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

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• Hash : b72938c8
  Author :
  Date : 2015-04-20T12:22:44
  

  Windows: Always set the system timer resolution to 1ms by default.
  
  An existing hint lets apps that don't need the timer resolution changed avoid
  this, to save battery, etc, but this fixes several problems in timing, audio
  callbacks not firing fast enough, etc.
  
  Fixes Bugzilla #2944.
  

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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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