GMP_CLRBIT(3) 1 GMP_CLRBIT(3)
gmp_clrbit - Clear bit
SYNOPSIS
void gmp_clrbit (GMP $a, int $index)
DESCRIPTION
Clears (sets to 0) bit $index in $a. The index starts at 0.
PARAMETERS
o $a
-Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is
possible to convert the latter to a number.
o $index
- The index of the bit to clear. Index 0 represents the least significant bit.
RETURN VALUES
A GMP number resource in PHP 5.5 and earlier, or a GMP object in PHP 5.6 and later.
EXAMPLES
Example #1
gmp_clrbit(3) example
<?php
$a = gmp_init("0xff");
gmp_clrbit($a, 0); // index starts at 0, least significant bit
echo gmp_strval($a) . "
";
?>
The above example will output:
254
NOTES
Note
Unlike most of the other GMP functions, gmp_clrbit(3) must be called with a GMP resource that already exists (using gmp_init(3) for
example). One will not be automatically created.
SEE ALSO
gmp_setbit(3), gmp_testbit(3).
PHP Documentation Group GMP_CLRBIT(3)
