AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-21 12:30:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add roundeven, roundevenf, roundevenl.

Browse Source 
TS 18661-1 defines roundeven functions that round a floating-point
number to the nearest integer, in that floating-point type, with ties
rounding to even (whereas the round functions round ties away from
zero).  As with other such functions, they raise no exceptions apart
from "invalid" for signaling NaNs.  There was a previous user request
for this functionality in glibc in
<https://sourceware.org/ml/libc-help/2015-02/msg00005.html>.

This patch implements these functions for glibc.  The implementations
use integer bit-manipulation (or roundeven on the high and low parts,
in the IBM long double case).  It's possible that there may be faster
approaches on some architectures (in particular, on AArch64 the frintn
instruction should do exactly what's required); I'll leave it to
architecture maintainers or others interested to implement such
architecture-specific versions if desired.  (Where architectures have
instructions to round to nearest integer in the current rounding mode,
implementations saving and restoring the rounding mode - and dealing
with exceptions if those instructions generate "inexact" - are also
possible, though their performance depends on the cost of manipulating
exceptions / rounding mode state.)

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(roundeven): New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (roundeven): New
	macro.
	* math/Versions (roundeven): New libm symbol at version
	GLIBC_2.25.
	(roundevenf): Likewise.
	(roundevenl): Likewise.
	* math/Makefile (libm-calls): Add s_roundevenF.
	* math/libm-test.inc (roundeven_test_data): New array.
	(roundeven_test): New function.
	(main): Call roundeven_test.
	* math/test-tgmath.c (NCALLS): Increase to 134.
	(F(compile_test)): Call roundeven.
	(F(roundeven)): New function.
	* manual/arith.texi (Rounding Functions): Document roundeven,
	roundevenf and roundevenl.
	* manual/libm-err-tab.pl (@all_functions): Add roundeven.
	* include/math.h (roundeven): Use libm_hidden_proto.
	* sysdeps/ieee754/dbl-64/s_roundeven.c: New file.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_roundeven.c: Likewise.
	* sysdeps/ieee754/flt-32/s_roundevenf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_roundevenl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_roundevenl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_roundevenl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	roundeven.
	(CFLAGS-nldbl-roundeven.c): New variable.
	* sysdeps/ieee754/ldbl-opt/nldbl-roundeven.c: New file.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
This commit is contained in:
Joseph Myers 2016-12-21 01:48:27 +00:00
parent 60c07b058f
commit 41c67149b9
46 changed files with 1360 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
ChangeLog
View File

@ -1,3 +1,68 @@
2016-12-21 Joseph Myers <joseph@codesourcery.com>
* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
(roundeven): New declaration.
* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (roundeven): New
macro.
* math/Versions (roundeven): New libm symbol at version
GLIBC_2.25.
(roundevenf): Likewise.
(roundevenl): Likewise.
* math/Makefile (libm-calls): Add s_roundevenF.
* math/libm-test.inc (roundeven_test_data): New array.
(roundeven_test): New function.
(main): Call roundeven_test.
* math/test-tgmath.c (NCALLS): Increase to 134.
(F(compile_test)): Call roundeven.
(F(roundeven)): New function.
* manual/arith.texi (Rounding Functions): Document roundeven,
roundevenf and roundevenl.
* manual/libm-err-tab.pl (@all_functions): Add roundeven.
* include/math.h (roundeven): Use libm_hidden_proto.
* sysdeps/ieee754/dbl-64/s_roundeven.c: New file.
* sysdeps/ieee754/dbl-64/wordsize-64/s_roundeven.c: Likewise.
* sysdeps/ieee754/flt-32/s_roundevenf.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_roundevenl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_roundevenl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_roundevenl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
roundeven.
(CFLAGS-nldbl-roundeven.c): New variable.
* sysdeps/ieee754/ldbl-opt/nldbl-roundeven.c: New file.
* sysdeps/nacl/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2016-12-20 Joseph Myers <joseph@codesourcery.com>
* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb): Add

2
NEWS
View File

@ -66,6 +66,8 @@ Version 2.25
- Signaling NaN macros: SNANF, SNAN, SNANL.
- Nearest integer functions: roundeven, roundevenf, roundevenl.
- llogb functions: the llogb, llogbf and llogbl functions, and the
FP_LLOGB0 and FP_LLOGBNAN macros.

1
include/math.h
View File

@ -29,6 +29,7 @@ libm_hidden_proto (__issignaling)
libm_hidden_proto (__issignalingf)
libm_hidden_proto (__exp)
libm_hidden_proto (__expf)
libm_hidden_proto (roundeven)
# ifndef __NO_LONG_DOUBLE_MATH
libm_hidden_proto (__fpclassifyl)

14
manual/arith.texi
View File

@ -1594,6 +1594,20 @@ cases away from zero instead of to the nearest integer (or other
current rounding mode).
@end deftypefun
@comment math.h
@comment ISO
@deftypefun double roundeven (double @var{x})
@comment math.h
@comment ISO
@deftypefunx float roundevenf (float @var{x})
@comment math.h
@comment ISO
@deftypefunx {long double} roundevenl (long double @var{x})
@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
These functions, from TS 18661-1:2014, are similar to @code{round},
but they round halfway cases to even instead of away from zero.
@end deftypefun
@comment math.h
@comment ISO
@deftypefun {long int} lrint (double @var{x})

6
manual/libm-err-tab.pl
View File

@ -61,9 +61,9 @@ use vars qw (%results @all_floats %suffices @all_functions);
"ilogb", "j0", "j1", "jn", "lgamma", "llogb", "lrint",
"llrint", "log", "log10", "log1p", "log2", "logb", "lround",
"llround", "modf", "nearbyint", "nextafter", "nextdown", "nexttoward",
"nextup", "pow", "remainder", "remquo", "rint", "round", "scalb",
"scalbn", "sin", "sincos", "sinh", "sqrt", "tan", "tanh", "tgamma",
"trunc", "y0", "y1", "yn" );
"nextup", "pow", "remainder", "remquo", "rint", "round", "roundeven",
"scalb", "scalbn", "sin", "sincos", "sinh", "sqrt", "tan", "tanh",
"tgamma", "trunc", "y0", "y1", "yn" );
# canonicalize, fpclassify, getpayload, iscanonical, isnormal,
# isfinite, isinf, isnan, issignaling, issubnormal, iszero, signbit,
# iseqsig, isgreater, isgreaterequal, isless, islessequal,

