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.
注:
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.
例子 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:
|
See also
gmp_setbit()
.