141 lines
4.8 KiB
C
141 lines
4.8 KiB
C
/*
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* Copyright © 2015 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <string.h>
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#include <math.h>
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#include "macros.h"
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#include "rounding.h"
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int main(int argc, char *argv[])
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{
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const struct {
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float input, expected;
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} float_data[] = {
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{ 0.0, 0.0 },
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{ nextafterf(0.5, 0.0), 0.0 },
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{ 0.5, 0.0 },
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{ nextafterf(0.5, 1.0), 1.0 },
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{ 1.0, 1.0 },
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{ nextafterf(1.5, 1.0), 1.0 },
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{ 1.5, 2.0 },
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{ nextafterf(1.5, 2.0), 2.0 },
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{ 2.0, 2.0 },
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{ nextafterf(2.5, 2.0), 2.0 },
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{ 2.5, 2.0 },
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{ nextafterf(2.5, 3.0), 3.0 },
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};
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const struct {
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double input, expected;
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} double_data[] = {
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{ 0.0, 0.0 },
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{ nextafter(0.5, 0.0), 0.0 },
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{ 0.5, 0.0 },
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{ nextafter(0.5, 1.0), 1.0 },
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{ 1.0, 1.0 },
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{ nextafter(1.5, 1.0), 1.0 },
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{ 1.5, 2.0 },
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{ nextafter(1.5, 2.0), 2.0 },
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{ 2.0, 2.0 },
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{ nextafter(2.5, 2.0), 2.0 },
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{ 2.5, 2.0 },
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{ nextafter(2.5, 3.0), 3.0 },
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};
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bool failed = false;
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int i;
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for (i = 0; i < ARRAY_SIZE(float_data); i++) {
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float output = _mesa_roundevenf(float_data[i].input);
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if (memcmp(&float_data[i].expected, &output, sizeof(float))) {
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fprintf(stderr, "%d float: expected %f (%a) from "
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"_mesa_roundevenf(%f (%a)) but got %f (%a)\n",
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i,
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float_data[i].expected,
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float_data[i].expected,
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float_data[i].input,
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float_data[i].input,
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output,
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output);
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failed = true;
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}
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}
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/* Test negated values */
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for (i = 0; i < ARRAY_SIZE(float_data); i++) {
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float output = _mesa_roundevenf(-float_data[i].input);
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float negated_expected = -float_data[i].expected;
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if (memcmp(&negated_expected, &output, sizeof(float))) {
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fprintf(stderr, "%d float: expected %f (%a) from "
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"_mesa_roundevenf(%f (%a)) but got %f (%a)\n",
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i,
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negated_expected,
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negated_expected,
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-float_data[i].input,
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-float_data[i].input,
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output,
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output);
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failed = true;
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}
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}
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for (i = 0; i < ARRAY_SIZE(double_data); i++) {
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double output = _mesa_roundeven(double_data[i].input);
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if (memcmp(&double_data[i].expected, &output, sizeof(double))) {
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fprintf(stderr, "%d double: expected %f (%a) from "
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"_mesa_roundeven(%f (%a)) but got %f (%a)\n",
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i,
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double_data[i].expected,
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double_data[i].expected,
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double_data[i].input,
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double_data[i].input,
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output,
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output);
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failed = true;
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}
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}
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/* Test negated values */
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for (i = 0; i < ARRAY_SIZE(double_data); i++) {
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double output = _mesa_roundeven(-double_data[i].input);
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double negated_expected = -double_data[i].expected;
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if (memcmp(&negated_expected, &output, sizeof(double))) {
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fprintf(stderr, "%d double: expected %f (%a) from "
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"_mesa_roundeven(%f (%a)) but got %f (%a)\n",
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i,
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negated_expected,
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negated_expected,
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-double_data[i].input,
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-double_data[i].input,
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output,
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output);
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failed = true;
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}
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}
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return failed;
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}
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