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annotate tests/infinity.h @ 15595:328819af1c02

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Support for MSVC compiler: Avoid division by a literal 0. * lib/math.in.h (NAN): Define through a function call also on MSVC. * m4/frexp.m4 (gl_FUNC_FREXP_WORKS): Divide by 'zero' instead of 0.0. * m4/printf.m4 (gl_PRINTF_INFINITE, gl_PRINTF_DIRECTIVE_A, gl_PRINTF_DIRECTIVE_F, gl_PRINTF_FLAG_ZERO): Likewise. (gl_PRINTF_INFINITE_LONG_DOUBLE): Divide by 'zeroL' instead of 0.0L. * tests/infinity.h: New file. * tests/nan.h (NaNf, NaNd, NaNl): Define through a function call also on MSVC. * tests/test-ceilf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-ceil1.c: Include infinity.h. (main): Use Infinityd. * tests/test-ceill.c: Include infinity.h. (main): Use Infinityl. * tests/test-dprintf-posix.c: Include infinity.h. (test_function): Use Infinityd. * tests/test-floorf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-floor1.c: Include infinity.h. (main): Use Infinityd. * tests/test-floorl.c: Include infinity.h. (main): Use Infinityl. * tests/test-fprintf-posix.c: Include infinity.h. (test_function): Use Infinityd. * tests/test-frexp.c: Include infinity.h. (main): Use Infinityd. * tests/test-frexpl.c: Include infinity.h. (main): Use Infinityl. * tests/test-isfinite.c: Include infinity.h. (test_isfinitef): Use Infinityf. (test_isfinited): Use Infinityd. (test_isfinitel): Use Infinityl. * tests/test-isinf.c: Include infinity.h. (test_isinff): Use Infinityf. (test_isinfd): Use Infinityd. (test_isinfl): Use Infinityl. * tests/test-isnan.c: Include infinity.h. (test_float): Use Infinityf. (test_double): Use Infinityd. (test_long_double): Use Infinityl. * tests/test-isnanf.h: Include infinity.h. (main): Use Infinityf. * tests/test-isnand.h: Include infinity.h. (main): Use Infinityd. * tests/test-isnanl.h: Include infinity.h. (main): Use Infinityl. * tests/test-ldexpl.c: Include infinity.h. (main): Use Infinityl. * tests/test-printf-posix.h: Include infinity.h. (test_function): Use Infinityd. * tests/test-roundf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-round1.c: Include infinity.h. (main): Use Infinityd. * tests/test-roundl.c: Include infinity.h. (main): Use Infinityl. * tests/test-signbit.c: Include infinity.h. (test_signbitf): Use Infinityf. (test_signbitd): Use Infinityd. (test_signbitl): Use Infinityl. * tests/test-snprintf-posix.h: Include infinity.h. (test_function): Use Infinityd, Infinityl. * tests/test-sprintf-posix.h: Include infinity.h. (test_function): Use Infinityd, Infinityl. * tests/test-truncf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-trunc1.c: Include infinity.h. (main): Use Infinityd. * tests/test-truncl.c: Include infinity.h. (main): Use Infinityl. * tests/test-vasnprintf-posix.c: Include infinity.h. (test_function): Use Infinityd, Infinityl. * tests/test-vasprintf-posix.c: Include infinity.h. (test_function): Use Infinityd, Infinityl. * modules/ceilf-tests (Files): Add tests/infinity.h. * modules/ceil-tests (Files): Likewise. * modules/ceill-tests (Files): Likewise. * modules/dprintf-posix-tests (Files): Likewise. * modules/floorf-tests (Files): Likewise. * modules/floor-tests (Files): Likewise. * modules/floorl-tests (Files): Likewise. * modules/fprintf-posix-tests (Files): Likewise. * modules/frexp-tests (Files): Likewise. * modules/frexp-nolibm-tests (Files): Likewise. * modules/frexpl-tests (Files): Likewise. * modules/frexpl-nolibm-tests (Files): Likewise. * modules/isfinite-tests (Files): Likewise. * modules/isinf-tests (Files): Likewise. * modules/isnan-tests (Files): Likewise. * modules/isnanf-tests (Files): Likewise. * modules/isnanf-nolibm-tests (Files): Likewise. * modules/isnand-tests (Files): Likewise. * modules/isnand-nolibm-tests (Files): Likewise. * modules/isnanl-tests (Files): Likewise. * modules/isnanl-nolibm-tests (Files): Likewise. * modules/ldexpl-tests (Files): Likewise. * modules/printf-posix-tests (Files): Likewise. * modules/roundf-tests (Files): Likewise. * modules/round-tests (Files): Likewise. * modules/roundl-tests (Files): Likewise. * modules/signbit-tests (Files): Likewise. * modules/snprintf-posix-tests (Files): Likewise. * modules/sprintf-posix-tests (Files): Likewise. * modules/truncf-tests (Files): Likewise. * modules/trunc-tests (Files): Likewise. * modules/truncl-tests (Files): Likewise. * modules/vasnprintf-posix-tests (Files): Likewise. * modules/vasprintf-posix-tests (Files): Likewise. * modules/vdprintf-posix-tests (Files): Likewise. * modules/vfprintf-posix-tests (Files): Likewise. * modules/vprintf-posix-tests (Files): Likewise. * modules/vsnprintf-posix-tests (Files): Likewise. * modules/vsprintf-posix-tests (Files): Likewise. * modules/xprintf-posix-tests (Files): Likewise.
author Bruno Haible <bruno@clisp.org>
date Sun, 11 Sep 2011 17:29:11 +0200
parents
children 8250f2777afc
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1 /* Macros for infinity.
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2 Copyright (C) 2011 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
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18 /* Infinityf () returns a 'float' +Infinity. */
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19
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20 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f. */
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21 #if defined _MSC_VER
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22 static float
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23 Infinityf ()
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24 {
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25 static float zero = 0.0f;
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26 return 1.0f / zero;
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27 }
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28 #else
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29 # define Infinityf() (1.0f / 0.0f)
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30 #endif
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31
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32
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33 /* Infinityd () returns a 'double' +Infinity. */
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34
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35 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. */
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36 #if defined _MSC_VER
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37 static double
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38 Infinityd ()
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39 {
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40 static double zero = 0.0;
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41 return 1.0 / zero;
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42 }
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43 #else
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44 # define Infinityd() (1.0 / 0.0)
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45 #endif
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46
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47
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48 /* Infinityl () returns a 'long double' +Infinity. */
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49
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50 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L. */
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51 #if defined _MSC_VER
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52 static double
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53 Infinityl ()
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54 {
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55 static long double zero = 0.0L;
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56 return 1.0L / zero;
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57 }
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58 #else
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59 # define Infinityl() (1.0L / 0.0L)
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60 #endif