Mercurial > gnulib
view tests/test-atan2f.c @ 40186:8964917f9574
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author | Karl Berry <karl@freefriends.org> |
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date | Mon, 18 Feb 2019 08:02:49 -0800 |
parents | b06060465f09 |
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/* Test of atan2f() function. Copyright (C) 2010-2019 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 <https://www.gnu.org/licenses/>. */ /* Written by Bruno Haible <bruno@clisp.org>, 2010-2011. */ #include <config.h> #include <math.h> #include "signature.h" SIGNATURE_CHECK (atan2f, float, (float, float)); #include "macros.h" volatile float x; volatile float y; float z; int main () { /* A particular value in the first quadrant. */ x = 0.6f; y = 0.8f; z = atan2f (y, x); ASSERT (z >= 0.92729515f && z <= 0.9272953f); /* A particular value in the second quadrant. */ x = -0.6f; y = 0.8f; z = atan2f (y, x); ASSERT (z >= 2.2142974f && z <= 2.2142975f); /* A particular value in the third quadrant. */ x = -0.6f; y = -0.8f; z = atan2f (y, x); ASSERT (z >= -2.2142975f && z <= -2.2142974f); /* A particular value in the fourth quadrant. */ x = 0.6f; y = -0.8f; z = atan2f (y, x); ASSERT (z >= -0.9272953f && z <= -0.92729515f); return 0; }