vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
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s_copysign.c (885B)

      1 /* @(#)s_copysign.c 5.1 93/09/24 */
      2 /*
      3  * ====================================================
      4  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
      5  *
      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
      9  * is preserved.
     10  * ====================================================
     11  */
     12 
     13 #ifndef lint
     14 static char rcsid[] = "$FreeBSD: src/lib/msun/src/s_copysign.c,v 1.9 2003/07/23 04:53:46 peter Exp $";
     15 #endif
     16 
     17 /*
     18  * copysign(double x, double y)
     19  * copysign(x,y) returns a value with the magnitude of x and
     20  * with the sign bit of y.
     21  */
     22 
     23 #include "math.h"
     24 #include "math_private.h"
     25 
     26 double
     27 copysign(double x, double y)
     28 {
     29 	u_int32_t hx,hy;
     30 	GET_HIGH_WORD(hx,x);
     31 	GET_HIGH_WORD(hy,y);
     32 	SET_HIGH_WORD(x,(hx&0x7fffffff)|(hy&0x80000000));
     33         return x;
     34 }