mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 04:01:10 +00:00
9ac4470888
This patch converts libm function implementations in math/ from using weak_alias to using libm_alias_double to define public function names, in cases where it would be appropriate to define _Float64 / _Float32x aliases for those functions as well. This eliminates many NO_LONG_DOUBLE conditionals and ldbl-opt wrappers round these function implementations. Tested for x86_64. Also tested with build-many-glibcs.py. Binary differences seen are that the different order in which remainder and drem symbols get defined as a result of this patch (the same source file defines the same aliases, but in a different order of definition) changes the order of symbols in the final libm.so when long double = double, and for ldbl-opt configurations, the compat symbols for Bessel functions were previously defined by e.g. "compat_symbol (libm, j0, j0l, GLIBC_2_0)", which declares j0l as a compat symbol based on j0 and so makes j0l weak because j0 is weak, and are now defined (indirectly via the relevant macros) based on e.g. __j0, so are no longer weak because __j0 isn't weak. * math/s_fma.c: Include <libm-alias-double.h>. (fma): Define using libm_alias_double. * math/s_nextafter.c: Include <libm-alias-double.h>. (nextafter): Define using libm_alias_double. * math/w_acos_compat.c: Include <libm-alias-double.h>. (acos): Define using libm_alias_double. * math/w_acosh_compat.c: Include <libm-alias-double.h>. (aocsh): Define using libm_alias_double. * math/w_asin_compat.c: Include <libm-alias-double.h>. (asin): Define using libm_alias_double. * math/w_atan2_compat.c: Include <libm-alias-double.h>. (atan2): Define using libm_alias_double. * math/w_atanh_compat.c: Include <libm-alias-double.h>. (atanh): Define using libm_alias_double. * math/w_cosh_compat.c: Include <libm-alias-double.h>. (cosh): Define using libm_alias_double. * math/w_exp10_compat.c: Include <libm-alias-double.h>. (exp10): Define using libm_alias_double. * math/w_exp2_compat.c: Include <libm-alias-double.h>. (exp2): Define using libm_alias_double. * math/w_exp_compat.c: Include <libm-alias-double.h>. (exp): Define using libm_alias_double. * math/w_fmod_compat.c: Include <libm-alias-double.h>. (fmod): Define using libm_alias_double. * math/w_hypot_compat.c: Include <libm-alias-double.h>. (hypot): Define using libm_alias_double. * math/w_j0_compat.c: Include <libm-alias-double.h>. (j0): Define using libm_alias_double. (y0): Likewise. * math/w_j1_compat.c: Include <libm-alias-double.h>. (j1): Define using libm_alias_double. (y1): Likewise. * math/w_jn_compat.c: Include <libm-alias-double.h>. (jn): Define using libm_alias_double. (yn): Likewise. * math/w_log10_compat.c: Include <libm-alias-double.h>. (log10): Define using libm_alias_double. * math/w_log2_compat.c: Include <libm-alias-double.h>. (log2): Define using libm_alias_double. * math/w_log_compat.c: Include <libm-alias-double.h>. (log): Define using libm_alias_double. * math/w_pow_compat.c: Include <libm-alias-double.h>. (pow): Define using libm_alias_double. * math/w_remainder_compat.c: Include <libm-alias-double.h>. (remainder): Define using libm_alias_double. * math/w_sinh_compat.c: Include <libm-alias-double.h>. (sinh): Define using libm_alias_double. * math/w_sqrt_compat.c: Include <libm-alias-double.h>. (sqrt): Define using libm_alias_double. * math/w_tgamma_compat.c: Include <libm-alias-double.h>. (tgamma): Define using libm_alias_double. * sysdeps/ieee754/ldbl-opt/s_nextafter.c [LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (nextafterl): Do not define compat symbol here. * sysdeps/ieee754/ldbl-opt/w_exp10_compat.c [LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)] (exp10l): Likewise. * sysdeps/ieee754/ldbl-opt/w_remainder_compat.c [LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (remainderl): Likewise. * sysdeps/ieee754/ldbl-opt/w_acos_compat.c: Remove. * sysdeps/ieee754/ldbl-opt/w_acosh_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_asin_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_atan2_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_atanh_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_cosh_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_exp_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_fmod_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_hypot_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_j0_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_j1_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_jn_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_log10_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_log2_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_log_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_pow_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_sinh_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_sqrt_compat.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_tgamma_compat.c: Likewise.
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/* @(#)w_gamma.c 5.1 93/09/24 */
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
/* double gamma(double x)
|
|
* Return the logarithm of the Gamma function of x or the Gamma function of x,
|
|
* depending on the library mode.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <math.h>
|
|
#include <math_private.h>
|
|
#include <math-svid-compat.h>
|
|
#include <libm-alias-double.h>
|
|
|
|
#if LIBM_SVID_COMPAT
|
|
double
|
|
__tgamma(double x)
|
|
{
|
|
int local_signgam;
|
|
double y = __ieee754_gamma_r(x,&local_signgam);
|
|
|
|
if(__glibc_unlikely (!isfinite (y) || y == 0)
|
|
&& (isfinite (x) || (isinf (x) && x < 0.0))
|
|
&& _LIB_VERSION != _IEEE_) {
|
|
if (x == 0.0)
|
|
return __kernel_standard(x,x,50); /* tgamma pole */
|
|
else if(__floor(x)==x&&x<0.0)
|
|
return __kernel_standard(x,x,41); /* tgamma domain */
|
|
else if (y == 0)
|
|
__set_errno (ERANGE); /* tgamma underflow */
|
|
else
|
|
return __kernel_standard(x,x,40); /* tgamma overflow */
|
|
}
|
|
return local_signgam < 0 ? -y : y;
|
|
}
|
|
libm_alias_double (__tgamma, tgamma)
|
|
#endif
|