2
math/Makefile
View File

@ -75,7 +75,7 @@ libm-calls = \
s_issignalingF $(calls:s_%=m_%) x2y2m1F \
gamma_productF lgamma_negF lgamma_productF \
s_nextupF s_totalorderF s_totalordermagF s_getpayloadF \
s_setpayloadF s_setpayloadsigF $(gen-libm-calls)
s_setpayloadF s_setpayloadsigF s_roundevenF $(gen-libm-calls)
libm-compat-calls-ldouble-yes = w_lgamma_compatl k_standardl
libm-compat-calls = w_lgamma_compatf w_lgamma_compat k_standard k_standardf \

1
math/Versions
View File

@ -225,5 +225,6 @@ libm {
setpayloadsig; setpayloadsigf; setpayloadsigl;
llogb; llogbf; llogbl;
fmaxmag; fmaxmagf; fmaxmagl; fminmag; fminmagf; fminmagl;
roundeven; roundevenf; roundevenl;
}
}

3
math/bits/mathcalls.h
View File

@ -385,6 +385,9 @@ __END_NAMESPACE_C99
#endif
#if __GLIBC_USE (IEC_60559_BFP_EXT)
/* Round X to nearest integer value, rounding halfway cases to even. */
__MATHCALLX (roundeven,, (_Mdouble_ __x), (__const__));
/* Return value with maximum magnitude. */
__MATHCALLX (fmaxmag,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));

