1 /* Test for positive or negative infinity. 2 Copyright (C) 2007-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 3 of the 7 License, or (at your option) any later version. 8 9 This file is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 /* Written by Ben Pfaff <blp@gnu.org>, 2008. */ 18 19 #include <config.h> 20 21 #include <float.h> 22 23 int 24 gl_isinff (float x) /* */ 25 { 26 return x < -FLT_MAX || x > FLT_MAX; 27 } 28 29 int 30 gl_isinfd (double x) /* */ 31 { 32 return x < -DBL_MAX || x > DBL_MAX; 33 } 34 35 int 36 gl_isinfl (long double x) /* */ 37 { 38 return x < -LDBL_MAX || x > LDBL_MAX; 39 }