/* * 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; }