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Add llogb, llogbf, llogbl.

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TS 18661-1 defines llogb functions that are like ilogb except that
they return long int instead of int.  Corresponding FP_LLOGB* macros
are defined, whose values are required to have the obvious
correspondence to those of the FP_ILOGB* macros.

This patch implements these functions and macros for glibc.  llogb
uses the type-generic infrastructure, with an implementation similar
to the wrapper for ilogb but with additional conversion from FP_ILOGB*
to FP_LLOGB*; this approach avoids needing to modify or duplicate any
of the architecture-specific ilogb implementations.  Tests are also
based on those for ilogb.

Ideally the llogb functions would alias the ilogb ones when long is
32-bit, but such aliasing requires the associated header declarations
of the different-type alias to be hidden, typically by defining macros
before including the header (see e.g. how
sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c defines lround to
__hidden_lround before including <math.h>).  The infrastructure for
type-generic function implementations does not support defining such
macros at present (since C code can't define a macro whose name is
determined by other macros).  So this patch leaves them as separate
functions (similar to e.g. scalbln and scalbn being separate in such a
case as well), but with the remapping of FP_ILOGB* to FP_LLOGB*
conditioned out in the case where it would be the identity map.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb):
	New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb): New
	macro.
	* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (__FP_LONG_MAX):
	New macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGB0): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGBNAN): Likewise.
	* math/Versions (llogb): New libm symbol at version GLIBC_2.25.
	(llogbf): Likewise.
	(llogbl): Likewise.
	* math/Makefile (gen-libm-calls): Add w_llogbF.
	(tests): Add test-fp-llogb-constants.
	* math/w_llogb_template.c: New file.  Based on
	math/w_ilogb_template.c.
	* math/libm-test.inc (llogb_test_data): New array.
	(llogb_test): New function.
	(main): Call llogb_test.
	* math/test-fp-llogb-constants.c: New file.  Based on
	math/test-fp-ilogb-constants.c.
	* math/test-tgmath-ret.c (llogb): New CHECK_RET_CONST call.
	(do_test): Call check_return_llogb.
	* math/test-tgmath.c (NCALLS): Increase to 126.
	(F(compile_test)): Call llogb.
	(F(llogb)): New function.
	* manual/math.texi (Exponents and Logarithms): Document llogb,
	llogbf, llogbl, FP_LLOGB0 and FP_LLOGBNAN.
	* manual/libm-err-tab.pl (@all_functions): Add llogb.
	* sysdeps/ieee754/ldbl-opt/nldbl-llogb.c: New file.
	* sysdeps/ieee754/ldbl-opt/w_llogbl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add llogb.
	(CFLAGS-nldbl-llogb.c): New variable.
	* 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 2016-12-02 01:42:49 +00:00
parent 6dc0741677
commit 55a38f8236
44 changed files with 398 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
ChangeLog
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@ -1,3 +1,71 @@
2016-12-02 Joseph Myers <joseph@codesourcery.com>
* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb):
New declaration.
* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb): New
macro.
* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (__FP_LONG_MAX):
New macro.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGB0): Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGBNAN): Likewise.
* math/Versions (llogb): New libm symbol at version GLIBC_2.25.
(llogbf): Likewise.
(llogbl): Likewise.
* math/Makefile (gen-libm-calls): Add w_llogbF.
(tests): Add test-fp-llogb-constants.
* math/w_llogb_template.c: New file. Based on
math/w_ilogb_template.c.
* math/libm-test.inc (llogb_test_data): New array.
(llogb_test): New function.
(main): Call llogb_test.
* math/test-fp-llogb-constants.c: New file. Based on
math/test-fp-ilogb-constants.c.
* math/test-tgmath-ret.c (llogb): New CHECK_RET_CONST call.
(do_test): Call check_return_llogb.
* math/test-tgmath.c (NCALLS): Increase to 126.
(F(compile_test)): Call llogb.
(F(llogb)): New function.
* manual/math.texi (Exponents and Logarithms): Document llogb,
llogbf, llogbl, FP_LLOGB0 and FP_LLOGBNAN.
* manual/libm-err-tab.pl (@all_functions): Add llogb.
* sysdeps/ieee754/ldbl-opt/nldbl-llogb.c: New file.
* sysdeps/ieee754/ldbl-opt/w_llogbl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add llogb.
(CFLAGS-nldbl-llogb.c): New variable.
* 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.
2016-12-01 Joseph Myers <joseph@codesourcery.com>
* sysdeps/ieee754/ldbl-128/s_getpayloadl.c (getpayloadl): Use

