#include <cstdlib>
  ldiv_t ldiv( long numerator, long denominator );

Testing: adiv_t, div_t, ldiv_t.

The ldiv() function returns the quotient and remainder of the operation numerator / denominator. The ldiv_t structure is defined in cstdlib and has at least:

   long quot;  // the quotient
   long rem;   // the remainder