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#include <volk/volk_runtime.h>
#include <volk/volk.h>
#include <qa_32f_stddev_aligned16.h>
#include <volk/volk_32f_stddev_aligned16.h>
#include <cstdlib>
#include <ctime>
//test for sse
#ifndef LV_HAVE_SSE
void qa_32f_stddev_aligned16::t1() {
printf("sse not available... no test performed\n");
}
#else
void qa_32f_stddev_aligned16::t1() {
volk_runtime_init();
volk_environment_init();
clock_t start, end;
double total;
const int vlen = 3201;
const int ITERS = 100000;
float input0[vlen] __attribute__ ((aligned (16)));
float stddev_generic;
float stddev_sse;
float stddev_sse4_1;
float mean = 0;
for(int i = 0; i < vlen; ++i) {
input0[i] = ((float) (rand() - (RAND_MAX/2))) / static_cast<float>((RAND_MAX/2));
mean += input0[i];
}
mean /= static_cast<float>(vlen);
printf("32f_stddev_aligned\n");
start = clock();
for(int count = 0; count < ITERS; ++count) {
volk_32f_stddev_aligned16_manual(&stddev_generic, input0, mean, vlen, "generic");
}
end = clock();
total = (double)(end-start)/(double)CLOCKS_PER_SEC;
printf("generic_time: %f\n", total);
start = clock();
for(int count = 0; count < ITERS; ++count) {
volk_32f_stddev_aligned16_manual(&stddev_sse, input0, mean, vlen, "sse");
}
end = clock();
total = (double)(end-start)/(double)CLOCKS_PER_SEC;
printf("sse_time: %f\n", total);
start = clock();
for(int count = 0; count < ITERS; ++count) {
get_volk_runtime()->volk_32f_stddev_aligned16(&stddev_sse4_1, input0, mean, vlen);
}
end = clock();
total = (double)(end-start)/(double)CLOCKS_PER_SEC;
printf("sse4_1_time: %f\n", total);
for(int i = 0; i < 1; ++i) {
//printf("inputs: %d, %d\n", input0[i*2], input0[i*2 + 1]);
//printf("generic... %d, ssse3... %d\n", output0[i], output1[i]);
}
//printf("%d...%d\n", output0[i], output01[i]);
CPPUNIT_ASSERT_DOUBLES_EQUAL(stddev_generic, stddev_sse, fabs(stddev_generic)*1e-4);
CPPUNIT_ASSERT_DOUBLES_EQUAL(stddev_generic, stddev_sse4_1, fabs(stddev_generic)*1e-4);
}
#endif
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