42 lines
783 B
C
42 lines
783 B
C
#include "lib.c"
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#ifndef BENCHMARK_ROUNDS
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#define BENCHMARK_ROUNDS 1
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#endif
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uint32_t crc32_update(char *p, uint16_t len)
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{
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uint16_t i;
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uint32_t crc = 0;
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while (len--) {
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crc ^= *p++;
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for (i = 0; i < 8; i++)
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crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0);
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}
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return crc;
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}
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uint32_t array[8];
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MAIN() {
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MARKER(start_trace);
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uint32_t crc = 0;
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uint32_t a = 0, b = 1;
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for (uint16_t i = 0; i < BENCHMARK_ROUNDS; i++) {
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// Calculate the nth. Fibonacci Number
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for (uint8_t x = 0; x < sizeof(array)/sizeof(*array); x++) {
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array[x] = a;
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a = a + b;
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b = array[x];
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}
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crc ^= crc32_update((char *)array, sizeof(array));
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}
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MARKER(stop_trace);
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POSIX_PRINTF("SUM: %x\n", crc);
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}
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