1 /* @(#)s_copysign.c 5.1 93/09/24 */
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
10 * ====================================================
14 * copysign(double x, double y)
15 * copysign(x,y) returns a value with the magnitude of x and
16 * with the sign bit of y.
22 #include "math_private.h"
25 copysign(double x, double y)
30 SET_HIGH_WORD(x,(hx&0x7fffffff)|(hy&0x80000000));
34 #if LDBL_MANT_DIG == DBL_MANT_DIG
35 __strong_alias(copysignl, copysign);
36 #endif /* LDBL_MANT_DIG == DBL_MANT_DIG */