1 /* Return maximum number of X and Y.
2 Copyright (C) 1997-2022 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
21 FLOAT
M_DECL_FUNC(__fmaximum_num)22 M_DECL_FUNC (__fmaximum_num) (FLOAT x, FLOAT y)
23 {
24 if (isgreater (x, y))
25 return x;
26 else if (isless (x, y))
27 return y;
28 else if (x == y)
29 return (M_COPYSIGN (1, x) >= M_COPYSIGN (1, y) ? x : y);
30 else
31 return isnan (y) ? (isnan (x) ? x + y : x) : y;
32 }
33 declare_mgen_alias (__fmaximum_num, fmaximum_num);
34