1 2 /* @(#)s_copysign.c 1.3 95/01/18 */ 3 /* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunSoft, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 */ 13 14 /* 15 * ieee_copysign(double x, double y) 16 * ieee_copysign(x,y) returns a value with the magnitude of x and 17 * with the sign bit of y. 18 */ 19 20 #include "fdlibm.h" 21 22 #ifdef __STDC__ 23 double ieee_copysign(double x, double y) 24 #else 25 double ieee_copysign(x,y) 26 double x,y; 27 #endif 28 { 29 __HI(x) = (__HI(x)&0x7fffffff)|(__HI(y)&0x80000000); 30 return x; 31 } 32
