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b486e3aba5
It was failing with missing include files. While here, destroy the ugly "../src/..." include paths used in the tests that was just hacking around this problem in the Makefile: sed -i s/..\\/src\\/// tests/*.c
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/*
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* Copyright © 2012 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <assert.h>
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#include "wayland-private.h"
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volatile double global_d;
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static void
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noop_conversion(void)
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{
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wl_fixed_t f;
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union {
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int64_t i;
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double d;
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} u;
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for (f = 0; f < INT32_MAX; f++) {
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u.i = f;
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global_d = u.d;
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}
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}
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static void
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magic_conversion(void)
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{
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wl_fixed_t f;
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for (f = 0; f < INT32_MAX; f++)
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global_d = wl_fixed_to_double(f);
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}
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static void
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mul_conversion(void)
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{
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wl_fixed_t f;
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/* This will get optimized into multiplication by 1/256 */
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for (f = 0; f < INT32_MAX; f++)
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global_d = f / 256.0;
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}
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double factor = 256.0;
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static void
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div_conversion(void)
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{
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wl_fixed_t f;
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for (f = 0; f < INT32_MAX; f++)
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global_d = f / factor;
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}
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static void
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benchmark(const char *s, void (*f)(void))
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{
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struct timespec start, stop, elapsed;
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clock_gettime(CLOCK_MONOTONIC, &start);
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f();
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clock_gettime(CLOCK_MONOTONIC, &stop);
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elapsed.tv_sec = stop.tv_sec - start.tv_sec;
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elapsed.tv_nsec = stop.tv_nsec - start.tv_nsec;
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if (elapsed.tv_nsec < 0) {
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elapsed.tv_nsec += 1000000000;
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elapsed.tv_sec--;
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}
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printf("benchmarked %s:\t%ld.%09lds\n",
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s, elapsed.tv_sec, elapsed.tv_nsec);
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}
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int main(int argc, char *argv[])
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{
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benchmark("noop", noop_conversion);
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benchmark("magic", magic_conversion);
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benchmark("div", div_conversion);
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benchmark("mul", mul_conversion);
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return 0;
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}
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