qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

math: Remove the SVID error handling from atanhf 

It improves latency for about 1-10% and throughput for about 5-10%.

Tested on x86_64-linux-gnu and i686-linux-gnu.

Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>
This commit is contained in:
Adhemerval Zanella 2025-10-08 10:55:14 -03:00
parent 8facb464b4
commit 555c39c0fc
29 changed files with 52 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
math/Versions
View File

@ -691,6 +691,7 @@ libm {
acosf;
acoshf;
asinf;
atanhf;
log10f;
}
}

11
math/w_atanhf_compat.c
View File

@ -21,10 +21,10 @@
#include <libm-alias-float.h>
#if LIBM_SVID_COMPAT
#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_43)
/* wrapper atanhf */
float
__atanhf (float x)
__atanh_compatf (float x)
{
if (__builtin_expect (isgreaterequal (fabsf (x), 1.0f), 0)
&& _LIB_VERSION != _IEEE_)
@ -35,5 +35,10 @@ __atanhf (float x)
return __ieee754_atanhf (x);
}
libm_alias_float (__atanh, atanh)
# ifdef NO_COMPAT_NEEDED
strong_alias (__atanh_compatf, __atanhf)
libm_alias_float (__atanh_compat, atanh)
# else
compat_symbol (libm, __atanh_compatf, atanhf, GLIBC_2_0);
# endif
#endif

11
sysdeps/ieee754/flt-32/e_atanhf.c
View File

@ -27,6 +27,8 @@ SOFTWARE.
#include <math.h>
#include <stdint.h>
#include <libm-alias-finite.h>
#include <libm-alias-float.h>
#include <math-svid-compat.h>
#include "math_config.h"
static __attribute__((noinline)) float
@ -42,7 +44,7 @@ as_special (float x)
}
float
__ieee754_atanhf (float x)
__atanhf (float x)
{
/* Calculate atanh(x) using the difference of two logarithms -- atanh(x) =
(ln(1+x) - ln(1-x))/2 */
@ -175,4 +177,11 @@ __ieee754_atanhf (float x)
}
return ub;
}
strong_alias (__atanhf, __ieee754_atanhf)
#if LIBM_SVID_COMPAT
versioned_symbol (libm, __atanhf, atanhf, GLIBC_2_43);
libm_alias_float_other (__atanh, atanh)
#else
libm_alias_float (__atanh, atanh)
#endif
libm_alias_finite (__ieee754_atanhf, __atanhf)

1
sysdeps/ieee754/flt-32/w_atanhf.c Normal file
View File

@ -0,0 +1 @@
/* Not needed. */

8
sysdeps/m68k/m680x0/fpu/w_atanhf_compat.c Normal file
View File

@ -0,0 +1,8 @@
/* m68k provides an optimized __ieee754_atanhf. */
#ifdef SHARED
# define NO_COMPAT_NEEDED 1
# include <math/w_atanhf_compat.c>
#else
# include <math-type-macros-float.h>
# include <w_atanh_template.c>
#endif

1
sysdeps/mach/hurd/i386/libm.abilist
View File

@ -1320,6 +1320,7 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 fmod F
GLIBC_2.43 fmodf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/aarch64/libm.abilist
View File

@ -1288,4 +1288,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/alpha/libm.abilist
View File

@ -1447,4 +1447,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/arm/be/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/arm/le/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/hppa/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/i386/libm.abilist
View File

@ -1327,6 +1327,7 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 fmod F
GLIBC_2.43 fmodf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/microblaze/be/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/microblaze/le/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
View File

@ -1288,4 +1288,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
View File

@ -1100,4 +1100,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
View File

@ -1099,4 +1099,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libm.abilist
View File

@ -1093,4 +1093,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libm.abilist
View File

@ -1477,4 +1477,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
View File

@ -1391,4 +1391,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
View File

@ -1391,4 +1391,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/sh/be/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/sh/le/libm.abilist
View File

@ -953,4 +953,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
View File

@ -1398,4 +1398,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
View File

@ -1288,4 +1288,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
View File

@ -1321,4 +1321,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F

1
sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
View File

@ -1321,4 +1321,5 @@ GLIBC_2.42 rsqrtl F
GLIBC_2.43 acosf F
GLIBC_2.43 acoshf F
GLIBC_2.43 asinf F
GLIBC_2.43 atanhf F
GLIBC_2.43 log10f F