BigNum

C++ header for arbitrary-precision integer representation.

Features

construction from
- no parameters - BigNum is initialized to 0
- int64_t
- const std::string& (e.g. -150, +0, 00, -00012, ...)
coppying
unary operators + and -
binary arithmetic operators -, +, * and +=, *=, -=
relational and conditional operators <, >, <=, >=, ==, !=
output to stream - overload of opertor <<