606
math/libm-test.inc
View File

@ -47,7 +47,7 @@
ldexp, lgamma, llogb, log, log10, log1p, log2, logb,
modf, nearbyint, nextafter, nexttoward,
pow, pow10, remainder, remquo, rint, lrint, llrint,
round, lround, llround,
round, roundeven, lround, llround,
scalb, scalbn, scalbln, setpayload, setpayloadsig, signbit,
sin, sincos, sinh, sqrt,
tan, tanh, tgamma, totalorder, totalordermag, trunc,
@ -12460,6 +12460,609 @@ round_test (void)
}
static const struct test_f_f_data roundeven_test_data[] =
{
TEST_f_f (roundeven, plus_zero, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_f_f (roundeven, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_f_f (roundeven, min_subnorm_value, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, min_value, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 1, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 2, 2, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 3, 3, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 4, 4, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 5, 5, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p23, 0x1p23, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p24, 0x1p24, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p25, 0x1p25, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p52, 0x1p52, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p53, 0x1p53, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p54, 0x1p54, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p63, 0x1p63, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p64, 0x1p64, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p65, 0x1p65, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p105, 0x1p105, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p106, 0x1p106, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p107, 0x1p107, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p112, 0x1p112, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p113, 0x1p113, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1p114, 0x1p114, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -min_subnorm_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -min_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -1, -1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -2, -2, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -3, -3, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -4, -4, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -5, -5, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p23, -0x1p23, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p24, -0x1p24, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p25, -0x1p25, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p52, -0x1p52, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p53, -0x1p53, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p54, -0x1p54, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p63, -0x1p63, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p64, -0x1p64, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p65, -0x1p65, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p105, -0x1p105, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p106, -0x1p106, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p107, -0x1p107, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p112, -0x1p112, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p113, -0x1p113, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1p114, -0x1p114, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -max_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.1, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.2, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.2, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.25, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.25, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.499, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.499, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.5, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.5, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.501, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.501, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.625, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.625, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.75, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.75, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0.8, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0.8, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 1.25, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -1.25, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 1.499, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -1.499, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 1.5, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -1.5, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 1.501, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -1.501, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 1.75, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -1.75, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 2.25, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -2.25, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 2.499, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -2.499, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 2.5, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -2.5, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 2.501, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -2.501, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 2.75, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -2.75, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 3.25, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -3.25, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 3.499, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -3.499, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 3.5, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -3.5, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 3.501, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -3.501, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 3.75, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -3.75, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 4.25, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -4.25, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 4.499, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -4.499, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 4.5, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -4.5, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 4.501, 5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -4.501, -5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 4.75, 5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -4.75, -5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 5.25, 5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -5.25, -5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 5.499, 5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -5.499, -5.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 5.5, 6.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -5.5, -6.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 5.501, 6.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -5.501, -6.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 5.75, 6.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -5.75, -6.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
/* 0.5, 1.5, 2.5, 3.5 +/- 1ulp. */
TEST_f_f (roundeven, 0x0.ffffffp-1, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x0.ffffffp-1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1.000002p-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1.000002p-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2.fffffcp-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2.fffffcp-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3.000004p-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3.000004p-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4.fffff8p-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4.fffff8p-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x5.000008p-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x5.000008p-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x6.fffff8p-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x6.fffff8p-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7.000008p-1, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7.000008p-1, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#if MANT_DIG >= 53
TEST_f_f (roundeven, 0x0.fffffffffffff8p-1, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x0.fffffffffffff8p-1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1.0000000000001p-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1.0000000000001p-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2.ffffffffffffep-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2.ffffffffffffep-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3.0000000000002p-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3.0000000000002p-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4.ffffffffffffcp-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4.ffffffffffffcp-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x5.0000000000004p-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x5.0000000000004p-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x6.ffffffffffffcp-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x6.ffffffffffffcp-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7.0000000000004p-1, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7.0000000000004p-1, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 64
TEST_f_f (roundeven, 0x0.ffffffffffffffffp-1, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x0.ffffffffffffffffp-1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1.0000000000000002p-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1.0000000000000002p-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2.fffffffffffffffcp-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2.fffffffffffffffcp-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3.0000000000000004p-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3.0000000000000004p-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4.fffffffffffffff8p-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4.fffffffffffffff8p-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x5.0000000000000008p-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x5.0000000000000008p-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x6.fffffffffffffff8p-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x6.fffffffffffffff8p-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7.0000000000000008p-1, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7.0000000000000008p-1, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 106
TEST_f_f (roundeven, 0x0.ffffffffffffffffffffffffffcp-1, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x0.ffffffffffffffffffffffffffcp-1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1.000000000000000000000000008p-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1.000000000000000000000000008p-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2.ffffffffffffffffffffffffffp-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2.ffffffffffffffffffffffffffp-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3.00000000000000000000000001p-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3.00000000000000000000000001p-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4.fffffffffffffffffffffffffep-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4.fffffffffffffffffffffffffep-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x5.00000000000000000000000002p-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x5.00000000000000000000000002p-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x6.fffffffffffffffffffffffffep-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x6.fffffffffffffffffffffffffep-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7.00000000000000000000000002p-1, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7.00000000000000000000000002p-1, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 113
TEST_f_f (roundeven, 0x0.ffffffffffffffffffffffffffff8p-1, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x0.ffffffffffffffffffffffffffff8p-1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1.0000000000000000000000000001p-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1.0000000000000000000000000001p-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2.fffffffffffffffffffffffffffep-1, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2.fffffffffffffffffffffffffffep-1, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3.0000000000000000000000000002p-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3.0000000000000000000000000002p-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4.fffffffffffffffffffffffffffcp-1, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4.fffffffffffffffffffffffffffcp-1, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x5.0000000000000000000000000004p-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x5.0000000000000000000000000004p-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x6.fffffffffffffffffffffffffffcp-1, 3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x6.fffffffffffffffffffffffffffcp-1, -3.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7.0000000000000000000000000004p-1, 4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7.0000000000000000000000000004p-1, -4.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
/* 31, 32, 33 fractional bits. */
#if MANT_DIG >= 53
