1151497Sru/* Copyright (C) 2005 Free Software Foundation, Inc. 2151497SruThis file is part of the GNU C Library. 3151497Sru 4151497SruThe GNU C Library is free software; you can redistribute it and/or 5151497Srumodify it under the terms of the GNU Library General Public License as 6151497Srupublished by the Free Software Foundation; either version 2 of the 7151497SruLicense, or (at your option) any later version. 8151497Sru 9151497SruThe GNU C Library is distributed in the hope that it will be useful, 10151497Srubut WITHOUT ANY WARRANTY; without even the implied warranty of 11151497SruMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12151497SruLibrary General Public License for more details. 13151497Sru 14151497SruYou should have received a copy of the GNU Library General Public 15151497SruLicense along with the GNU C Library; see the file COPYING.LIB. If 16151497Srunot, write to the Free Software Foundation, Inc., 675 Mass Ave, 17151497SruCambridge, MA 02139, USA. */ 18151497Sru 19151497Sru#ifdef HAVE_CONFIG_H 20151497Sru#include <config.h> 21151497Sru#endif 22151497Sru 23151497Sru#include <math.h> 24151497Sru 25151497Sru#ifdef NEED_DECLARATION_HYPOT 26151497Sru double hypot(double, double); 27151497Sru#endif /* NEED_DECLARATION_HYPOT */ 28151497Sru 29151497Srudouble groff_hypot(double x, double y) 30151497Sru{ 31151497Sru double result = hypot(x, y); 32151497Sru 33151497Sru#ifdef __INTERIX 34151497Sru /* hypot() on Interix is broken */ 35151497Sru if (isnan(result) && !isnan(x) && !isnan(y)) 36151497Sru return 0.0; 37151497Sru#endif 38151497Sru 39151497Sru return result; 40151497Sru} 41