1 /* Test of splitting a double into fraction and mantissa.
2 Copyright (C) 2012-2013 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/>. */
20 /* [MX] shaded specification in POSIX. */
26 mantissa = FREXP (NAN, &exp);
27 ASSERT (ISNAN (mantissa));
34 mantissa = FREXP (L_(0.0), &exp);
35 ASSERT (mantissa == L_(0.0));
36 ASSERT (!signbit (mantissa));
42 mantissa = FREXP (MINUS_ZERO, &exp);
43 ASSERT (mantissa == L_(0.0));
44 ASSERT (!!signbit (mantissa) == !!signbit (MINUS_ZERO));
52 mantissa = FREXP (INFINITY, &exp);
53 ASSERT (mantissa == INFINITY);
58 mantissa = FREXP (- INFINITY, &exp);
59 ASSERT (mantissa == - INFINITY);