## Mercurial > hg > octave-lojdl > gnulib-hg

### view tests/test-round-ieee.c @ 16432:56e33fed83b4

Find changesets by keywords (author, files, the commit message), revision
number or hash, or revset expression.

round-ieee tests: More tests.
* tests/test-round-ieee.c: Include isnand-nolibm.h, infinity.h, nan.h.
(main): Add tests for [MX] shaded specification in POSIX.
* modules/round-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 14:27:32 +0100 |

parents | bb182ee4a09d |

children | e542fd46ad6f |

line wrap: on

line source

/* Test of rounding to nearest, breaking ties away from zero. Copyright (C) 2010-2012 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #include <math.h> #include "isnand-nolibm.h" #include "minus-zero.h" #include "infinity.h" #include "nan.h" #include "macros.h" int main () { /* See IEEE 754, section 6.3: "the sign of the result of the round floating-point number to integral value operation is the sign of the operand. These rules shall apply even when operands or results are zero or infinite." */ /* Zero. */ ASSERT (!signbit (round (0.0))); ASSERT (!!signbit (round (minus_zerod)) == !!signbit (minus_zerod)); /* Positive numbers. */ ASSERT (!signbit (round (0.3))); ASSERT (!signbit (round (0.7))); /* Negative numbers. */ ASSERT (!!signbit (round (-0.3)) == !!signbit (minus_zerod)); ASSERT (!!signbit (round (-0.7)) == !!signbit (minus_zerod)); /* [MX] shaded specification in POSIX. */ /* NaN. */ ASSERT (isnand (round (NaNd ()))); /* Infinity. */ ASSERT (round (Infinityd ()) == Infinityd ()); ASSERT (round (- Infinityd ()) == - Infinityd ()); return 0; }