1 /* Test of <math.h> substitute.
2 Copyright (C) 2007-2013 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program 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 General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
24 # error NAN should be defined
29 # error HUGE_VALF should be defined
34 # error HUGE_VAL should be defined
39 # error HUGE_VALL should be defined
44 # error FP_ILOGB0 should be defined
49 # error FP_ILOGBNAN should be defined
58 /* Check that NAN expands into a constant expression. */
62 /* Compare two numbers with ==.
63 This is a separate function because IRIX 6.5 "cc -O" miscompiles an
66 numeric_equalf (float x, float y)
71 numeric_equald (double x, double y)
76 numeric_equall (long double x, long double y)
86 ASSERT (!numeric_equald (d, d));
89 ASSERT (numeric_equald (d, 1.0 / zero));
91 ASSERT (numeric_equalf (HUGE_VALF, HUGE_VALF + HUGE_VALF));
93 ASSERT (numeric_equald (HUGE_VAL, HUGE_VAL + HUGE_VAL));
95 ASSERT (numeric_equall (HUGE_VALL, HUGE_VALL + HUGE_VALL));
97 /* Check the value of FP_ILOGB0. */
98 ASSERT (FP_ILOGB0 == INT_MIN || FP_ILOGB0 == - INT_MAX);
100 /* Check the value of FP_ILOGBNAN. */
101 ASSERT (FP_ILOGBNAN == INT_MIN || FP_ILOGBNAN == INT_MAX);