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ceil function - round up the fractional part

You can use the ceil function to round up the decimal point.

use POSIX 'ceil';
$ret = ceil $num;

Example

This is an example using the ceil function.

use strict;
use warnings;
use POSIX 'ceil';

my $num1 = 1.5;
my $num2 = -1.5;

print "(1) Round up the decimal point.\n";
my $num1_ceil = ceil $num1;
my $num2_ceil = ceil $num2;

print "Round up $num1: $num1_ceil\n";
print "Round up $num2: $num2_ceil\n\n";