diff options
author | Bruno Haible <bruno@clisp.org> | 2012-02-26 15:09:38 +0100 |
---|---|---|
committer | Bruno Haible <bruno@clisp.org> | 2012-02-26 15:09:38 +0100 |
commit | c1e9bb1a2e57d9fbcd6f75a0fd828609a0d14716 (patch) | |
tree | 0d8868dc2f1c45930ad24a1f0d08d26fb8cad2ba | |
parent | 76773817e6ffc360ca570640d324d66d101bb1da (diff) | |
download | gnulib-c1e9bb1a2e57d9fbcd6f75a0fd828609a0d14716.tar.gz |
Tests for module 'frexp-ieee'.
* modules/frexp-ieee-tests: New file.
* tests/test-frexp-ieee.c: New file.
-rw-r--r-- | ChangeLog | 4 | ||||
-rw-r--r-- | modules/frexp-ieee-tests | 18 | ||||
-rw-r--r-- | tests/test-frexp-ieee.c | 67 |
3 files changed, 89 insertions, 0 deletions
@@ -1,5 +1,9 @@ 2012-02-26 Bruno Haible <bruno@clisp.org> + Tests for module 'frexp-ieee'. + * modules/frexp-ieee-tests: New file. + * tests/test-frexp-ieee.c: New file. + New module 'frexp-ieee'. * modules/frexp-ieee: New file. diff --git a/modules/frexp-ieee-tests b/modules/frexp-ieee-tests new file mode 100644 index 0000000000..e3774f5540 --- /dev/null +++ b/modules/frexp-ieee-tests @@ -0,0 +1,18 @@ +Files: +tests/test-frexp-ieee.c +tests/minus-zero.h +tests/infinity.h +tests/nan.h +tests/macros.h + +Depends-on: +isnand-nolibm +float +signbit + +configure.ac: + +Makefile.am: +TESTS += test-frexp-ieee +check_PROGRAMS += test-frexp-ieee +test_frexp_ieee_LDADD = $(LDADD) @FREXP_LIBM@ diff --git a/tests/test-frexp-ieee.c b/tests/test-frexp-ieee.c new file mode 100644 index 0000000000..8a3897e948 --- /dev/null +++ b/tests/test-frexp-ieee.c @@ -0,0 +1,67 @@ +/* Test of splitting a double into fraction and mantissa. + Copyright (C) 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 of the License, 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 () +{ + /* [MX] shaded specification in POSIX. */ + + /* NaN. */ + { + int exp = -9999; + double mantissa; + mantissa = frexp (NaNd (), &exp); + ASSERT (isnand (mantissa)); + } + + /* Signed zero. */ + { + int exp = -9999; + double mantissa; + mantissa = frexp (0.0, &exp); + ASSERT (mantissa == 0.0); + ASSERT (!signbit (mantissa)); + ASSERT (exp == 0); + } + { + int exp = -9999; + double mantissa; + mantissa = frexp (minus_zerod, &exp); + ASSERT (mantissa == 0.0); + ASSERT (!!signbit (mantissa) == !!signbit (minus_zerod)); + ASSERT (exp == 0); + } + + /* Infinity. */ + { + int exp = -9999; + double mantissa; + mantissa = frexp (Infinityd (), &exp); + ASSERT (mantissa == Infinityd ()); + } + + return 0; +} |