kc3-lang/SDL/src/libm/s_copysign.c

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• Hash : 3dcb451f
  Author :
  Date : 2014-04-09T21:29:19
  

  Added a README file regarding WinRT support
  
  To note, this file is currently formatted with CRLF line endings, rather than
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• src/libm/s_copysign.c

• /* @(#)s_copysign.c 5.1 93/09/24 */
  /*
   * ====================================================
   * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   *
   * Developed at SunPro, a Sun Microsystems, Inc. business.
   * Permission to use, copy, modify, and distribute this
   * software is freely granted, provided that this notice
   * is preserved.
   * ====================================================
   */
  
  #if defined(LIBM_SCCS) && !defined(lint)
  static const char rcsid[] =
      "$NetBSD: s_copysign.c,v 1.8 1995/05/10 20:46:57 jtc Exp $";
  #endif
  
  /*
   * copysign(double x, double y)
   * copysign(x,y) returns a value with the magnitude of x and
   * with the sign bit of y.
   */
  
  #include "math_libm.h"
  #include "math_private.h"
  
  libm_hidden_proto(copysign)
  #ifdef __STDC__
       double copysign(double x, double y)
  #else
       double copysign(x, y)
       double x, y;
  #endif
  {
      u_int32_t hx, hy;
      GET_HIGH_WORD(hx, x);
      GET_HIGH_WORD(hy, y);
      SET_HIGH_WORD(x, (hx & 0x7fffffff) | (hy & 0x80000000));
      return x;
  }
  
  libm_hidden_def(copysign)
  

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