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39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
/* s_copysignl.c -- long double version of s_copysign.c.
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* Conversion to long double by Ulrich Drepper,
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* Cygnus Support, drepper@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: $";
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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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#include <math.h>
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#include <math_private.h>
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long double __copysignl(long double x, long double y)
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{
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u_int32_t es1,es2;
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GET_LDOUBLE_EXP(es1,x);
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GET_LDOUBLE_EXP(es2,y);
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SET_LDOUBLE_EXP(x,(es1&0x7fff)|(es2&0x8000));
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return x;
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}
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weak_alias (__copysignl, copysignl)
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