New exp10f version without SVID compat wrapper

This patch changes the exp10f error handling semantics to only set
errno according to POSIX rules.  New symbol version is introduced at
GLIBC_2.32.  The old wrappers are kept for compat symbols.

There are some outliers that need special handling:

  - ia64 provides an optimized implementation of exp10f that uses ia64
    specific routines to set SVID compatibility.  The new symbol version
    is aliased to the exp10f one.

  - m68k also provides an optimized implementation, and the new version
    uses it instead of the sysdeps/ieee754/flt32 one.

  - riscv and csky uses the generic template implementation that
    does not provide SVID support.  For both cases a new exp10f
    version is not added, but rather the symbols version of the
    generic sysdeps/ieee754/flt32 is adjusted instead.

Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
powerpc64le-linux-gnu.

math/Versions

@@ -590,4 +590,7 @@ libm {
     totalorderf128;
     totalordermagf128;
   }
+  GLIBC_2.32 {
+    exp10f;
+  }
 }

math/w_exp10f.c

@@ -0,0 +1 @@
+/* Empty.  */

math/w_exp10f_compat.c

@@ -28,9 +28,9 @@
 
 #if LIBM_SVID_COMPAT
 float
-__exp10f (float x)
+__exp10f_compat (float x)
 {
-  float z = __ieee754_exp10f (x);
+  float z = __exp10f (x);
   if (__builtin_expect (!isfinite (z) || z == 0, 0)
       && isfinite (x) && _LIB_VERSION != _IEEE_)
     /* exp10f overflow (146) if x > 0, underflow (147) if x < 0.  */
@@ -38,9 +38,9 @@ __exp10f (float x)
 
   return z;
 }
-libm_alias_float (__exp10, exp10)
+compat_symbol (libm, __exp10f_compat, exp10f, GLIBC_2_1);
 # if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)
-strong_alias (__exp10f, __pow10f)
+strong_alias (__exp10f_compat, __pow10f)
 compat_symbol (libm, __pow10f, pow10f, GLIBC_2_1);
 # endif
 #endif

sysdeps/ia64/fpu/e_exp10f.S

@@ -218,7 +218,7 @@ LOCAL_OBJECT_END(T_table)
 
 
 .section .text
-GLOBAL_IEEE754_ENTRY(exp10f)
+GLOBAL_IEEE754_ENTRY(__exp10f)
 
 
 {.mfi
@@ -487,11 +487,17 @@ OUT_RANGE_exp10:
 }
 ;;
 
-GLOBAL_IEEE754_END(exp10f)
+GLOBAL_IEEE754_END(__exp10f)
 libm_alias_float_other (__exp10, exp10)
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)
-compat_symbol (libm, exp10f, pow10f, GLIBC_2_2)
+strong_alias (__exp10f, __pow10f_compat)
+compat_symbol (libm, __pow10f_compat, pow10f, GLIBC_2_2)
 #endif
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_32)
+strong_alias (__exp10f, __exp10f_compat)
+compat_symbol (libm, __exp10f_compat, exp10f, GLIBC_2_1)
+#endif
+versioned_symbol (libm, __exp10f, exp10f, GLIBC_2_32)
 
 
 LOCAL_LIBM_ENTRY(__libm_error_region)

sysdeps/ieee754/flt-32/e_exp10f.c

@@ -21,6 +21,8 @@
 #include <stdint.h>
 #include <libm-alias-finite.h>
 #include <libm-alias-float.h>
+#include <shlib-compat.h>
+#include <math-svid-compat.h>
 #include "math_config.h"
 
 /*
@@ -139,7 +141,7 @@ top13 (float x)
 }
 
 float
-__ieee754_exp10f (float x)
+__exp10f (float x)
 {
   uint32_t abstop;
   uint64_t ki, t;
@@ -195,4 +197,16 @@ __ieee754_exp10f (float x)
   y = y * s;
   return (float) y;
 }
+#ifndef __exp10f
+strong_alias (__exp10f, __ieee754_exp10f)
 libm_alias_finite (__ieee754_exp10f, __exp10f)
+/* For architectures that already provided exp10f without SVID support, there
+   is no need to add a new version.  */
+#if !LIBM_SVID_COMPAT
+# define EXP10F_VERSION GLIBC_2_26
+#else
+# define EXP10F_VERSION GLIBC_2_32
+#endif
+versioned_symbol (libm, __exp10f, exp10f, EXP10F_VERSION);
+libm_alias_float_other (__exp10, exp10)
+#endif

sysdeps/m68k/m680x0/fpu/e_exp10f.c

@@ -1,3 +1,8 @@
+#include <libm-alias-float.h>
 #define FUNC __ieee754_exp10f
 #define FUNC_FINITE __exp10f
 #include <e_acosf.c>
+strong_alias (__ieee754_exp10f, __exp10f)
+libm_alias_finite (__ieee754_exp10f, __exp10f)
+versioned_symbol (libm, __exp10f, exp10f, GLIBC_2_32);
+libm_alias_float_other (__ieee754_exp10, exp10)

sysdeps/mach/hurd/i386/libm.abilist

@@ -1089,3 +1089,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/aarch64/libm.abilist

@@ -1053,3 +1053,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/alpha/libm.abilist

@@ -1110,6 +1110,7 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/arm/be/libm.abilist

@@ -470,6 +470,7 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F

sysdeps/unix/sysv/linux/arm/le/libm.abilist

@@ -470,6 +470,7 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F

sysdeps/unix/sysv/linux/hppa/libm.abilist

@@ -781,4 +781,5 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 exp2l F

sysdeps/unix/sysv/linux/i386/libm.abilist

@@ -1096,3 +1096,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/ia64/libm.abilist

@@ -1026,3 +1026,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist

@@ -470,6 +470,7 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F

sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist

@@ -821,3 +821,4 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/microblaze/be/libm.abilist

@@ -782,3 +782,4 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/microblaze/le/libm.abilist

@@ -782,3 +782,4 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/mips/mips32/libm.abilist

@@ -781,4 +781,5 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 exp2l F

sysdeps/unix/sysv/linux/mips/mips64/libm.abilist

@@ -1053,3 +1053,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/nios2/libm.abilist

@@ -782,3 +782,4 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist

@@ -827,6 +827,7 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist

@@ -826,6 +826,7 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libm.abilist

@@ -820,6 +820,7 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libm.abilist

@@ -1214,3 +1214,4 @@ GLIBC_2.32 __ufromfpxieee128 F
 GLIBC_2.32 __y0ieee128 F
 GLIBC_2.32 __y1ieee128 F
 GLIBC_2.32 __ynieee128 F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist

@@ -1054,6 +1054,7 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist

@@ -1054,6 +1054,7 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/sh/be/libm.abilist

@@ -781,4 +781,5 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 exp2l F

sysdeps/unix/sysv/linux/sh/le/libm.abilist

@@ -781,4 +781,5 @@ GLIBC_2.31 totalordermagf32 F
 GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 exp2l F

sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist

@@ -1061,6 +1061,7 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist

@@ -1053,3 +1053,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/x86_64/64/libm.abilist

@@ -1087,3 +1087,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F

sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist

@@ -1087,3 +1087,4 @@ GLIBC_2.31 totalordermagf32x F
 GLIBC_2.31 totalordermagf64 F
 GLIBC_2.31 totalordermagf64x F
 GLIBC_2.31 totalordermagl F
+GLIBC_2.32 exp10f F