3
NEWS
View File

@ -53,6 +53,9 @@ Version 2.25
- Signaling NaN macros: SNANF, SNAN, SNANL.
- llogb functions: the llogb, llogbf and llogbl functions, and the
FP_LLOGB0 and FP_LLOGBNAN macros.
- Comparison macros: iseqsig.
- Classification macros: iscanonical, issubnormal, iszero.

2
manual/libm-err-tab.pl
View File

@ -58,7 +58,7 @@ use vars qw (%results @all_floats %suffices @all_functions);
"creal", "csin", "csinh", "csqrt", "ctan", "ctanh", "erf", "erfc",
"exp", "exp10", "exp2", "expm1", "fabs", "fdim", "floor", "fma",
"fmax", "fmin", "fmod", "frexp", "gamma", "hypot",
"ilogb", "j0", "j1", "jn", "lgamma", "lrint",
"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",

31
manual/math.texi
View File

@ -584,9 +584,20 @@ negative), @code{logb} returns @math{@infinity{}}. If @var{x} is zero,
@comment math.h
@comment ISO
@deftypefunx int ilogbl (long double @var{x})
@comment math.h
@comment ISO
@deftypefunx {long int} llogb (double @var{x})
@comment math.h
@comment ISO
@deftypefunx {long int} llogbf (float @var{x})
@comment math.h
@comment ISO
@deftypefunx {long int} llogbl (long double @var{x})
@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
These functions are equivalent to the corresponding @code{logb}
functions except that they return signed integer values.
functions except that they return signed integer values. The
@code{ilogb} functions are from ISO C99; the @code{llogb} functions
are from TS 18661-1:2014.
@end deftypefun
@noindent
@ -603,6 +614,15 @@ numeric value is either @code{INT_MIN} or @code{-INT_MAX}.
This macro is defined in @w{ISO C99}.
@end deftypevr
@comment math.h
@comment ISO
@deftypevr Macro {long int} FP_LLOGB0
@code{llogb} returns this value if its argument is @code{0}. The
numeric value is either @code{LONG_MIN} or @code{-LONG_MAX}.
This macro is defined in TS 18661-1:2014.
@end deftypevr
@comment math.h
@comment ISO
@deftypevr Macro int FP_ILOGBNAN
@ -612,6 +632,15 @@ numeric value is either @code{INT_MIN} or @code{INT_MAX}.
This macro is defined in @w{ISO C99}.
@end deftypevr
@comment math.h
@comment ISO
@deftypevr Macro {long int} FP_LLOGBNAN
@code{llogb} returns this value if its argument is @code{NaN}. The
numeric value is either @code{LONG_MIN} or @code{LONG_MAX}.
This macro is defined in TS 18661-1:2014.
@end deftypevr
These values are system specific. They might even be the same. The
proper way to test the result of @code{ilogb} is as follows:

4
math/Makefile
View File

@ -52,7 +52,7 @@ gen-libm-calls = cargF conjF cimagF crealF cabsF s_cacosF \
k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF \
s_cpowF s_clog10F s_fdimF s_nextdownF s_fmaxF s_fminF \
s_nanF s_iseqsigF s_canonicalizeF w_ilogbF
s_nanF s_iseqsigF s_canonicalizeF w_ilogbF w_llogbF
libm-calls = \
e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
@ -159,7 +159,7 @@ tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
test-fesetexcept-traps test-fetestexceptflag test-femode \
test-femode-traps test-iszero-excess-precision \
test-iseqsig-excess-precision test-flt-eval-method \
test-fp-ilogb-constants $(tests-static)
test-fp-ilogb-constants test-fp-llogb-constants $(tests-static)
tests-static = test-fpucw-static test-fpucw-ieee-static \
test-signgam-uchar-static test-signgam-uchar-init-static \
test-signgam-uint-static test-signgam-uint-init-static \

