math: Add feclearexcept internal alias

To avoid linknamespace issues on old standards. It is required if the fallback fma implementation is used if/when it is also used internally for other implementation. Reviewed-by: DJ Delorie <dj@redhat.com>
2025-12-20 01:12:17 +08:00 · 2025-08-25 13:38:26 -03:00
parent 1fdb73fb3c
commit 2eb8836de7
20 changed files with 44 additions and 12 deletions
--- a/include/fenv.h
+++ b/include/fenv.h
@@ -33,6 +33,7 @@ libm_hidden_proto (feupdateenv)
 libm_hidden_proto (__feupdateenv)
 libm_hidden_proto (fetestexcept)
 libm_hidden_proto (feclearexcept)
+libm_hidden_proto (__feclearexcept)

 /* Rounding mode context.  This allows functions to set/restore rounding mode
   only when the desired rounding mode is different from the current rounding
--- a/math/fclrexcpt.c
+++ b/math/fclrexcpt.c
@@ -25,6 +25,7 @@ __feclearexcept (int excepts)
  /* This always fails unless nothing needs to be done.  */
  return (excepts != 0);
 }
+libm_hidden_def (__feclearexcept)
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
 strong_alias (__feclearexcept, __old_feclearexcept)
 compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
--- a/sysdeps/aarch64/fpu/fclrexcpt.c
+++ b/sysdeps/aarch64/fpu/fclrexcpt.c
@@ -20,7 +20,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  fpu_fpsr_t fpsr;
  fpu_fpsr_t fpsr_new;
@@ -35,4 +35,6 @@ feclearexcept (int excepts)

  return 0;
 }
+weak_alias (__feclearexcept, feclearexcept)
+libm_hidden_def (__feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/alpha/fpu/fclrexcpt.c
+++ b/sysdeps/alpha/fpu/fclrexcpt.c
@@ -35,6 +35,7 @@ __feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)

 #include <shlib-compat.h>
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
--- a/sysdeps/arc/fpu/fclrexcpt.c
+++ b/sysdeps/arc/fpu/fclrexcpt.c
@@ -20,7 +20,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  unsigned int fpsr;

@@ -33,4 +33,6 @@ feclearexcept (int excepts)

  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/arm/fclrexcpt.c
+++ b/sysdeps/arm/fclrexcpt.c
@@ -22,7 +22,7 @@


 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  fpu_control_t fpscr, new_fpscr;

@@ -40,4 +40,6 @@ feclearexcept (int excepts)

  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/csky/fpu/fclrexcpt.c
+++ b/sysdeps/csky/fpu/fclrexcpt.c
@@ -21,7 +21,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  int fpsr;

@@ -39,4 +39,6 @@ feclearexcept (int excepts)

  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/hppa/fpu/fclrexcpt.c
+++ b/sysdeps/hppa/fpu/fclrexcpt.c
@@ -19,7 +19,7 @@
 #include <fenv.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  union { unsigned long long l; unsigned int sw[2]; } s;

@@ -32,4 +32,6 @@ feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/i386/fpu/fclrexcpt.c
+++ b/sysdeps/i386/fpu/fclrexcpt.c
@@ -56,6 +56,7 @@ __feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)

 #include <shlib-compat.h>
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
--- a/sysdeps/loongarch/fpu/fclrexcpt.c
+++ b/sysdeps/loongarch/fpu/fclrexcpt.c
@@ -21,7 +21,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  int cw;

@@ -43,4 +43,6 @@ feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/m68k/fpu/fclrexcpt.c
+++ b/sysdeps/m68k/fpu/fclrexcpt.c
@@ -38,6 +38,7 @@ __feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)

 #include <shlib-compat.h>
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
--- a/sysdeps/mips/fpu/fclrexcpt.c
+++ b/sysdeps/mips/fpu/fclrexcpt.c
@@ -21,7 +21,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  int cw;

@@ -43,4 +43,6 @@ feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/or1k/fpu/fclrexcpt.c
+++ b/sysdeps/or1k/fpu/fclrexcpt.c
@@ -21,7 +21,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  fpu_control_t cw;
  fpu_control_t cw_new;
@@ -41,4 +41,6 @@ feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/powerpc/fpu/fclrexcpt.c
+++ b/sysdeps/powerpc/fpu/fclrexcpt.c
@@ -38,6 +38,7 @@ __feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)

 #include <shlib-compat.h>
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
--- a/sysdeps/powerpc/nofpu/fclrexcpt.c
+++ b/sysdeps/powerpc/nofpu/fclrexcpt.c
@@ -26,6 +26,7 @@ __feclearexcept (int x)
  SIM_SET_GLOBAL (__sim_exceptions_global, __sim_exceptions_thread);
  return 0;
 }
+libm_hidden_def (__feclearexcept)

 #include <shlib-compat.h>
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
--- a/sysdeps/riscv/rvf/fclrexcpt.c
+++ b/sysdeps/riscv/rvf/fclrexcpt.c
@@ -20,9 +20,11 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  asm volatile ("csrc fflags, %0" : : "r" (excepts));
  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/s390/fpu/fclrexcpt.c
+++ b/sysdeps/s390/fpu/fclrexcpt.c
@@ -20,7 +20,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  fexcept_t temp;

@@ -42,4 +42,6 @@ feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/sh/sh4/fpu/fclrexcpt.c
+++ b/sysdeps/sh/sh4/fpu/fclrexcpt.c
@@ -20,7 +20,7 @@
 #include <fpu_control.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  fpu_control_t cw;

@@ -38,4 +38,6 @@ feclearexcept (int excepts)

  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)
--- a/sysdeps/sparc/fpu/fclrexcpt.c
+++ b/sysdeps/sparc/fpu/fclrexcpt.c
@@ -34,6 +34,7 @@ __feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)

 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
 strong_alias (__feclearexcept, __old_feclearexcept)
--- a/sysdeps/x86_64/fpu/fclrexcpt.c
+++ b/sysdeps/x86_64/fpu/fclrexcpt.c
@@ -19,7 +19,7 @@
 #include <fenv.h>

 int
-feclearexcept (int excepts)
+__feclearexcept (int excepts)
 {
  fenv_t temp;
  unsigned int mxcsr;
@@ -49,4 +49,6 @@ feclearexcept (int excepts)
  /* Success.  */
  return 0;
 }
+libm_hidden_def (__feclearexcept)
+weak_alias (__feclearexcept, feclearexcept)
 libm_hidden_def (feclearexcept)