1 
   2 /*
   3  * Copyright (c) 1998, 2001, Oracle and/or its affiliates. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.  Oracle designates this
   9  * particular file as subject to the "Classpath" exception as provided
  10  * by Oracle in the LICENSE file that accompanied this code.
  11  *
  12  * This code is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * version 2 for more details (a copy is included in the LICENSE file that
  16  * accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License version
  19  * 2 along with this work; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  21  *
  22  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  23  * or visit www.oracle.com if you need additional information or have any
  24  * questions.
  25  */
  26 
  27 /*
  28  * wrapper hypot(x,y)
  29  */
  30 
  31 #include "fdlibm.h"
  32 
  33 
  34 #ifdef __STDC__
  35         double hypot(double x, double y)/* wrapper hypot */
  36 #else
  37         double hypot(x,y)               /* wrapper hypot */
  38         double x,y;
  39 #endif
  40 {
  41 #ifdef _IEEE_LIBM
  42         return __ieee754_hypot(x,y);
  43 #else
  44         double z;
  45         z = __ieee754_hypot(x,y);
  46         if(_LIB_VERSION == _IEEE_) return z;
  47         if((!finite(z))&&finite(x)&&finite(y))
  48             return __kernel_standard(x,y,4); /* hypot overflow */
  49         else
  50             return z;
  51 #endif
  52 }