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