gmp_pow
(PHP 4 >= 4.0.4, PHP 5)
gmp_pow -- Raise number into power
Description
resource
gmp_pow
( resource base, int exp )
Raise
base
into power
exp
. The case of 0^0 yields
1.
exp
cannot be negative.
例子 1.
gmp_pow()
example
<?php
$pow1
=
gmp_pow
(
"2"
,
31
);
echo
gmp_strval
(
$pow1
) .
"\n"
;
$pow2
=
gmp_pow
(
"0"
,
0
);
echo
gmp_strval
(
$pow2
) .
"\n"
;
$pow3
=
gmp_pow
(
"2"
, -
1
);
// Negative exp, generates warning
echo
gmp_strval
(
$pow3
) .
"\n"
;
?>
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The printout of the above program will be:
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