From f818afdd3b29d7eef2010448457c9f5c16e684cd Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Wed, 11 Dec 2019 15:09:24 +0100 Subject: Use GCC builtins for copysign functions if desired. This patch is always using the corresponding GCC builtin for copysignf, copysign, and is using the builtin for copysignl, copysignf128 if the USE_FUNCTION_BUILTIN macros are defined to one in math-use-builtins.h. Altough the long double version is enabled by default we still need the macro and the alternative implementation as the _Float128 version of the builtin is not available with all supported GCC versions. Reviewed-by: Adhemerval Zanella --- sysdeps/generic/math-use-builtins.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'sysdeps/generic/math-use-builtins.h') diff --git a/sysdeps/generic/math-use-builtins.h b/sysdeps/generic/math-use-builtins.h index 34ca438..770b54c 100644 --- a/sysdeps/generic/math-use-builtins.h +++ b/sysdeps/generic/math-use-builtins.h @@ -19,6 +19,8 @@ #ifndef MATH_USE_BUILTINS_H #define MATH_USE_BUILTINS_H 1 +#include /* For __GNUC_PREREQ. */ + /* Define these macros to 1 to use __builtin_xyz instead of the generic implementation. */ #define USE_NEARBYINT_BUILTIN 0 @@ -51,4 +53,11 @@ #define USE_ROUNDL_BUILTIN 0 #define USE_ROUNDF128_BUILTIN 0 +#define USE_COPYSIGNL_BUILTIN 1 +#if __GNUC_PREREQ (7, 0) +# define USE_COPYSIGNF128_BUILTIN 1 +#else +# define USE_COPYSIGNF128_BUILTIN 0 +#endif + #endif /* math-use-builtins.h */ -- cgit v1.1