INTMAX_MAX
#define MAX_VALUE INTMAX_MAX
cutoff = neg ? INTMAX_MIN : INTMAX_MAX;
acc = INTMAX_MAX;
long long mindiff = INTMAX_MAX;
if (INTMAX_MAX / SECSPER400YEARS < diff400)
if (INTMAX_MAX / SECSPER400YEARS < diff400)
enum { SECSPER400YEARS_FITS = SECSPERLYEAR <= INTMAX_MAX / 400 };