1 /* Return maximum numeric value of X and Y. 2 Copyright (C) 1997-2021 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #include <math.h> 20 #include <math-use-builtins.h> 21 22 FLOAT M_DECL_FUNC(__fmax)23M_DECL_FUNC (__fmax) (FLOAT x, FLOAT y) 24 { 25 #if M_USE_BUILTIN (FMAX) 26 return M_SUF (__builtin_fmax) (x, y); 27 #else 28 if (isgreaterequal (x, y)) 29 return x; 30 else if (isless (x, y)) 31 return y; 32 else if (issignaling (x) || issignaling (y)) 33 return x + y; 34 else 35 return isnan (y) ? x : y; 36 #endif 37 } 38 39 declare_mgen_alias (__fmax, fmax); 40