GMP_SIGN(3) 1 GMP_SIGN(3)
gmp_sign - Sign of number
SYNOPSIS
int gmp_sign (GMP $a)
DESCRIPTION
Checks the sign of a number.
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.
RETURN VALUES
Returns 1 if $a is positive, -1 if $a is negative, and 0 if $a is zero.
EXAMPLES
Example #1
gmp_sign(3) example
<?php
// positive
echo gmp_sign("500") . "
";
// negative
echo gmp_sign("-500") . "
";
// zero
echo gmp_sign("0") . "
";
?>
The above example will output:
1
-1
0
SEE ALSO
gmp_abs(3), abs(3).
PHP Documentation Group GMP_SIGN(3)
