bcpowmod
(PHP 5)
bcpowmod — Raise an arbitrary precision number to another, reduced by a specified modulus
Description
string bcpowmod
( string $left_operand
, string $right_operand
, string $modulus
[, int $scale
] )
Parameters
-
left_operand
-
The left operand, as a string.
-
right_operand
-
The right operand, as a string.
-
modulus
-
The modulus, as a string.
-
scale
-
This optional parameter is used to set the number
of digits after the decimal place in the result. You can also set the global default scale
for all functions by using bcscale().
Return Values
Returns the result as a string, or NULL if modulus
is 0.
Notes
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.
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