1  /* s_finitef.c -- float version of s_finite.c.
       2   */
       3  
       4  /*
       5   * ====================================================
       6   * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
       7   *
       8   * Developed at SunPro, a Sun Microsystems, Inc. business.
       9   * Permission to use, copy, modify, and distribute this
      10   * software is freely granted, provided that this notice
      11   * is preserved.
      12   * ====================================================
      13   */
      14  
      15  #if defined(LIBM_SCCS) && !defined(lint)
      16  static char rcsid[] = "$NetBSD: s_finitef.c,v 1.4 1995/05/10 20:47:18 jtc Exp $";
      17  #endif
      18  
      19  /*
      20   * finitef(x) returns 1 is x is finite, else 0;
      21   * no branching!
      22   */
      23  
      24  #include <math.h>
      25  #include <math_private.h>
      26  
      27  #undef __finitef
      28  
      29  #ifndef FINITEF
      30  # define FINITEF __finitef
      31  #endif
      32  
      33  int FINITEF(float x)
      34  {
      35  	int32_t ix;
      36  	GET_FLOAT_WORD(ix,x);
      37  	return (int)((uint32_t)((ix&0x7f800000)-0x7f800000)>>31);
      38  }
      39  hidden_def (__finitef)
      40  weak_alias (__finitef, finitef)