1
math/Versions
View File

@ -223,5 +223,6 @@ libm {
canonicalize; canonicalizef; canonicalizel;
setpayload; setpayloadf; setpayloadl;
setpayloadsig; setpayloadsigf; setpayloadsigl;
llogb; llogbf; llogbl;
}
}

5
math/bits/mathcalls.h
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@ -315,6 +315,11 @@ __MATHCALL (scalbn,, (_Mdouble_ __x, int __n));
__MATHDECL (int,ilogb,, (_Mdouble_ __x));
#endif
#if __GLIBC_USE (IEC_60559_BFP_EXT)
/* Like ilogb, but returning long int. */
__MATHDECL (long int, llogb,, (_Mdouble_ __x));
#endif
#ifdef __USE_ISOC99
/* Return X times (2 to the Nth power). */
__MATHCALL (scalbln,, (_Mdouble_ __x, long int __n));

45
math/libm-test.inc
View File

@ -50,7 +50,7 @@
ilogb, iscanonical, isfinite, isinf, isnan, isnormal, issignaling,
issubnormal, iszero, iseqsig, isless, islessequal, isgreater,
isgreaterequal, islessgreater, isunordered, j0, j1, jn,
ldexp, lgamma, log, log10, log1p, log2, logb,
ldexp, lgamma, llogb, log, log10, log1p, log2, logb,
modf, nearbyint, nextafter, nexttoward,
pow, pow10, remainder, remquo, rint, lrint, llrint,
round, lround, llround,
@ -9171,6 +9171,48 @@ gamma_test (void)
}
static const struct test_f_l_data llogb_test_data[] =
{
TEST_f_l (llogb, 1, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_l (llogb, lit_e, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_l (llogb, 1024, 10, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_l (llogb, -2000, 10, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_l (llogb, 0.5, -1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
TEST_f_l (llogb, -0.5, -1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
#if MANT_DIG >= 57
TEST_f_l (llogb, 0x1.ffffffffffffffp1L, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_l (llogb, -0x1.ffffffffffffffp1L, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
TEST_f_l (llogb, min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
TEST_f_l (llogb, -min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
TEST_f_l (llogb, min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
TEST_f_l (llogb, -min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
TEST_f_l (llogb, max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
TEST_f_l (llogb, -max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
/* llogb (0.0) == FP_LLOGB0 plus invalid exception */
TEST_f_l (llogb, 0.0, FP_LLOGB0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_f_l (llogb, -0.0, FP_LLOGB0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
/* llogb (qNaN) == FP_LLOGBNAN plus invalid exception */
TEST_f_l (llogb, qnan_value, FP_LLOGBNAN, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_f_l (llogb, -qnan_value, FP_LLOGBNAN, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_f_l (llogb, snan_value, FP_LLOGBNAN, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_f_l (llogb, -snan_value, FP_LLOGBNAN, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
/* llogb (inf) == LONG_MAX plus invalid exception */
TEST_f_l (llogb, plus_infty, LONG_MAX, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
/* llogb (-inf) == LONG_MAX plus invalid exception */
TEST_f_l (llogb, minus_infty, LONG_MAX, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
};
static void
llogb_test (void)
{
ALL_RM_TEST (llogb, 1, llogb_test_data, RUN_TEST_LOOP_f_l, END);
}
static const struct test_f_l_data lrint_test_data[] =
{
/* Bug 6798: errno setting may be missing. */
@ -13775,6 +13817,7 @@ main (int argc, char **argv)
modf_test ();
pow10_test ();
ilogb_test ();
llogb_test ();
scalb_test ();
scalbn_test ();
scalbln_test ();