TEST_f_f (roundeven, 0x200000.7ffffffep0, 0x200000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000.7ffffffep0, -0x200000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000.8p0, 0x200000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000.8p0, -0x200000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000.80000002p0, 0x200001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000.80000002p0, -0x200001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200001.7ffffffep0, 0x200001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200001.7ffffffep0, -0x200001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200001.8p0, 0x200002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200001.8p0, -0x200002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200001.80000002p0, 0x200002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200001.80000002p0, -0x200002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3fffff.fffffffep0, 0x400000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3fffff.fffffffep0, -0x400000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000.7fffffffp0, 0x100000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000.7fffffffp0, -0x100000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000.8p0, 0x100000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000.8p0, -0x100000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000.80000001p0, 0x100001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000.80000001p0, -0x100001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100001.7fffffffp0, 0x100001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100001.7fffffffp0, -0x100001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100001.8p0, 0x100002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100001.8p0, -0x100002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100001.80000001p0, 0x100002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100001.80000001p0, -0x100002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1fffff.ffffffffp0, 0x200000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1fffff.ffffffffp0, -0x200000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000.7fffffff8p0, 0x80000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000.7fffffff8p0, -0x80000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000.8p0, 0x80000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000.8p0, -0x80000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000.800000008p0, 0x80001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000.800000008p0, -0x80001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80001.7fffffff8p0, 0x80001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80001.7fffffff8p0, -0x80001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80001.8p0, 0x80002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80001.8p0, -0x80002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80001.800000008p0, 0x80002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80001.800000008p0, -0x80002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0xfffff.ffffffff8p0, 0x100000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0xfffff.ffffffff8p0, -0x100000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 64
TEST_f_f (roundeven, 0x100000000.7ffffffep0, 0x100000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000.7ffffffep0, -0x100000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000.8p0, 0x100000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000.8p0, -0x100000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000.80000002p0, 0x100000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000.80000002p0, -0x100000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000001.7ffffffep0, 0x100000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000001.7ffffffep0, -0x100000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000001.8p0, 0x100000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000001.8p0, -0x100000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000001.80000002p0, 0x100000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000001.80000002p0, -0x100000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1ffffffff.fffffffep0, 0x200000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1ffffffff.fffffffep0, -0x200000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000.7fffffffp0, 0x80000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000.7fffffffp0, -0x80000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000.8p0, 0x80000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000.8p0, -0x80000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000.80000001p0, 0x80000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000.80000001p0, -0x80000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000001.7fffffffp0, 0x80000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000001.7fffffffp0, -0x80000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000001.8p0, 0x80000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000001.8p0, -0x80000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000001.80000001p0, 0x80000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000001.80000001p0, -0x80000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0xffffffff.ffffffffp0, 0x100000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0xffffffff.ffffffffp0, -0x100000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000.7fffffff8p0, 0x40000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000.7fffffff8p0, -0x40000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000.8p0, 0x40000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000.8p0, -0x40000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000.800000008p0, 0x40000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000.800000008p0, -0x40000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000001.7fffffff8p0, 0x40000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000001.7fffffff8p0, -0x40000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000001.8p0, 0x40000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000001.8p0, -0x40000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000001.800000008p0, 0x40000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000001.800000008p0, -0x40000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7fffffff.ffffffff8p0, 0x80000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7fffffff.ffffffff8p0, -0x80000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 106
TEST_f_f (roundeven, 0x4000000000000000000.7ffffffep0, 0x4000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4000000000000000000.7ffffffep0, -0x4000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4000000000000000000.8p0, 0x4000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4000000000000000000.8p0, -0x4000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4000000000000000000.80000002p0, 0x4000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4000000000000000000.80000002p0, -0x4000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4000000000000000001.7ffffffep0, 0x4000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4000000000000000001.7ffffffep0, -0x4000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4000000000000000001.8p0, 0x4000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4000000000000000001.8p0, -0x4000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x4000000000000000001.80000002p0, 0x4000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x4000000000000000001.80000002p0, -0x4000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7ffffffffffffffffff.fffffffep0, 0x8000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7ffffffffffffffffff.fffffffep0, -0x8000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000000000.7fffffffp0, 0x2000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000000000.7fffffffp0, -0x2000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000000000.8p0, 0x2000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000000000.8p0, -0x2000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000000000.80000001p0, 0x2000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000000000.80000001p0, -0x2000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000000001.7fffffffp0, 0x2000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000000001.7fffffffp0, -0x2000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000000001.8p0, 0x2000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000000001.8p0, -0x2000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000000001.80000001p0, 0x2000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000000001.80000001p0, -0x2000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3ffffffffffffffffff.ffffffffp0, 0x4000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3ffffffffffffffffff.ffffffffp0, -0x4000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000000000.7fffffff8p0, 0x1000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000000000.7fffffff8p0, -0x1000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000000000.8p0, 0x1000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000000000.8p0, -0x1000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000000000.800000008p0, 0x1000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000000000.800000008p0, -0x1000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000000001.7fffffff8p0, 0x1000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000000001.7fffffff8p0, -0x1000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000000001.8p0, 0x1000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000000001.8p0, -0x1000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000000001.800000008p0, 0x1000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000000001.800000008p0, -0x1000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1ffffffffffffffffff.ffffffff8p0, 0x2000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1ffffffffffffffffff.ffffffff8p0, -0x2000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 113
TEST_f_f (roundeven, 0x200000000000000000000.7ffffffep0, 0x200000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000.7ffffffep0, -0x200000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000.8p0, 0x200000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000.8p0, -0x200000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000.80000002p0, 0x200000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000.80000002p0, -0x200000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000001.7ffffffep0, 0x200000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000001.7ffffffep0, -0x200000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000001.8p0, 0x200000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000001.8p0, -0x200000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000001.80000002p0, 0x200000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000001.80000002p0, -0x200000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3ffffffffffffffffffff.fffffffep0, 0x400000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3ffffffffffffffffffff.fffffffep0, -0x400000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000000000000000.7fffffffp0, 0x100000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000000000000000.7fffffffp0, -0x100000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000000000000000.8p0, 0x100000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000000000000000.8p0, -0x100000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000000000000000.80000001p0, 0x100000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000000000000000.80000001p0, -0x100000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000000000000001.7fffffffp0, 0x100000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000000000000001.7fffffffp0, -0x100000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000000000000001.8p0, 0x100000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000000000000001.8p0, -0x100000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x100000000000000000001.80000001p0, 0x100000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x100000000000000000001.80000001p0, -0x100000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1ffffffffffffffffffff.ffffffffp0, 0x200000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1ffffffffffffffffffff.ffffffffp0, -0x200000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000000000000000.7fffffff8p0, 0x80000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000000000000000.7fffffff8p0, -0x80000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000000000000000.8p0, 0x80000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000000000000000.8p0, -0x80000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000000000000000.800000008p0, 0x80000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000000000000000.800000008p0, -0x80000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000000000000001.7fffffff8p0, 0x80000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000000000000001.7fffffff8p0, -0x80000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000000000000001.8p0, 0x80000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000000000000001.8p0, -0x80000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x80000000000000000001.800000008p0, 0x80000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x80000000000000000001.800000008p0, -0x80000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0xffffffffffffffffffff.ffffffff8p0, 0x100000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0xffffffffffffffffffff.ffffffff8p0, -0x100000000000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
/* 63, 64, 65 fractional bits. */
#if MANT_DIG >= 106
