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.
The following two statements are functionally identical. The
bcpowmod() version however, executes in
less time and can accept larger parameters.
Notã:
Because this method uses the modulus operation, non-natural numbers
may give unexpected results. A natural number is any positive
non-zero integer.
See also bcpow(), and
bcmod().
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