glibc/math/Versions
Joseph Myers eb3c12c784 Add setpayload, setpayloadf, setpayloadl.
TS 18661-1 defines functions for manipulating the payloads of NaNs.
This patch implements the setpayload functions for glibc; these set a
number (pointed to by a function argument) to a quiet NaN with the
given payload, or to +0 if the given payload is not valid.  The
implementations are structured to allow the substance of the
implementation to be shared with the setpayloadsig functions when
those are added.

The semantics in the TS are not entirely clear in the case where the
payload passed to the function is zero (see discussion on the WG14
reflector last month).  This patch implements what seems the most
sensible interpretation, that -0 is never valid to give as the
payload, but +0 is valid in the case where the kind of NaN being
generated has its high mantissa bit set so payload 0 is actually
possible in such a NaN.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(setpayload): New declaration.
	* math/Versions (setpayload): New libm symbol at version
	GLIBC_2.25.
	(setpayloadf): Likewise.
	(setpayloadl): Likewise.
	* math/Makefile (libm-calls): Add s_setpayloadF.
	* math/libm-test.inc (struct test_Ffp_b1_data): Rename to struct
	test_Ff_b1_data.
	(RUN_TEST_Ff_b1): New macro.
	(RUN_TEST_LOOP_Ff_b1): Likewise.
	(canonicalize_test_data): Update type.
	(setpayload_test_data): New array.
	(setpayload_test): New function.
	(main): Call setpayload_test.
	* manual/arith.texi (FP Bit Twiddling): Document setpayload,
	setpayloadf and setpayloadl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_setpayload.c: New file.
	* sysdeps/ieee754/dbl-64/s_setpayload_main.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_setpayload_main.c:
	Likewise.
	* sysdeps/ieee754/flt-32/s_setpayloadf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_setpayloadf_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-setpayload.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	setpayload.
	(CFLAGS-nldbl-setpayload.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.
2016-11-19 00:16:28 +00:00

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libc {
GLIBC_2.0 {
# functions used in inline functions or macros
__isnan; __isnanf; __isnanl; __finite; __finitef; __finitel;
__isinf; __isinff; __isinfl;
# global variables
__fpu_control;
# c*
copysign; copysignf; copysignl;
# f*
finite; finitef; finitel; frexp; frexpf; frexpl;
# i*
isinf; isinff; isinfl; isnan; isnanf; isnanl; ldexp; ldexpf; ldexpl;
# m*
modf; modff; modfl;
# s*
scalbn; scalbnf; scalbnl;
}
GLIBC_2.1 {
# functions used in inline functions or macros
__signbit; __signbitf; __signbitl;
# s*
scalbln; scalblnf; scalblnl;
}
GLIBC_2.20 {
}
}
libm {
GLIBC_2.0 {
# mathematical functions
acos; acosf; acosl;
acosh; acoshf; acoshl;
asin; asinf; asinl;
asinh; asinhf; asinhl;
atan2; atan2f; atan2l;
atan; atanf; atanl;
atanh; atanhf; atanhl;
cbrt; cbrtf; cbrtl;
ceil; ceilf; ceill;
copysign; copysignf; copysignl;
cos; cosf; cosl;
coshf; cosh; coshl;
drem; dremf; dreml;
erf; erff; erfl;
erfc; erfcf; erfcl;
exp; expf; expl;
expm1; expm1f; expm1l;
fabs; fabsf; fabsl;
finite; finitef; finitel;
floor; floorf; floorl;
fmod; fmodf; fmodl;
frexp; frexpf; frexpl;
gamma; gammaf; gammal;
gamma_r; gammaf_r; gammal_r;
hypot; hypotf; hypotl;
ilogb; ilogbf; ilogbl;
j0; j0f; j0l;
j1; j1f; j1l;
jn; jnf; jnl;
ldexp; ldexpf; ldexpl;
lgamma; lgammaf; lgammal;
lgamma_r; lgammaf_r; lgammal_r;
log10; log10f; log10l;
log1p; log1pf; log1pl;
log; logf; logl;
logb; logbf; logbl;
matherr;
modf; modff; modfl;
nextafter; nextafterf; nextafterl;
pow; powf; powl;
remainder; remainderf; remainderl;
rint; rintf; rintl;
scalb; scalbf; scalbl;
scalbn; scalbnf; scalbnl;
significand; significandf; significandl;
sin; sinf; sinl;
sinh; sinhf; sinhl;
sqrt; sqrtf; sqrtl;
tan; tanf; tanl;
tanh; tanhf; tanhl;
y0; y0f; y0l;
y1; y1f; y1l;
yn; ynf; ynl;
# global variables
_LIB_VERSION; signgam;
}
GLIBC_2.1 {
# mathematical functions
exp2; exp2f; # exp2l; -- bug omitted this until GLIBC_2.4 (below)