TEST_f_f (roundeven, 0x40000000000.7ffffffffffffffep0, 0x40000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000000.7ffffffffffffffep0, -0x40000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000000.8p0, 0x40000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000000.8p0, -0x40000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000000.8000000000000002p0, 0x40000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000000.8000000000000002p0, -0x40000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000001.7ffffffffffffffep0, 0x40000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000001.7ffffffffffffffep0, -0x40000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000001.8p0, 0x40000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000001.8p0, -0x40000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x40000000001.8000000000000002p0, 0x40000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x40000000001.8000000000000002p0, -0x40000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x7ffffffffff.fffffffffffffffep0, 0x80000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x7ffffffffff.fffffffffffffffep0, -0x80000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x20000000000.7fffffffffffffffp0, 0x20000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x20000000000.7fffffffffffffffp0, -0x20000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x20000000000.8p0, 0x20000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x20000000000.8p0, -0x20000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x20000000000.8000000000000001p0, 0x20000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x20000000000.8000000000000001p0, -0x20000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x20000000001.7fffffffffffffffp0, 0x20000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x20000000001.7fffffffffffffffp0, -0x20000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x20000000001.8p0, 0x20000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x20000000001.8p0, -0x20000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x20000000001.8000000000000001p0, 0x20000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x20000000001.8000000000000001p0, -0x20000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3ffffffffff.ffffffffffffffffp0, 0x40000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3ffffffffff.ffffffffffffffffp0, -0x40000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000.7fffffffffffffff8p0, 0x10000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000.7fffffffffffffff8p0, -0x10000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000.8p0, 0x10000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000.8p0, -0x10000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000.80000000000000008p0, 0x10000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000.80000000000000008p0, -0x10000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000001.7fffffffffffffff8p0, 0x10000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000001.7fffffffffffffff8p0, -0x10000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000001.8p0, 0x10000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000001.8p0, -0x10000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000001.80000000000000008p0, 0x10000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000001.80000000000000008p0, -0x10000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1ffffffffff.ffffffffffffffff8p0, 0x20000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1ffffffffff.ffffffffffffffff8p0, -0x20000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 113
TEST_f_f (roundeven, 0x2000000000000.7ffffffffffffffep0, 0x2000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000.7ffffffffffffffep0, -0x2000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000.8p0, 0x2000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000.8p0, -0x2000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000000.8000000000000002p0, 0x2000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000000.8000000000000002p0, -0x2000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000001.7ffffffffffffffep0, 0x2000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000001.7ffffffffffffffep0, -0x2000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000001.8p0, 0x2000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000001.8p0, -0x2000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x2000000000001.8000000000000002p0, 0x2000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x2000000000001.8000000000000002p0, -0x2000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3ffffffffffff.fffffffffffffffep0, 0x4000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3ffffffffffff.fffffffffffffffep0, -0x4000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000.7fffffffffffffffp0, 0x1000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000.7fffffffffffffffp0, -0x1000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000.8p0, 0x1000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000.8p0, -0x1000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000000.8000000000000001p0, 0x1000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000000.8000000000000001p0, -0x1000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000001.7fffffffffffffffp0, 0x1000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000001.7fffffffffffffffp0, -0x1000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000001.8p0, 0x1000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000001.8p0, -0x1000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1000000000001.8000000000000001p0, 0x1000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1000000000001.8000000000000001p0, -0x1000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1ffffffffffff.ffffffffffffffffp0, 0x2000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1ffffffffffff.ffffffffffffffffp0, -0x2000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800000000000.7fffffffffffffff8p0, 0x800000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800000000000.7fffffffffffffff8p0, -0x800000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800000000000.8p0, 0x800000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800000000000.8p0, -0x800000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800000000000.80000000000000008p0, 0x800000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800000000000.80000000000000008p0, -0x800000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800000000001.7fffffffffffffff8p0, 0x800000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800000000001.7fffffffffffffff8p0, -0x800000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800000000001.8p0, 0x800000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800000000001.8p0, -0x800000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800000000001.80000000000000008p0, 0x800000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800000000001.80000000000000008p0, -0x800000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0xffffffffffff.ffffffffffffffff8p0, 0x1000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0xffffffffffff.ffffffffffffffff8p0, -0x1000000000000p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
/* Maximum exponent for noninteger values. */
TEST_f_f (roundeven, 0x800001p-1, 0x800000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800001p-1, -0x800000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800002p-1, 0x800002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800002p-1, -0x800002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800003p-1, 0x800004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800003p-1, -0x800004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800004p-1, 0x800004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800004p-1, -0x800004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800005p-1, 0x800004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800005p-1, -0x800004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0xffffffp-1, 0x1000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0xffffffp-1, -0x1000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#if MANT_DIG >= 53
TEST_f_f (roundeven, 0x10000000000001p-1, 0x10000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000001p-1, -0x10000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000002p-1, 0x10000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000002p-1, -0x10000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000003p-1, 0x10000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000003p-1, -0x10000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000004p-1, 0x10000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000004p-1, -0x10000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000005p-1, 0x10000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000005p-1, -0x10000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1fffffffffffffp-1, 0x20000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1fffffffffffffp-1, -0x20000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 64
TEST_f_f (roundeven, 0x8000000000000001p-1, 0x8000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000001p-1, -0x8000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x8000000000000002p-1, 0x8000000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000002p-1, -0x8000000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x8000000000000003p-1, 0x8000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000003p-1, -0x8000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x8000000000000004p-1, 0x8000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000004p-1, -0x8000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x8000000000000005p-1, 0x8000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000005p-1, -0x8000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0xffffffffffffffffp-1, 0x10000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0xffffffffffffffffp-1, -0x10000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 106
TEST_f_f (roundeven, 0x200000000000000000000000001p-1, 0x200000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000001p-1, -0x200000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000000002p-1, 0x200000000000000000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000002p-1, -0x200000000000000000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000000003p-1, 0x200000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000003p-1, -0x200000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000000004p-1, 0x200000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000004p-1, -0x200000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000000005p-1, 0x200000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000005p-1, -0x200000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x3ffffffffffffffffffffffffffp-1, 0x400000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x3ffffffffffffffffffffffffffp-1, -0x400000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 113
TEST_f_f (roundeven, 0x10000000000000000000000000001p-1, 0x10000000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000001p-1, -0x10000000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000000000000000000002p-1, 0x10000000000000000000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000002p-1, -0x10000000000000000000000000002p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000000000000000000003p-1, 0x10000000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000003p-1, -0x10000000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000000000000000000004p-1, 0x10000000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000004p-1, -0x10000000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000000000000000000005p-1, 0x10000000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000005p-1, -0x10000000000000000000000000004p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x1ffffffffffffffffffffffffffffp-1, 0x20000000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x1ffffffffffffffffffffffffffffp-1, -0x20000000000000000000000000000p-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
/* Minimum exponent forcing integer values. */
TEST_f_f (roundeven, 0x800001p0, 0x800001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800001p0, -0x800001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800002p0, 0x800002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800002p0, -0x800002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x800003p0, 0x800003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x800003p0, -0x800003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#if MANT_DIG >= 53
TEST_f_f (roundeven, 0x10000000000001p0, 0x10000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000001p0, -0x10000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000002p0, 0x10000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000002p0, -0x10000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000003p0, 0x10000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000003p0, -0x10000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 64
TEST_f_f (roundeven, 0x8000000000000001p0, 0x8000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000001p0, -0x8000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x8000000000000002p0, 0x8000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000002p0, -0x8000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x8000000000000003p0, 0x8000000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x8000000000000003p0, -0x8000000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 106
TEST_f_f (roundeven, 0x200000000000000000000000001p0, 0x200000000000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000001p0, -0x200000000000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000000002p0, 0x200000000000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000002p0, -0x200000000000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x200000000000000000000000003p0, 0x200000000000000000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x200000000000000000000000003p0, -0x200000000000000000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
#if MANT_DIG >= 113
TEST_f_f (roundeven, 0x10000000000000000000000000001p0, 0x10000000000000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000001p0, -0x10000000000000000000000000001p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000000000000000000002p0, 0x10000000000000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000002p0, -0x10000000000000000000000000002p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, 0x10000000000000000000000000003p0, 0x10000000000000000000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (roundeven, -0x10000000000000000000000000003p0, -0x10000000000000000000000000003p0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
};
static void
roundeven_test (void)
{
ALL_RM_TEST (roundeven, 1, roundeven_test_data, RUN_TEST_LOOP_f_f, END);
}
static const struct test_ff_f_data scalb_test_data[] =
{
/* Results in this case are unspecified by POSIX, so, for an
@ -14266,6 +14869,7 @@ main (int argc, char **argv)
lrint_test ();
llrint_test ();
round_test ();
roundeven_test ();
lround_test ();
llround_test ();
trunc_test ();

