gmp_clrbit

(PHP 4 >= 4.0.4, PHP 5)

gmp_clrbit -- Clear bit

Description

void gmp_clrbit ( resource &a, int index)

Clears (sets to 0) bit index in a. The index starts at 0.

Note: Unlike most of the other GMP functions, gmp_clrbit() must be called with a GMP resource that already exists (using gmp_init() for example). One will not be automatically created.

Example 1. gmp_clrbit() example

<?php
$a
= gmp_init("0xff");
gmp_clrbit($a, 0); // index starts at 0, least significant bit
echo gmp_strval($a) . "\n";
?>

The printout of the above program will be:

254

See also gmp_setbit().


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