PHP | gmp_com() Function

The gmp_com() is an inbuilt function in PHP which is used to calculate the one's complement of a GMP number(GNU Multiple Precision : For large numbers). Syntax:

gmp_com($num)

Parameters: This function accepts a GMP number $num as a mandatory parameter as shown in the above syntax. This parameter can be a GMP object in PHP version 5.6 and later, or we are also allowed to pass a numeric string provided that it is possible to convert that string to a number. Return Value: This function returns a GMP number which is the one's complement of a GMP number passed to it as parameter. Examples:

 Input : gmp_com("1235") Output : -1236 Input : gmp_com("1234") Output : -1235 

Below programs illustrate the gmp_com() function in PHP : Program 1: Program to calculate the one's complement of a GMP number when numeric strings as GMP numbers are passed as arguments. php

<?php // PHP program to calculate the one's complement // of a GMP number passed as arguments  // strings as GMP numbers  $num = "1345"; // calculate the one's complement of a GMP number $res = gmp_com($num); echo $res; ?> 

Output:

 -1346 

Program 2: Program to calculate the one's complement of a GMP number when GMP number is passed as argument. php

<?php // PHP program to calculate the one's complement // of a GMP number passed as arguments  // creating GMP numbers using gmp_init() $num = gmp_init(132); // calculate the one's complement of a GMP number $res = gmp_com($num); echo $res; ?> 

Output:

 -133 

Reference: http://php.net/manual/en/function.gmp-com.php