Mercurial > gnulib
annotate tests/test-modf.c @ 40186:8964917f9574
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| author | Karl Berry <karl@freefriends.org> |
|---|---|
| date | Mon, 18 Feb 2019 08:02:49 -0800 |
| parents | b06060465f09 |
| children |
| rev | line source |
|---|---|
| 12801 | 1 /* Test of modf() function. |
|
40057
b06060465f09
maint: Run 'make update-copyright'
Paul Eggert <eggert@cs.ucla.edu>
parents:
19484
diff
changeset
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2 Copyright (C) 2010-2019 Free Software Foundation, Inc. |
| 12801 | 3 |
| 4 This program is free software: you can redistribute it and/or modify | |
| 5 it under the terms of the GNU General Public License as published by | |
| 6 the Free Software Foundation; either version 3 of the License, or | |
| 7 (at your option) any later version. | |
| 8 | |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
| 19190 | 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| 12801 | 16 |
| 17 /* Written by Bruno Haible <bruno@clisp.org>, 2010. */ | |
| 18 | |
| 19 #include <config.h> | |
| 20 | |
| 21 #include <math.h> | |
| 22 | |
| 23 #include "signature.h" | |
| 24 SIGNATURE_CHECK (modf, double, (double, double *)); | |
| 25 | |
| 16562 | 26 #include <float.h> |
| 27 | |
| 12801 | 28 #include "macros.h" |
| 29 | |
| 16562 | 30 #define DOUBLE double |
| 31 #define L_(literal) literal | |
| 32 #define MANT_DIG DBL_MANT_DIG | |
| 33 #define MODF modf | |
| 34 #define RANDOM randomd | |
| 35 #include "test-modf.h" | |
| 12801 | 36 |
| 37 int | |
| 38 main () | |
| 39 { | |
| 40 /* A particular positive value. */ | |
| 41 x = 5.972406760; | |
| 42 y = modf (x, &z); | |
| 43 ASSERT (y >= 0.972406759 && y <= 0.972406761); | |
| 44 ASSERT (z == 5.0); | |
| 45 | |
| 46 /* A particular negative value. */ | |
| 47 x = -5.972406760; | |
| 48 y = modf (x, &z); | |
|
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dd898709f077
modf tests: Make test sharper.
Bruno Haible <bruno@clisp.org>
parents:
14079
diff
changeset
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49 ASSERT (y >= -0.972406761 && y <= -0.972406759); |
| 12801 | 50 ASSERT (z == -5.0); |
| 51 | |
| 16562 | 52 test_function (); |
| 53 | |
| 12801 | 54 return 0; |
| 55 } |