unumber

unumber is a small C++23 library of arbitrary-precision number types built on GMP (gmp / gmpxx).

Included types:

• BigInteger — arbitrary-size signed integer (mpz_class)
• BigDecimal — fixed-scale decimal with configurable rounding (stored as mpz_class + scale)
• BigFloat — arbitrary-precision float (mpf_class) with explicit precision control
• BigRational — exact rational (mpq_class)
• BigModular — integers modulo m (with inversion via mpz_invert)
• BigMatrix — simple matrix for BigInteger | BigDecimal | BigFloat | BigRational

Status

This documentation describes the public API exposed by the headers in include/unumber/**.

Requirements

• C++23 compiler
• GMP development packages (both gmp and gmpxx)