12
math/test-tgmath.c
View File

@ -50,7 +50,7 @@ int count_cdouble;
int count_cfloat;
int count_cldouble;
#define NCALLS 132
#define NCALLS 134
#define NCALLS_INT 4
#define NCCALLS 47
@ -264,6 +264,7 @@ F(compile_test) (void)
b = fmod (fmod (a, b), fmod (c, x));
a = nearbyint (nearbyint (x));
b = round (round (a));
c = roundeven (roundeven (a));
a = trunc (trunc (x));
b = remquo (remquo (a, b, &i), remquo (c, x, &i), &i);
j = lrint (x) + lround (a);
@ -367,6 +368,7 @@ F(compile_test) (void)
a = fmod (y, y);
a = nearbyint (y);
a = round (y);
a = roundeven (y);
a = trunc (y);
a = remquo (y, y, &i);
j = lrint (y) + lround (y);
@ -692,6 +694,14 @@ TYPE
return x;
}
TYPE
(F(roundeven)) (TYPE x)
{
++count;
P ();
return x;
}
TYPE
(F(trunc)) (TYPE x)
{

3
math/tgmath.h
View File

@ -438,6 +438,9 @@
__TGMATH_TERNARY_REAL_ONLY (Val1, Val2, Val3, fma)
#if __GLIBC_USE (IEC_60559_BFP_EXT)
/* Round X to nearest integer value, rounding halfway cases to even. */
# define roundeven(Val) __TGMATH_UNARY_REAL_ONLY (Val, roundeven)
/* Like ilogb, but returning long int. */
# define llogb(Val) __TGMATH_UNARY_REAL_RET_ONLY (Val, long int, llogb)

106
sysdeps/ieee754/dbl-64/s_roundeven.c Normal file
View File

@ -0,0 +1,106 @@
/* Round to nearest integer value, rounding halfway cases to even.
dbl-64 version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
#include <stdint.h>
#define BIAS 0x3ff
#define MANT_DIG 53
#define MAX_EXP (2 * BIAS + 1)
double
roundeven (double x)
{
uint32_t hx, lx, uhx;
EXTRACT_WORDS (hx, lx, x);
uhx = hx & 0x7fffffff;
int exponent = uhx >> (MANT_DIG - 1 - 32);
if (exponent >= BIAS + MANT_DIG - 1)
{
/* Integer, infinity or NaN. */
if (exponent == MAX_EXP)
/* Infinity or NaN; quiet signaling NaNs. */
return x + x;
else
return x;
}
else if (exponent >= BIAS + MANT_DIG - 32)
{
/* Not necessarily an integer; integer bit is in low word.
Locate the bits with exponents 0 and -1. */
int int_pos = (BIAS + MANT_DIG - 1) - exponent;
int half_pos = int_pos - 1;
uint32_t half_bit = 1U << half_pos;
uint32_t int_bit = 1U << int_pos;
if ((lx & (int_bit | (half_bit - 1))) != 0)
{
/* Carry into the exponent works correctly. No need to test
whether HALF_BIT is set. */
lx += half_bit;
hx += lx < half_bit;
}
lx &= ~(int_bit - 1);
}
else if (exponent == BIAS + MANT_DIG - 33)
{
/* Not necessarily an integer; integer bit is bottom of high
word, half bit is top of low word. */
if (((hx & 1) | (lx & 0x7fffffff)) != 0)
{
lx += 0x80000000;
hx += lx < 0x80000000;
}
lx = 0;
}
else if (exponent >= BIAS)
{
/* At least 1; not necessarily an integer, integer bit and half
bit are in the high word. Locate the bits with exponents 0
and -1 (when the unbiased exponent is 0, the bit with
exponent 0 is implicit, but as the bias is odd it is OK to
take it from the low bit of the exponent). */
int int_pos = (BIAS + MANT_DIG - 33) - exponent;
int half_pos = int_pos - 1;
uint32_t half_bit = 1U << half_pos;
uint32_t int_bit = 1U << int_pos;
if (((hx & (int_bit | (half_bit - 1))) | lx) != 0)
hx += half_bit;
hx &= ~(int_bit - 1);
lx = 0;
}
else if (exponent == BIAS - 1 && (uhx > 0x3fe00000 || lx != 0))
{
/* Interval (0.5, 1). */
hx = (hx & 0x80000000) | 0x3ff00000;
lx = 0;
}
else
{
/* Rounds to 0. */
hx &= 0x80000000;
lx = 0;
}
INSERT_WORDS (x, hx, lx);
return x;
}
hidden_def (roundeven)
#ifdef NO_LONG_DOUBLE
weak_alias (roundeven, roundevenl)
#endif

72
sysdeps/ieee754/dbl-64/wordsize-64/s_roundeven.c Normal file
View File

@ -0,0 +1,72 @@
/* Round to nearest integer value, rounding halfway cases to even.
dbl-64/wordsize-64 version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
#include <stdint.h>
#define BIAS 0x3ff
#define MANT_DIG 53
#define MAX_EXP (2 * BIAS + 1)
double
roundeven (double x)
{
uint64_t ix, ux;
EXTRACT_WORDS64 (ix, x);
ux = ix & 0x7fffffffffffffffULL;
int exponent = ux >> (MANT_DIG - 1);
if (exponent >= BIAS + MANT_DIG - 1)
{
/* Integer, infinity or NaN. */
if (exponent == MAX_EXP)
/* Infinity or NaN; quiet signaling NaNs. */
return x + x;
else
return x;
}
else if (exponent >= BIAS)
{
/* At least 1; not necessarily an integer. Locate the bits with
exponents 0 and -1 (when the unbiased exponent is 0, the bit
with exponent 0 is implicit, but as the bias is odd it is OK
to take it from the low bit of the exponent). */
int int_pos = (BIAS + MANT_DIG - 1) - exponent;
int half_pos = int_pos - 1;
uint64_t half_bit = 1ULL << half_pos;
uint64_t int_bit = 1ULL << int_pos;
if ((ix & (int_bit | (half_bit - 1))) != 0)
/* Carry into the exponent works correctly. No need to test
whether HALF_BIT is set. */
ix += half_bit;
ix &= ~(int_bit - 1);
}
else if (exponent == BIAS - 1 && ux > 0x3fe0000000000000ULL)
/* Interval (0.5, 1). */
ix = (ix & 0x8000000000000000ULL) | 0x3ff0000000000000ULL;
else
/* Rounds to 0. */
ix &= 0x8000000000000000ULL;
INSERT_WORDS64 (x, ix);
return x;
}
hidden_def (roundeven)
#ifdef NO_LONG_DOUBLE
weak_alias (roundeven, roundevenl)
#endif