exp10; exp10f; exp10l;
fdim; fdimf; fdiml;
fma; fmaf; fmal;
fmax; fmaxf; fmaxl;
fmin; fminf; fminl;
log2; log2f; log2l;
nan; nanf; nanl;
nearbyint; nearbyintf; nearbyintl;
nexttoward; nexttowardf; nexttowardl;
pow10; pow10f; pow10l;
remquo; remquof; remquol;
lrint; lrintf; lrintl;
llrint; llrintf; llrintl;
round; roundf; roundl;
lround; lroundf; lroundl;
llround; llroundf; llroundl;
scalbln; scalblnf; scalblnl;
sincos; sincosf; sincosl;
trunc; truncf; truncl;
tgamma; tgammaf; tgammal;
# complex functions
cabs; cabsf; cabsl;
cacos; cacosf; cacosl;
cacosh; cacoshf; cacoshl;
carg; cargf; cargl;
casin; casinf; casinl;
casinh; casinhf; casinhl;
catan; catanf; catanl;
catanh; catanhf; catanhl;
ccos; ccosf; ccosl;
ccosh; ccoshf; ccoshl;
cexp; cexpf; cexpl;
cimag; cimagf; cimagl;
clog; clogf; clogl;
clog10; clog10f; clog10l;
__clog10; __clog10f; __clog10l;
conj; conjf; conjl;
cpow; cpowf; cpowl;
cproj; cprojf; cprojl;
creal; crealf; creall;
csin; csinf; csinl;
csinh; csinhf; csinhl;
csqrt; csqrtf; csqrtl;
ctan; ctanf; ctanl;
ctanh; ctanhf; ctanhl;
# fp environment functions
feclearexcept; fegetenv; fegetexceptflag;
fegetround; feholdexcept; feraiseexcept;
fesetenv; fesetexceptflag; fesetround;
fetestexcept; feupdateenv;
# functions used in inline functions or macros
__finite; __finitef; __finitel;
__fpclassify; __fpclassifyf; __fpclassifyl;
__signbit; __signbitf; __signbitl;
}
GLIBC_2.2 {
# fp environment functions changes from ISO C99 TR1
feclearexcept; fegetenv; fegetexceptflag; feraiseexcept;
fesetenv; fesetexceptflag; feupdateenv;
# fp environment function
feenableexcept; fedisableexcept; fegetexcept;
}
GLIBC_2.4 {
# A bug in sysdeps/generic/w_exp2.c kept this from appearing
# in GLIBC_2.1 as it should have on platforms using that
# implementation file. On others, sysdeps/CPU/Versions now
# puts exp2l in GLIBC_2.1, which will override this entry.
exp2l;
}
GLIBC_2.15 {
# Optimized -ffinite-math-only entry points
__acos_finite; __acosf_finite; __acosl_finite;
__acosh_finite; __acoshf_finite; __acoshl_finite;
__asin_finite; __asinf_finite; __asinl_finite;
__atan2_finite; __atan2f_finite; __atan2l_finite;
__atanh_finite; __atanhf_finite; __atanhl_finite;
__cosh_finite; __coshf_finite; __coshl_finite;
__exp10_finite; __exp10f_finite; __exp10l_finite;
__exp2_finite; __exp2f_finite; __exp2l_finite;
__fmod_finite; __fmodf_finite; __fmodl_finite;
__hypot_finite; __hypotf_finite; __hypotl_finite;
__j0_finite; __j0f_finite; __j0l_finite;
__y0_finite; __y0f_finite; __y0l_finite;
__j1_finite; __j1f_finite; __j1l_finite;
__y1_finite; __y1f_finite; __y1l_finite;
__jn_finite; __jnf_finite; __jnl_finite;
__yn_finite; __ynf_finite; __ynl_finite;
__lgamma_r_finite; __lgammaf_r_finite; __lgammal_r_finite;
__log_finite; __logf_finite; __logl_finite;
__log10_finite; __log10f_finite; __log10l_finite;
__log2_finite; __log2f_finite; __log2l_finite;
__pow_finite; __powf_finite; __powl_finite;
__remainder_finite; __remainderf_finite; __remainderl_finite;
__scalb_finite; __scalbf_finite; __scalbl_finite;
__sinh_finite; __sinhf_finite; __sinhl_finite;
__sqrt_finite; __sqrtf_finite; __sqrtl_finite;
__gamma_r_finite; __gammaf_r_finite; __gammal_r_finite;
__exp_finite; __expf_finite; __expl_finite;
}
GLIBC_2.18 {
__issignaling; __issignalingf; __issignalingl;
}
GLIBC_2.23 {
# The __signgam name must be exported for the signgam weak alias
# to work. New symbol versions of lgamma* that set __signgam are
# needed to preserve compatibility with old binaries that have a
# dynamic symbol for signgam but not __signgam.
lgamma; lgammaf; lgammal; __signgam;
}
GLIBC_2.24 {
nextup; nextupf; nextupl;
nextdown; nextdownf; nextdownl;
}
GLIBC_2.25 {
fesetexcept; fetestexceptflag; fegetmode; fesetmode;
__iscanonicall; __iseqsigf; __iseqsig; __iseqsigl;
totalorder; totalorderf; totalorderl;
totalordermag; totalordermagf; totalordermagl;
getpayload; getpayloadf; getpayloadl;
canonicalize; canonicalizef; canonicalizel;
setpayload; setpayloadf; setpayloadl;
}
}