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#include <stdio.h>

int main(void) {
  long int big = 12345678901234567890L;
  float approx = big;
  printf("%ld\n", (big - (long int)approx));
  return 0;
}

#include <assert.h>
#include <float.h>
#include <limits.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>

extern size_t popcount(uintmax_t); /* See INT35-C */
#define PRECISION(umax_value) popcount(umax_value) 

int main(void) {
  assert(PRECISION(LONG_MAX) <= DBL_MANT_DIG * log2(FLT_RADIX));
  long int big = 12345678901234567890L;
  double approx = big;
  printf("%ld\n", (big - (long int)approx));
  return 0;
}