bcpowmod -- Raise an arbitrary precision number to another, reduced by a specified modulus
Description
string bcpowmod ( string x, string y, string modulus [, int scale] )
Use the fast-exponentiation method to raise x to the power y with respect to the modulus modulus. The
optional scale can be used to set the number of digits after the decimal place in the result.
Note: Because this method uses the modulus operation, non-natural numbers may give unexpected results. A natural number is any positive non-zero integer.
Examples
The following two statements are functionally identical. The bcpowmod() version however, executes in less time and can accept larger parameters.
