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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 <adhemerval.zanella@linaro.org>
36 lines
969 B
C
36 lines
969 B
C
/* s_copysignf.c -- float version of s_copysign.c.
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* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
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*/
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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#if defined (LIBM_SCCS) && ! defined (lint)
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static char rcsid[] = "$NetBSD: s_copysignf.c,v 1.4 1995/05/10 20:46:59 jtc Exp $";
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#endif
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/*
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* copysignf(float x, float y)
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* copysignf(x,y) returns a value with the magnitude of x and
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* with the sign bit of y.
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*/
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#define NO_MATH_REDIRECT
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#include <math.h>
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#include <libm-alias-float.h>
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float
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__copysignf (float x, float y)
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{
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return __builtin_copysignf (x, y);
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}
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libm_alias_float (__copysign, copysign)
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