68
sysdeps/ieee754/flt-32/s_roundevenf.c Normal file
View File

@ -0,0 +1,68 @@
/* Round to nearest integer value, rounding halfway cases to even.
flt-32 version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
#include <stdint.h>
#define BIAS 0x7f
#define MANT_DIG 24
#define MAX_EXP (2 * BIAS + 1)
float
roundevenf (float x)
{
uint32_t ix, ux;
GET_FLOAT_WORD (ix, x);
ux = ix & 0x7fffffff;
int exponent = ux >> (MANT_DIG - 1);
if (exponent >= BIAS + MANT_DIG - 1)
{
/* Integer, infinity or NaN. */
if (exponent == MAX_EXP)
/* Infinity or NaN; quiet signaling NaNs. */
return x + x;
else
return x;
}
else if (exponent >= BIAS)
{
/* At least 1; not necessarily an integer. Locate the bits with
exponents 0 and -1 (when the unbiased exponent is 0, the bit
with exponent 0 is implicit, but as the bias is odd it is OK
to take it from the low bit of the exponent). */
int int_pos = (BIAS + MANT_DIG - 1) - exponent;
int half_pos = int_pos - 1;
uint32_t half_bit = 1U << half_pos;
uint32_t int_bit = 1U << int_pos;
if ((ix & (int_bit | (half_bit - 1))) != 0)
/* Carry into the exponent works correctly. No need to test
whether HALF_BIT is set. */
ix += half_bit;
ix &= ~(int_bit - 1);
}
else if (exponent == BIAS - 1 && ux > 0x3f000000)
/* Interval (0.5, 1). */
ix = (ix & 0x80000000) | 0x3f800000;
else
/* Rounds to 0. */
ix &= 0x80000000;
SET_FLOAT_WORD (x, ix);
return x;
}

102
sysdeps/ieee754/ldbl-128/s_roundevenl.c Normal file
View File

@ -0,0 +1,102 @@
/* Round to nearest integer value, rounding halfway cases to even.
ldbl-128 version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
#include <stdint.h>
#define BIAS 0x3fff
#define MANT_DIG 113
#define MAX_EXP (2 * BIAS + 1)
_Float128
roundevenl (_Float128 x)
{
uint64_t hx, lx, uhx;
GET_LDOUBLE_WORDS64 (hx, lx, x);
uhx = hx & 0x7fffffffffffffffULL;
int exponent = uhx >> (MANT_DIG - 1 - 64);
if (exponent >= BIAS + MANT_DIG - 1)
{
/* Integer, infinity or NaN. */
if (exponent == MAX_EXP)
/* Infinity or NaN; quiet signaling NaNs. */
return x + x;
else
return x;
}
else if (exponent >= BIAS + MANT_DIG - 64)
{
/* Not necessarily an integer; integer bit is in low word.
Locate the bits with exponents 0 and -1. */
int int_pos = (BIAS + MANT_DIG - 1) - exponent;
int half_pos = int_pos - 1;
uint64_t half_bit = 1ULL << half_pos;
uint64_t int_bit = 1ULL << int_pos;
if ((lx & (int_bit | (half_bit - 1))) != 0)
{
/* Carry into the exponent works correctly. No need to test
whether HALF_BIT is set. */
lx += half_bit;
hx += lx < half_bit;
}
lx &= ~(int_bit - 1);
}
else if (exponent == BIAS + MANT_DIG - 65)
{
/* Not necessarily an integer; integer bit is bottom of high
word, half bit is top of low word. */
if (((hx & 1) | (lx & 0x7fffffffffffffffULL)) != 0)
{
lx += 0x8000000000000000ULL;
hx += lx < 0x8000000000000000ULL;
}
lx = 0;
}
else if (exponent >= BIAS)
{
/* At least 1; not necessarily an integer, integer bit and half
bit are in the high word. Locate the bits with exponents 0
and -1 (when the unbiased exponent is 0, the bit with
exponent 0 is implicit, but as the bias is odd it is OK to
take it from the low bit of the exponent). */
int int_pos = (BIAS + MANT_DIG - 65) - exponent;
int half_pos = int_pos - 1;
uint64_t half_bit = 1ULL << half_pos;
uint64_t int_bit = 1ULL << int_pos;
if (((hx & (int_bit | (half_bit - 1))) | lx) != 0)
hx += half_bit;
hx &= ~(int_bit - 1);
lx = 0;
}
else if (exponent == BIAS - 1 && (uhx > 0x3ffe000000000000ULL || lx != 0))
{
/* Interval (0.5, 1). */
hx = (hx & 0x8000000000000000ULL) | 0x3fff000000000000ULL;
lx = 0;
}
else
{
/* Rounds to 0. */
hx &= 0x8000000000000000ULL;
lx = 0;
}
SET_LDOUBLE_WORDS64 (x, hx, lx);
return x;
}

69
sysdeps/ieee754/ldbl-128ibm/s_roundevenl.c Normal file
View File

@ -0,0 +1,69 @@
/* Round to nearest integer value, rounding halfway cases to even.
ldbl-128ibm version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
long double
roundevenl (long double x)
{
double xh, xl, hi;
ldbl_unpack (x, &xh, &xl);
if (xh != 0 && isfinite (xh))
{
hi = roundeven (xh);
if (hi != xh)
{
/* The high part is not an integer; the low part only
affects the result if the high part is exactly half way
between two integers and the low part is nonzero in the
opposite direction to the rounding of the high part. */
double diff = hi - xh;
if (fabs (diff) == 0.5)
{
if (xl < 0 && diff > 0)
xh = hi - 1;
else if (xl > 0 && diff < 0)
xh = hi + 1;
else
xh = hi;
}
else
xh = hi;
xl = 0;
}
else
{
/* The high part is a nonzero integer. Rounding the low
part to nearest, ties round to even, is always correct,
as a high part that is an odd integer together with a low
part with magnitude 0.5 is not a valid long double. */
xl = roundeven (xl);
xh = hi;
ldbl_canonicalize_int (&xh, &xl);
}
}
else
/* Quiet signaling NaN arguments. */
xh += xh;
return ldbl_pack (xh, xl);
}

