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51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/* sf_copysign.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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/*
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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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#include "fdlibm.h"
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#ifdef __STDC__
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float copysignf(float x, float y)
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#else
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float copysignf(x,y)
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float x,y;
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#endif
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{
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__uint32_t ix,iy;
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GET_FLOAT_WORD(ix,x);
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GET_FLOAT_WORD(iy,y);
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SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
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return x;
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}
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#ifdef _DOUBLE_IS_32BITS
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#ifdef __STDC__
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double copysign(double x, double y)
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#else
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double copysign(x,y)
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double x,y;
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#endif
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{
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return (double) copysignf((float) x, (float) y);
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}
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#endif /* defined(_DOUBLE_IS_32BITS) */
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