| /* Test of rounding towards negative infinity. |
| Copyright (C) 2007-2020 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>, 2007. */ |
| |
| #include <config.h> |
| |
| #include <math.h> |
| |
| #include "signature.h" |
| SIGNATURE_CHECK (floorf, float, (float)); |
| |
| #include "isnanf-nolibm.h" |
| #include "minus-zero.h" |
| #include "infinity.h" |
| #include "nan.h" |
| #include "macros.h" |
| |
| /* If IEEE compliance was not requested, the ICC compiler inlines its |
| own floorf assembly that turns -0.0f to 0.0f; but that is a correct |
| result when IEEE is not enforced. To avoid spurious failure, we |
| have to provide this dummy function in order to outsmart ICC's |
| inlining, and call our floorf through a function pointer. */ |
| static float |
| dummy (float f) |
| { |
| return 0; |
| } |
| |
| int |
| main (int argc, char **argv _GL_UNUSED) |
| { |
| float (*my_floorf) (float) = argc ? floorf : dummy; |
| |
| /* Zero. */ |
| ASSERT (my_floorf (0.0f) == 0.0f); |
| ASSERT (my_floorf (minus_zerof) == 0.0f); |
| /* Positive numbers. */ |
| ASSERT (my_floorf (0.3f) == 0.0f); |
| ASSERT (my_floorf (0.7f) == 0.0f); |
| ASSERT (my_floorf (1.0f) == 1.0f); |
| ASSERT (my_floorf (1.5f) == 1.0f); |
| ASSERT (my_floorf (1.999f) == 1.0f); |
| ASSERT (my_floorf (2.0f) == 2.0f); |
| ASSERT (my_floorf (65535.99f) == 65535.0f); |
| ASSERT (my_floorf (65536.0f) == 65536.0f); |
| ASSERT (my_floorf (2.341e31f) == 2.341e31f); |
| /* Negative numbers. */ |
| ASSERT (my_floorf (-0.3f) == -1.0f); |
| ASSERT (my_floorf (-0.7f) == -1.0f); |
| ASSERT (my_floorf (-1.0f) == -1.0f); |
| ASSERT (my_floorf (-1.001f) == -2.0f); |
| ASSERT (my_floorf (-1.5f) == -2.0f); |
| ASSERT (my_floorf (-1.999f) == -2.0f); |
| ASSERT (my_floorf (-2.0f) == -2.0f); |
| ASSERT (my_floorf (-65535.99f) == -65536.0f); |
| ASSERT (my_floorf (-65536.0f) == -65536.0f); |
| ASSERT (my_floorf (-2.341e31f) == -2.341e31f); |
| /* Infinite numbers. */ |
| ASSERT (my_floorf (Infinityf ()) == Infinityf ()); |
| ASSERT (my_floorf (- Infinityf ()) == - Infinityf ()); |
| /* NaNs. */ |
| ASSERT (isnanf (my_floorf (NaNf ()))); |
| |
| return 0; |
| } |