21
math/math.h
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@ -97,11 +97,13 @@ typedef _Float128x double_t;
# endif
#endif
/* Define macros for the return value of ilogb, based on
/* Define macros for the return values of ilogb and llogb, based on
__FP_LOGB0_IS_MIN and __FP_LOGBNAN_IS_MIN.
FP_ILOGB0 Expands to a value returned by `ilogb (0.0)'.
FP_ILOGBNAN Expands to a value returned by `ilogb (NAN)'.
FP_LLOGB0 Expands to a value returned by `llogb (0.0)'.
FP_LLOGBNAN Expands to a value returned by `llogb (NAN)'.
*/
@ -118,6 +120,23 @@ typedef _Float128x double_t;
# define FP_ILOGBNAN 2147483647
# endif
#endif
#if __GLIBC_USE (IEC_60559_BFP_EXT)
# if __WORDSIZE == 32
# define __FP_LONG_MAX 0x7fffffffL
# else
# define __FP_LONG_MAX 0x7fffffffffffffffL
# endif
# if __FP_LOGB0_IS_MIN
# define FP_LLOGB0 (-__FP_LONG_MAX - 1)
# else
# define FP_LLOGB0 (-__FP_LONG_MAX)
# endif
# if __FP_LOGBNAN_IS_MIN
# define FP_LLOGBNAN (-__FP_LONG_MAX - 1)
# else
# define FP_LLOGBNAN __FP_LONG_MAX
# endif
#endif
/* Get information about long double. */

48
math/test-fp-llogb-constants.c Normal file
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@ -0,0 +1,48 @@
/* Test requirements on FP_LLOGB* constants.
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 <limits.h>
#include <math.h>
#if FP_LLOGB0 >= 0
# error "FP_LLOGB0 is positive"
#endif
#if FP_LLOGB0 != LONG_MIN && FP_LLOGB0 != -LONG_MAX
# error "FP_LLOGB0 must be LONG_MIN or -LONG_MAX"
#endif
#if FP_LLOGBNAN >= 0 && FP_LLOGBNAN != LONG_MAX
# error "FP_LLOGBNAN must be LONG_MIN or LONG_MAX"
#endif
#if FP_LLOGBNAN < 0 && FP_LLOGBNAN != LONG_MIN
# error "FP_LLOGBNAN must be LONG_MIN or LONG_MAX"
#endif
#if (FP_ILOGB0 == INT_MIN) != (FP_LLOGB0 == LONG_MIN)
# error "FP_ILOGB0 and FP_LLOGB0 inconsistent"
#endif
#if (FP_ILOGBNAN == INT_MIN) != (FP_LLOGBNAN == LONG_MIN)
# error "FP_ILOGBNAN and FP_LLOGBNAN inconsistent"
#endif
/* This is a compilation test. */
#define TEST_FUNCTION 0
#include "../test-skeleton.c"

2
math/test-tgmath-ret.c
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@ -61,6 +61,7 @@ check_return_ ##func (void) \
}
CHECK_RET_CONST(ilogb, int)
CHECK_RET_CONST(llogb, long)
CHECK_RET_CONST(lrint, long)
CHECK_RET_CONST(lround, long)
CHECK_RET_CONST(llrint, long long)
@ -70,6 +71,7 @@ static int
do_test (void)
{
check_return_ilogb ();
check_return_llogb ();
check_return_lrint ();
check_return_lround ();
check_return_llrint ();

12
math/test-tgmath.c
View File

@ -50,7 +50,7 @@ int count_cdouble;
int count_cfloat;
int count_cldouble;
#define NCALLS 125
#define NCALLS 126
#define NCALLS_INT 4
#define NCCALLS 47
@ -281,6 +281,7 @@ F(compile_test) (void)
a = scalb (scalb (x, a), (TYPE) (6));
k = scalbn (a, 7) + scalbln (c, 10l);
i = ilogb (x);
j = llogb (x);
a = fdim (fdim (x, a), fdim (c, b));
b = fmax (fmax (a, x), fmax (c, b));
a = fmin (fmin (x, a), fmin (c, b));
@ -379,6 +380,7 @@ F(compile_test) (void)
a = scalb (y, (const TYPE) (6));
k = scalbn (y, 7) + scalbln (y, 10l);
i = ilogb (y);
j = llogb (y);
a = fdim (y, y);
a = fmax (y, y);
a = fmin (y, y);
@ -846,6 +848,14 @@ int
return x;
}
long int
(F(llogb)) (TYPE x)
{
++count;
P ();
return x;
}
TYPE
(F(fdim)) (TYPE x, TYPE y)
{

