gmp_gcd

Calculate GCD

Description

GMP gmp_gcd(GMPintstring $num1, GMPintstring $num2)

Calculate greatest common divisor of num1 and num2. The result is always positive even if either of, or both, input operands are negative.

Parameters

num1

A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init with automatic base detection (i.e. when base is equal to 0).

num2

A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init with automatic base detection (i.e. when base is equal to 0).

Return Values

A positive GMP number that divides into both num1 and num2.

Examples

Example #1 gmp_gcd example

<?php
$gcd = gmp_gcd("12", "21");
echo gmp_strval($gcd) . "\n";
?>

The above example will output:

3

See Also

  • gmp_lcm