From fa7fa397d3090a4d7883439140d50ae1f6f8617b Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Fri, 1 Apr 2022 17:01:22 -0300 Subject: math: Do not use __builtin_isnan on clang It does not handle pseudo normal numbers. --- math/math.h | 3 +-- sysdeps/ieee754/float128/float128_private.h | 2 +- sysdeps/ieee754/float128/s_isnanf128.c | 4 ++++ 3 files changed, 6 insertions(+), 3 deletions(-) diff --git a/math/math.h b/math/math.h index 97e4df863e..59caf4b7e6 100644 --- a/math/math.h +++ b/math/math.h @@ -1004,8 +1004,7 @@ enum /* Return nonzero value if X is a NaN. We could use `fpclassify' but we already have this functions `__isnan' and it is faster. */ -# if (__GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__) \ - || __glibc_clang_prereq (2,8) +# if (__GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__) # define isnan(x) __builtin_isnan (x) # else # define isnan(x) __MATH_TG ((x), __isnan, (x)) diff --git a/sysdeps/ieee754/float128/float128_private.h b/sysdeps/ieee754/float128/float128_private.h index 38a8bdd0fe..672bf3cccf 100644 --- a/sysdeps/ieee754/float128/float128_private.h +++ b/sysdeps/ieee754/float128/float128_private.h @@ -352,7 +352,7 @@ #define frexpl frexpf128 #define getpayloadl getpayloadf128 #define isinfl isinff128_do_not_use -#define isnanl isnanf128_do_not_use +#define isnanl isnanf128 #define ldexpl ldexpf128 #define llrintl llrintf128 #define llroundl llroundf128 diff --git a/sysdeps/ieee754/float128/s_isnanf128.c b/sysdeps/ieee754/float128/s_isnanf128.c index 59f71533ce..b73a4e80d7 100644 --- a/sysdeps/ieee754/float128/s_isnanf128.c +++ b/sysdeps/ieee754/float128/s_isnanf128.c @@ -11,7 +11,11 @@ #include "../ldbl-128/s_isnanl.c" #if !IS_IN (libm) #include +#ifdef SHARED hidden_ver (__isnanf128_impl, __isnanf128) +#else +strong_alias (__isnanf128_impl, __isnanf128) +#endif _weak_alias (__isnanf128_impl, isnanl) versioned_symbol (libc, __isnanf128_impl, __isnanf128, GLIBC_2_34); #if (SHLIB_COMPAT (libc, FLOAT128_VERSION_M, GLIBC_2_34)) -- cgit 1.4.1