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Diffstat (limited to 'gnulib/tests/test-math.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/tests/test-math.c | 53 |
2 files changed, 53 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/tests/test-math.c b/gnulib/tests/test-math.c new file mode 100644 index 0000000..8565925 --- /dev/null +++ b/gnulib/tests/test-math.c @@ -0,0 +1,53 @@ +/* Test of <math.h> substitute. + Copyright (C) 2007-2011 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/>. */ + +/* Written by Bruno Haible <bruno@clisp.org>, 2007. */ + +#include <config.h> + +#include <math.h> + +#ifndef NAN +# error NAN should be defined +choke me +#endif + +#if 0 +/* Check that NAN expands into a constant expression. */ +static float n = NAN; +#endif + +/* Compare two numbers with ==. + This is a separate function because IRIX 6.5 "cc -O" miscompiles an + 'x == x' test. */ +static int +numeric_equal (double x, double y) +{ + return x == y; +} + +int +main (void) +{ + double d = NAN; + double zero = 0.0; + if (numeric_equal (d, d)) + return 1; + d = HUGE_VAL; + if (!numeric_equal (d, 1.0 / zero)) + return 1; + return 0; +} |