This module adds complex number support to Math::Symbolic. It does so by 
extending the parser of the Math::Symbolic module (that is, the one stored 
in $Math::Symbolic::Parser) with certain special functions that create 
complex constants. (Math::Symbolic::Variable objects have been able to 
contain complex number objects since the very beginning.)

WWW: http://search.cpan.org/dist/Math-SymbolicX-Complex