root/lib/math/s_copysignf.c

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DEFINITIONS

This source file includes following definitions.
  1. copysignf

   1 /* s_copysignf.c -- float version of s_copysign.c.
   2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
   3  */
   4 
   5 /*
   6  * ====================================================
   7  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   8  *
   9  * Developed at SunPro, a Sun Microsystems, Inc. business.
  10  * Permission to use, copy, modify, and distribute this
  11  * software is freely granted, provided that this notice
  12  * is preserved.
  13  * ====================================================
  14  */
  15 
  16 /*
  17  * copysignf(float x, float y)
  18  * copysignf(x,y) returns a value with the magnitude of x and
  19  * with the sign bit of y.
  20  */
  21 
  22 #include "fdlibm.h"
  23 
  24 float copysignf(float x, float y)
  25 {
  26         unsigned int ix,iy;
  27         GET_FLOAT_WORD(ix,x);
  28         GET_FLOAT_WORD(iy,y);
  29         SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
  30         return x;
  31 }

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