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#include <cmath>
#include "utest_helper.hpp"
void builtin_atan2(void) {
const int n = 1024;
float y[n], x[n];
// Setup kernel and buffers
OCL_CREATE_KERNEL("builtin_atan2");
OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(float), NULL);
OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(float), NULL);
OCL_CREATE_BUFFER(buf[2], 0, n * sizeof(float), NULL);
OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
globals[0] = n;
locals[0] = 16;
OCL_MAP_BUFFER(0);
OCL_MAP_BUFFER(1);
for (int i = 0; i < n; ++i) {
y[i] = ((float*) buf_data[0])[i] = (rand()&255) * 0.01f;
x[i] = ((float*) buf_data[1])[i] = (rand()&255) * 0.01f;
}
OCL_UNMAP_BUFFER(0);
OCL_UNMAP_BUFFER(1);
OCL_NDRANGE(1);
OCL_MAP_BUFFER(2);
float *dst = (float*) buf_data[2];
for (int i = 0; i < n; ++i) {
float cpu = atan2f(y[i], x[i]);
float gpu = dst[i];
if (fabsf(cpu - gpu) >= 1e-2) {
printf("%f %f %f %f\n", y[i], x[i], cpu, gpu);
OCL_ASSERT(0);
}
}
OCL_UNMAP_BUFFER(2);
}
MAKE_UTEST_FROM_FUNCTION (builtin_atan2);
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