Math::BigInt error: Can't locate object method "bmuladd"-CodePudding

I'm trying to do an arithmetic operation involving big numbers using Math::BigInt.

My intention is to multiply the variable k by 4 and then subtract 1. Below is my Perl file attempt MWE:

use strict;
use warnings;
use Math::BigInt;

my $k = '174224571863520493293247799005065324265473'; 
my $int = $k->bmuladd(4,-1);
printf ($int);

I get the following error message:

Can't locate object method "bmuladd" via package "2" (perhaps you forgot to load "2"?) at pv5.pl line 7.

Reading https://perldoc.perl.org/Math::BigInt#Arithmetic-methods, I could not understand something that helped solve this.

CodePudding user response：

You need to create a Math::BigInt object using new before you can use methods such as bmuladd. Refer to the SYNOPSIS section of the doc:

use strict;
use warnings;
use Math::BigInt;

my $k = '174224571863520493293247799005065324265473'; 
my $x = Math::BigInt->new($k);
my $int = $x->bmuladd(4,-1);
print "$int\n";

Prints:

696898287454081973172991196020261297061891