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verify_sse.cpp
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verify_sse.cpp
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#include "itoa_divless_sse.h"
#include <vector>
#include <cstring>
#include <cstdio>
#include <cstdlib>
int main() {
char result[17];
memset(result, 0, sizeof(result));
char expected[17];
memset(expected, 0, sizeof(expected));
const std::vector<uint32_t> quick_test{
uint32_t(0),
uint32_t(1),
uint32_t(0xff),
uint32_t(0xff) + 1,
uint32_t(0xffff),
uint32_t(0xffff) + 1,
uint32_t(0xffffff),
uint32_t(0xffffff) + 1,
uint32_t(0xffffffff)};
for (const uint32_t x: quick_test) {
itoa_divless_sse(x, result);
sprintf(expected, "%016u", x);
if (memcmp(result, expected, 16) != 0) {
printf("FAILED for %u\n", x);
printf("expected = '%s'\n", expected);
printf("result = '%s'\n", result);
return EXIT_FAILURE;
}
}
const int interval = 1000000;
int k = interval;
for (uint64_t i=0; i <= 0xffffffff; i++) {
const uint32_t x = i;
itoa_divless_sse(x, result);
sprintf(expected, "%016u", x);
if (memcmp(result, expected, 16) != 0) {
printf("FAILED for %u\n", x);
printf("expected = '%s'\n", expected);
printf("result = '%s'\n", result);
return EXIT_FAILURE;
}
k -= 1;
if (k == 0) {
const double prog = double(x) * 100 / double(0xffffffff);
printf("%6.2f%%\r", prog);
fflush(stdout);
k = interval;
}
}
puts("");
puts("All OK");
return EXIT_SUCCESS;
}