Retro68/gcc/libjava/classpath/native/fdlibm/s_copysign.c
Wolfgang Thaller aaf905ce07 add gcc 4.70
2012-03-28 01:13:14 +02:00

38 lines
873 B
C

/* @(#)s_copysign.c 1.3 95/01/18 */
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunSoft, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/*
* copysign(double x, double y)
* copysign(x,y) returns a value with the magnitude of x and
* with the sign bit of y.
*/
#include "fdlibm.h"
#ifndef _DOUBLE_IS_32BITS
#ifdef __STDC__
double copysign(double x, double y)
#else
double copysign(x,y)
double x,y;
#endif
{
uint32_t hx, hy;
GET_HIGH_WORD(hx, x);
GET_HIGH_WORD(hy, y);
SET_HIGH_WORD(x, (hx&0x7fffffff)|(hy&0x80000000));
return x;
}
#endif /* _DOUBLE_IS_32BITS */