1/*	$NetBSD: hypot.cpp,v 1.1.1.1 2016/01/13 18:41:48 christos Exp $	*/
2
3/* Copyright (C) 2005 Free Software Foundation, Inc.
4This file is part of the GNU C Library.
5
6The GNU C Library is free software; you can redistribute it and/or
7modify it under the terms of the GNU Library General Public License as
8published by the Free Software Foundation; either version 2 of the
9License, or (at your option) any later version.
10
11The GNU C Library is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14Library General Public License for more details.
15
16You should have received a copy of the GNU Library General Public
17License along with the GNU C Library; see the file COPYING.LIB.  If
18not, write to the Free Software Foundation, Inc., 675 Mass Ave,
19Cambridge, MA 02139, USA.  */
20
21#ifdef HAVE_CONFIG_H
22#include <config.h>
23#endif
24
25#include <math.h>
26
27#ifdef NEED_DECLARATION_HYPOT
28  double hypot(double, double);
29#endif /* NEED_DECLARATION_HYPOT */
30
31double groff_hypot(double x, double y)
32{
33  double result = hypot(x, y);
34
35#ifdef __INTERIX
36  /* hypot() on Interix is broken */
37  if (isnan(result) && !isnan(x) && !isnan(y))
38    return 0.0;
39#endif
40
41  return result;
42}
43