Returns n1 raised to the power n2 if that result is an exact integer; otherwise signals an error.
returns 1 for n2 equal to 0; returns 0 for positive integer n2; signals an error otherwise.
Returns the largest exact integer whose power of base is less than or equal to k. If base or k is not a positive exact integer, then
integer-logsignals an error.
For non-negative integer k returns the largest integer whose square is less than or equal to k; otherwise signals an error.
are redefined so that they accept only exact-integer arguments.