diff options
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/Makefile.am | 4 | ||||
| -rw-r--r-- | src/util/roundeven_test.c | 140 |
2 files changed, 143 insertions, 1 deletions
diff --git a/src/util/Makefile.am b/src/util/Makefile.am index ec49dc6cf16..2e7542e4245 100644 --- a/src/util/Makefile.am +++ b/src/util/Makefile.am @@ -50,7 +50,9 @@ endif libmesautil_la_LIBADD = $(SHA1_LIBS) -check_PROGRAMS = u_atomic_test +roundeven_test_LDADD = -lm + +check_PROGRAMS = u_atomic_test roundeven_test TESTS = $(check_PROGRAMS) BUILT_SOURCES = $(MESA_UTIL_GENERATED_FILES) diff --git a/src/util/roundeven_test.c b/src/util/roundeven_test.c new file mode 100644 index 00000000000..7526db1f3bc --- /dev/null +++ b/src/util/roundeven_test.c @@ -0,0 +1,140 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include <stdio.h> +#include <stdbool.h> +#include <string.h> +#include <math.h> + +#include "macros.h" +#include "rounding.h" + +int main(int argc, char *argv[]) +{ + const struct { + float input, expected; + } float_data[] = { + { 0.0, 0.0 }, + { nextafterf(0.5, 0.0), 0.0 }, + { 0.5, 0.0 }, + { nextafterf(0.5, 1.0), 1.0 }, + { 1.0, 1.0 }, + { nextafterf(1.5, 1.0), 1.0 }, + { 1.5, 2.0 }, + { nextafterf(1.5, 2.0), 2.0 }, + { 2.0, 2.0 }, + { nextafterf(2.5, 2.0), 2.0 }, + { 2.5, 2.0 }, + { nextafterf(2.5, 3.0), 3.0 }, + }; + + const struct { + double input, expected; + } double_data[] = { + { 0.0, 0.0 }, + { nextafter(0.5, 0.0), 0.0 }, + { 0.5, 0.0 }, + { nextafter(0.5, 1.0), 1.0 }, + { 1.0, 1.0 }, + { nextafter(1.5, 1.0), 1.0 }, + { 1.5, 2.0 }, + { nextafter(1.5, 2.0), 2.0 }, + { 2.0, 2.0 }, + { nextafter(2.5, 2.0), 2.0 }, + { 2.5, 2.0 }, + { nextafter(2.5, 3.0), 3.0 }, + }; + + bool failed = false; + int i; + + for (i = 0; i < ARRAY_SIZE(float_data); i++) { + float output = _mesa_roundevenf(float_data[i].input); + if (memcmp(&float_data[i].expected, &output, sizeof(float))) { + fprintf(stderr, "%d float: expected %f (%a) from " + "_mesa_roundevenf(%f (%a)) but got %f (%a)\n", + i, + float_data[i].expected, + float_data[i].expected, + float_data[i].input, + float_data[i].input, + output, + output); + failed = true; + } + } + + /* Test negated values */ + for (i = 0; i < ARRAY_SIZE(float_data); i++) { + float output = _mesa_roundevenf(-float_data[i].input); + float negated_expected = -float_data[i].expected; + if (memcmp(&negated_expected, &output, sizeof(float))) { + fprintf(stderr, "%d float: expected %f (%a) from " + "_mesa_roundevenf(%f (%a)) but got %f (%a)\n", + i, + negated_expected, + negated_expected, + -float_data[i].input, + -float_data[i].input, + output, + output); + failed = true; + } + } + + for (i = 0; i < ARRAY_SIZE(double_data); i++) { + double output = _mesa_roundeven(double_data[i].input); + if (memcmp(&double_data[i].expected, &output, sizeof(double))) { + fprintf(stderr, "%d double: expected %f (%a) from " + "_mesa_roundeven(%f (%a)) but got %f (%a)\n", + i, + double_data[i].expected, + double_data[i].expected, + double_data[i].input, + double_data[i].input, + output, + output); + failed = true; + } + } + + /* Test negated values */ + for (i = 0; i < ARRAY_SIZE(double_data); i++) { + double output = _mesa_roundeven(-double_data[i].input); + double negated_expected = -double_data[i].expected; + if (memcmp(&negated_expected, &output, sizeof(double))) { + fprintf(stderr, "%d double: expected %f (%a) from " + "_mesa_roundeven(%f (%a)) but got %f (%a)\n", + i, + negated_expected, + negated_expected, + -double_data[i].input, + -double_data[i].input, + output, + output); + failed = true; + } + } + + return failed; +} |