Math::BigRat 0.20

Math::BigRat package arbitrary big rational numbers.

SYNOPSIS

use Math::BigRat;

my $x = Math::BigRat->new(3/7); $x += 5/9;

print $x->bstr(),"n";
print $x ** 2,"n";

my $y = Math::BigRat->new(inf);
print "$y ", ($y->is_inf ? is : is not) , " infinityn";

my $z = Math::BigRat->new(144); $z->bsqrt();

Math::BigRat complements Math::BigInt and Math::BigFloat by providing support for arbitrary big rational numbers.

MATH LIBRARY

You can change the underlying module that does the low-level math operations by using:

use Math::BigRat try => GMP;

Note: This needs Math::BigInt::GMP installed.
The following would first try to find Math::BigInt::Foo, then Math::BigInt::Bar, and when this also fails, revert to Math::BigInt::Calc:

use Math::BigRat try => Foo,Math::BigInt::Bar;

If you want to get warned when the fallback occurs, replace "try" with "lib":

use Math::BigRat lib => Foo,Math::BigInt::Bar;

If you want the code to die instead, replace "try" with "only":

use Math::BigRat only => Foo,Math::BigInt::Bar;