libjava/classpath/native/fdlibm/w_hypot.c

   1
   2 /* @(#)w_hypot.c 1.3 95/01/18 */
   3 /*
   4  * ====================================================
   5  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   6  *
   7  * Developed at SunSoft, a Sun Microsystems, Inc. business.
   8  * Permission to use, copy, modify, and distribute this
   9  * software is freely granted, provided that this notice
  10  * is preserved.
  11  * ====================================================
  12  */
  13
  14 /*
  15  * wrapper hypot(x,y)
  16  */
  17
  18 #include "fdlibm.h"
  19
  20
  21 #ifdef __STDC__
  22         double hypot(double x, double y)/* wrapper hypot */
  23 #else
  24         double hypot(x,y)               /* wrapper hypot */
  25         double x,y;
  26 #endif
  27 {
  28 #ifdef _IEEE_LIBM
  29         return __ieee754_hypot(x,y);
  30 #else
  31         double z;
  32         z = __ieee754_hypot(x,y);
  33         if(_LIB_VERSION == _IEEE_) return z;
  34         if((!finite(z))&&finite(x)&&finite(y))
  35             return __kernel_standard(x,y,4); /* hypot overflow */
  36         else
  37             return z;
  38 #endif
  39 }