forked from KolibriOS/kolibrios
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/* sf_copysign.c -- float version of s_copysign.c.
|
|
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
|
|
*/
|
|
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
/*
|
|
* copysignf(float x, float y)
|
|
* copysignf(x,y) returns a value with the magnitude of x and
|
|
* with the sign bit of y.
|
|
*/
|
|
|
|
#include "fdlibm.h"
|
|
|
|
#ifdef __STDC__
|
|
float copysignf(float x, float y)
|
|
#else
|
|
float copysignf(x,y)
|
|
float x,y;
|
|
#endif
|
|
{
|
|
__uint32_t ix,iy;
|
|
GET_FLOAT_WORD(ix,x);
|
|
GET_FLOAT_WORD(iy,y);
|
|
SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
|
|
return x;
|
|
}
|
|
|
|
#ifdef _DOUBLE_IS_32BITS
|
|
|
|
#ifdef __STDC__
|
|
double copysign(double x, double y)
|
|
#else
|
|
double copysign(x,y)
|
|
double x,y;
|
|
#endif
|
|
{
|
|
return (double) copysignf((float) x, (float) y);
|
|
}
|
|
|
|
#endif /* defined(_DOUBLE_IS_32BITS) */
|