annotate tests/test-ceil-ieee.c @ 16426:da3714005967

ceil-ieee tests: More tests. * tests/test-ceil-ieee.c: Include isnand-nolibm.h, infinity.h, nan.h. (main): Add tests for [MX] shaded specification in POSIX. * modules/ceil-ieee-tests (Files): Add tests/infinity.h, tests/nan.h. (Depends-on): Add isnand-nolibm.
author Bruno Haible <bruno@clisp.org>
date Sun, 26 Feb 2012 14:25:50 +0100
parents 8250f2777afc
children e542fd46ad6f
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1 /* Test of rounding towards positive infinity.
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2 Copyright (C) 2010-2012 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16
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17 #include <config.h>
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18
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19 #include <math.h>
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20
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21 #include "isnand-nolibm.h"
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22 #include "minus-zero.h"
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23 #include "infinity.h"
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24 #include "nan.h"
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25 #include "macros.h"
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26
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27 int
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28 main ()
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29 {
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30 /* See IEEE 754, section 6.3:
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31 "the sign of the result of the round floating-point number to
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32 integral value operation is the sign of the operand. These rules
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33 shall apply even when operands or results are zero or infinite." */
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34
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35 /* Zero. */
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36 ASSERT (!signbit (ceil (0.0)));
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37 ASSERT (!!signbit (ceil (minus_zerod)) == !!signbit (minus_zerod));
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38 /* Positive numbers. */
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39 ASSERT (!signbit (ceil (0.3)));
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40 ASSERT (!signbit (ceil (0.7)));
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41 /* Negative numbers. */
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42 ASSERT (!!signbit (ceil (-0.3)) == !!signbit (minus_zerod));
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43 ASSERT (!!signbit (ceil (-0.7)) == !!signbit (minus_zerod));
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44
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45 /* [MX] shaded specification in POSIX. */
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46
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47 /* NaN. */
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48 ASSERT (isnand (ceil (NaNd ())));
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49 /* Infinity. */
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50 ASSERT (ceil (Infinityd ()) == Infinityd ());
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51 ASSERT (ceil (- Infinityd ()) == - Infinityd ());
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52
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53 return 0;
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54 }