Mercurial > gnulib
annotate tests/test-rint.c @ 40057:b06060465f09
maint: Run 'make update-copyright'
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Tue, 01 Jan 2019 00:25:11 +0100 |
| parents | 10eb9086bea0 |
| children |
| rev | line source |
|---|---|
| 12805 | 1 /* Test of rint() function. |
|
40057
b06060465f09
maint: Run 'make update-copyright'
Paul Eggert <eggert@cs.ucla.edu>
parents:
19484
diff
changeset
|
2 Copyright (C) 2010-2019 Free Software Foundation, Inc. |
| 12805 | 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/>. */ |
| 12805 | 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 (rint, double, (double)); | |
| 25 | |
| 15916 | 26 #include <float.h> |
| 27 #include <stdio.h> | |
| 12805 | 28 |
| 15916 | 29 #include "isnand-nolibm.h" |
| 30 #include "minus-zero.h" | |
| 31 #include "infinity.h" | |
| 32 #include "nan.h" | |
| 33 #include "macros.h" | |
| 12805 | 34 |
|
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rint* tests: Avoid gcc warnings.
Bruno Haible <bruno@clisp.org>
parents:
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diff
changeset
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35 #undef INFINITY |
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c4a7dd5a1c2c
rint* tests: Avoid gcc warnings.
Bruno Haible <bruno@clisp.org>
parents:
16563
diff
changeset
|
36 #undef NAN |
|
c4a7dd5a1c2c
rint* tests: Avoid gcc warnings.
Bruno Haible <bruno@clisp.org>
parents:
16563
diff
changeset
|
37 |
| 16563 | 38 #define DOUBLE double |
| 39 #define ISNAN isnand | |
| 40 #define INFINITY Infinityd () | |
| 41 #define NAN NaNd () | |
| 42 #define L_(literal) literal | |
| 43 #define RINT rint | |
| 44 #define RANDOM randomd | |
| 45 #include "test-rint.h" | |
| 46 | |
| 12805 | 47 int |
| 48 main () | |
| 49 { | |
| 15916 | 50 /* Consider the current rounding mode, cf. |
| 51 <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/float.h.html> */ | |
| 52 if (FLT_ROUNDS == 1) | |
| 53 { | |
| 54 /* The current rounding mode is round-to-nearest | |
| 55 (the default in IEEE 754). */ | |
| 12805 | 56 |
| 15916 | 57 /* Zero. */ |
| 58 ASSERT (rint (0.0) == 0.0); | |
| 59 ASSERT (rint (minus_zerod) == 0.0); | |
| 60 /* Positive numbers. */ | |
| 61 ASSERT (rint (0.3) == 0.0); | |
| 62 ASSERT (rint (0.5) == 0.0); /* unlike round() */ | |
| 63 ASSERT (rint (0.7) == 1.0); | |
| 64 ASSERT (rint (1.0) == 1.0); | |
| 65 ASSERT (rint (1.5) == 2.0); | |
| 66 ASSERT (rint (1.999) == 2.0); | |
| 67 ASSERT (rint (2.0) == 2.0); | |
| 68 ASSERT (rint (2.1) == 2.0); | |
| 69 ASSERT (rint (2.5) == 2.0); /* unlike round() */ | |
| 70 ASSERT (rint (2.7) == 3.0); | |
| 71 ASSERT (rint (65535.999) == 65536.0); | |
| 72 ASSERT (rint (65536.0) == 65536.0); | |
| 73 ASSERT (rint (65536.001) == 65536.0); | |
| 74 ASSERT (rint (2.341e31) == 2.341e31); | |
| 75 /* Negative numbers. */ | |
| 76 ASSERT (rint (-0.3) == 0.0); | |
| 77 ASSERT (rint (-0.5) == 0.0); /* unlike round() */ | |
| 78 ASSERT (rint (-0.7) == -1.0); | |
| 79 ASSERT (rint (-1.0) == -1.0); | |
| 80 ASSERT (rint (-1.5) == -2.0); | |
| 81 ASSERT (rint (-1.999) == -2.0); | |
| 82 ASSERT (rint (-2.0) == -2.0); | |
| 83 ASSERT (rint (-2.1) == -2.0); | |
| 84 ASSERT (rint (-2.5) == -2.0); /* unlike round() */ | |
| 85 ASSERT (rint (-2.7) == -3.0); | |
| 86 ASSERT (rint (-65535.999) == -65536.0); | |
| 87 ASSERT (rint (-65536.0) == -65536.0); | |
| 88 ASSERT (rint (-65536.001) == -65536.0); | |
| 89 ASSERT (rint (-2.341e31) == -2.341e31); | |
| 16563 | 90 |
| 91 test_function (); | |
| 12805 | 92 |
| 15916 | 93 return 0; |
| 94 } | |
| 95 else | |
| 96 { | |
| 97 fputs ("Skipping test: non-standard rounding mode\n", stderr); | |
| 98 return 77; | |
| 99 } | |
| 12805 | 100 } |