math/w_hypotf.c

   1 /* w_hypotf.c -- float version of w_hypot.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 #if defined(LIBM_SCCS) && !defined(lint)
  17 static char rcsid[] = "$NetBSD: w_hypotf.c,v 1.3 1995/05/10 20:49:09 jtc Exp $";
  18 #endif
  19
  20 /*
  21  * wrapper hypotf(x,y)
  22  */
  23
  24 #include <math.h>
  25 #include "math_private.h"
  26
  27
  28 #ifdef __STDC__
  29         float __hypotf(float x, float y)        /* wrapper hypotf */
  30 #else
  31         float __hypotf(x,y)             /* wrapper hypotf */
  32         float x,y;
  33 #endif
  34 {
  35 #ifdef _IEEE_LIBM
  36         return __ieee754_hypotf(x,y);
  37 #else
  38         float z;
  39         z = __ieee754_hypotf(x,y);
  40         if(_LIB_VERSION == _IEEE_) return z;
  41         if((!__finitef(z))&&__finitef(x)&&__finitef(y))
  42             /* hypot overflow */
  43             return (float)__kernel_standard((double)x,(double)y,104);
  44         else
  45             return z;
  46 #endif
  47 }
  48 weak_alias (__hypotf, hypotf)