124
sysdeps/ieee754/ldbl-96/s_roundevenl.c Normal file
View File

@ -0,0 +1,124 @@
/* Round to nearest integer value, rounding halfway cases to even.
ldbl-96 version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
#include <stdint.h>
#define BIAS 0x3fff
#define MANT_DIG 64
#define MAX_EXP (2 * BIAS + 1)
long double
roundevenl (long double x)
{
uint16_t se;
uint32_t hx, lx;
GET_LDOUBLE_WORDS (se, hx, lx, x);
int exponent = se & 0x7fff;
if (exponent >= BIAS + MANT_DIG - 1)
{
/* Integer, infinity or NaN. */
if (exponent == MAX_EXP)
/* Infinity or NaN; quiet signaling NaNs. */
return x + x;
else
return x;
}
else if (exponent >= BIAS + MANT_DIG - 32)
{
/* Not necessarily an integer; integer bit is in low word.
Locate the bits with exponents 0 and -1. */
int int_pos = (BIAS + MANT_DIG - 1) - exponent;
int half_pos = int_pos - 1;
uint32_t half_bit = 1U << half_pos;
uint32_t int_bit = 1U << int_pos;
if ((lx & (int_bit | (half_bit - 1))) != 0)
{
/* No need to test whether HALF_BIT is set. */
lx += half_bit;
if (lx < half_bit)
{
hx++;
if (hx == 0)
{
hx = 0x80000000;
se++;
}
}
}
lx &= ~(int_bit - 1);
}
else if (exponent == BIAS + MANT_DIG - 33)
{
/* Not necessarily an integer; integer bit is bottom of high
word, half bit is top of low word. */
if (((hx & 1) | (lx & 0x7fffffff)) != 0)
{
lx += 0x80000000;
if (lx < 0x80000000)
{
hx++;
if (hx == 0)
{
hx = 0x80000000;
se++;
}
}
}
lx = 0;
}
else if (exponent >= BIAS)
{
/* At least 1; not necessarily an integer, integer bit and half
bit are in the high word. Locate the bits with exponents 0
and -1. */
int int_pos = (BIAS + MANT_DIG - 33) - exponent;
int half_pos = int_pos - 1;
uint32_t half_bit = 1U << half_pos;
uint32_t int_bit = 1U << int_pos;
if (((hx & (int_bit | (half_bit - 1))) | lx) != 0)
{
hx += half_bit;
if (hx < half_bit)
{
hx = 0x80000000;
se++;
}
}
hx &= ~(int_bit - 1);
lx = 0;
}
else if (exponent == BIAS - 1 && (hx > 0x80000000 || lx != 0))
{
/* Interval (0.5, 1). */
se = (se & 0x8000) | 0x3fff;
hx = 0x80000000;
lx = 0;
}
else
{
/* Rounds to 0. */
se &= 0x8000;
hx = 0;
lx = 0;
}
SET_LDOUBLE_WORDS (x, se, hx, lx);
return x;
}

4
sysdeps/ieee754/ldbl-opt/Makefile
View File

@ -43,7 +43,8 @@ libnldbl-calls = asprintf dprintf fprintf fscanf fwprintf fwscanf iovfscanf \
isoc99_wscanf isoc99_fwscanf isoc99_swscanf \
isoc99_vwscanf isoc99_vfwscanf isoc99_vswscanf \
nextup nextdown totalorder totalordermag getpayload \
canonicalize setpayload setpayloadsig llogb fmaxmag fminmag
canonicalize setpayload setpayloadsig llogb fmaxmag fminmag \
roundeven
libnldbl-routines = $(libnldbl-calls:%=nldbl-%)
libnldbl-inhibit-o = $(object-suffixes)
libnldbl-static-only-routines = $(libnldbl-routines)
@ -138,6 +139,7 @@ CFLAGS-nldbl-remainder.c = -fno-builtin-remainderl -fno-builtin-dreml
CFLAGS-nldbl-remquo.c = -fno-builtin-remquol
CFLAGS-nldbl-rint.c = -fno-builtin-rintl
CFLAGS-nldbl-round.c = -fno-builtin-roundl
CFLAGS-nldbl-roundeven.c = -fno-builtin-roundevenl
CFLAGS-nldbl-scalb.c = -fno-builtin-scalbl
CFLAGS-nldbl-scalbln.c = -fno-builtin-scalblnl
CFLAGS-nldbl-scalbn.c = -fno-builtin-scalbnl

26
sysdeps/ieee754/ldbl-opt/nldbl-roundeven.c Normal file
View File

@ -0,0 +1,26 @@
/* Compatibility routine for IEEE double as long double for roundeven.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "nldbl-compat.h"
double
attribute_hidden
roundevenl (double x)
{
return roundeven (x);
}

3
sysdeps/nacl/libm.abilist
View File

@ -401,6 +401,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/aarch64/libm.abilist
View File

@ -433,6 +433,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/alpha/libm.abilist
View File

@ -443,6 +443,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/arm/libm.abilist
View File

@ -90,6 +90,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/hppa/libm.abilist
View File

@ -402,6 +402,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/i386/libm.abilist
View File

@ -446,6 +446,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/ia64/libm.abilist
View File

@ -375,6 +375,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
View File

@ -90,6 +90,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
View File

@ -444,6 +444,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/microblaze/libm.abilist
View File

@ -401,6 +401,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
View File

@ -403,6 +403,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
View File

@ -435,6 +435,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/nios2/libm.abilist
View File

@ -401,6 +401,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
View File

@ -446,6 +446,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
View File

@ -445,6 +445,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
View File

@ -440,6 +440,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
View File

@ -121,6 +121,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
View File

@ -433,6 +433,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
View File

@ -431,6 +431,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/sh/libm.abilist
View File

@ -402,6 +402,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
View File

@ -436,6 +436,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
View File

@ -434,6 +434,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist
View File

@ -402,6 +402,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist
View File

@ -402,6 +402,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist
View File

@ -402,6 +402,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
View File

@ -435,6 +435,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F

3
sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
View File

@ -434,6 +434,9 @@ GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 roundeven F
GLIBC_2.25 roundevenf F
GLIBC_2.25 roundevenl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F