/*
* 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;
}