strtoll benchmark

strtoll_bench.c

#include <errno.h>
#include <stdio.h>

int main(int argc, const char **argv) {
  if (argc != 3) {
    printf("Usage: %s <integer> <iterations>\n", argv[0]);
    return -1;
  }

  const char *input = argv[1];
  const char *iteration_s = argv[2];

  long long result = 0;
  size_t i;

  int iterations = strtol(argv[2], (char **)NULL, 10);
  if (ERANGE == errno) {
    printf("Overflow when parsing iterations\n");
    return -1;
  }

  if (iterations < 0) {
    printf("Iterations must be positive\n");
    return -1;
  }

  for (i = iterations; i; i--) {
    result = strtoll(input, (char **)NULL, 10);
  }

  printf("Finished conversion\n");
  return 0;
}