#include <math.h>
#include <stdlib.h>

#ifdef _WIN32
#include <float.h>
#define isnan _isnan
#endif

int main()
{
  int my_i, iabs;
  double my_d, dabs;

  assert(abs(-1) == 1);
  assert(abs(1) == 1);
  assert(fabs(1.0) == 1);
  assert(fabs(-1.0) == 1);

  iabs = (my_i < 0) ? -my_i : my_i;
  assert(abs(my_i) == iabs);

  __CPROVER_assume(!isnan(my_d));

  dabs = (my_d < 0) ? -my_d : my_d;
  assert(fabs(my_d) == dabs);
}