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)
/* Like ilogb, but returning long int. */
#define llogb(Val) __TGMATH_UNARY_REAL_RET_ONLY (Val, long int, llogb)
/* Total order operation. */
# define totalorder(Val1, Val2) __TGMATH_BINARY_REAL_ONLY (Val1, Val2, \
totalorder)

46
math/w_llogb_template.c Normal file
View File

@ -0,0 +1,46 @@
/* Wrapper to implement llogb in terms of ilogb.
Copyright (C) 2012-2016 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 <errno.h>
#include <limits.h>
#include <math_private.h>
long int
M_DECL_FUNC (__llogb) (FLOAT x)
{
int r = M_SUF (__ieee754_ilogb) (x);
long int lr = r;
if (__glibc_unlikely (r == FP_ILOGB0)
|| __glibc_unlikely (r == FP_ILOGBNAN)
|| __glibc_unlikely (r == INT_MAX))
{
#if LONG_MAX != INT_MAX
if (r == FP_ILOGB0)
lr = FP_LLOGB0;
else if (r == FP_ILOGBNAN)
lr = FP_LLOGBNAN;
else
lr = LONG_MAX;
#endif
__set_errno (EDOM);
__feraiseexcept (FE_INVALID);
}
return lr;
}
declare_mgen_alias (__llogb, llogb)

3
sysdeps/ieee754/ldbl-opt/Makefile
View File

@ -43,7 +43,7 @@ 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
canonicalize setpayload setpayloadsig llogb
libnldbl-routines = $(libnldbl-calls:%=nldbl-%)
libnldbl-inhibit-o = $(object-suffixes)
libnldbl-static-only-routines = $(libnldbl-routines)
@ -112,6 +112,7 @@ CFLAGS-nldbl-jn.c = -fno-builtin-jnl
CFLAGS-nldbl-ldexp.c = -fno-builtin-ldexpl
CFLAGS-nldbl-lgamma.c = -fno-builtin-lgammal
CFLAGS-nldbl-lgamma_r.c = -fno-builtin-lgammal_r
CFLAGS-nldbl-llogb.c = -fno-builtin-llogbl
CFLAGS-nldbl-llrint.c = -fno-builtin-llrintl
CFLAGS-nldbl-llround.c = -fno-builtin-llroundl
CFLAGS-nldbl-log.c = -fno-builtin-logl

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

@ -0,0 +1,26 @@
/* Compatibility routine for IEEE double as long double for llogb.
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"
long int
attribute_hidden
llogbl (double x)
{
return llogb (x);
}

5
sysdeps/ieee754/ldbl-opt/w_llogbl.c Normal file
View File

@ -0,0 +1,5 @@
/* llogbl is not subject to complex aliasing rules. It was added in
glibc 2.25. */
#define declare_mgen_alias(from, to) weak_alias (M_SUF (from), M_SUF (to))
#include <math-type-macros-ldouble.h>
#include <w_llogb_template.c>

3
sysdeps/nacl/libm.abilist
View File

@ -392,6 +392,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -424,6 +424,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -434,6 +434,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -81,6 +81,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -437,6 +437,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -366,6 +366,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -81,6 +81,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -435,6 +435,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -392,6 +392,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -394,6 +394,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -426,6 +426,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -392,6 +392,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -437,6 +437,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -436,6 +436,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -431,6 +431,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -112,6 +112,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -424,6 +424,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -422,6 +422,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -427,6 +427,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -425,6 +425,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -426,6 +426,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl 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

@ -425,6 +425,9 @@ GLIBC_2.25 fetestexceptflag F
GLIBC_2.25 getpayload F
GLIBC_2.25 getpayloadf F
GLIBC_2.25 getpayloadl F
GLIBC_2.25 llogb F
GLIBC_2.25 llogbf F
GLIBC_2.25 llogbl F
GLIBC_2.25 setpayload F
GLIBC_2.25 setpayloadf F
GLIBC_2.25 setpayloadl F