47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* s_copysignl.c -- long double version of s_copysign.c.
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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: $";
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#endif
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/*
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* copysignl(long double x, long double y)
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* copysignl(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 <math_private.h>
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#include <libm-alias-ldouble.h>
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#include <math-use-builtins.h>
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_Float128
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__copysignl (_Float128 x, _Float128 y)
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{
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#if USE_COPYSIGNL_BUILTIN
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return __builtin_copysignl (x, y);
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#else
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/* Use generic implementation. */
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uint64_t hx, hy;
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GET_LDOUBLE_MSW64 (hx, x);
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GET_LDOUBLE_MSW64 (hy, y);
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SET_LDOUBLE_MSW64 (x, (hx & 0x7fffffffffffffffULL)
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| (hy & 0x8000000000000000ULL));
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return x;
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#endif /* ! USE_COPYSIGNL_BUILTIN */
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}
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libm_alias_ldouble (__copysign, copysign)
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