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Welcome to the Universal Numbers wiki!

Universal is a C++17/20 header-only library for plug-in replacements of native language types to optimize algorithmic performance and energy efficiency. The library consists of the following number systems:

• adaptive decimal: decimal
• signed integer: integer<nbits>
• fixed-point: fixpnt<nbits, rbits>
• linear floating-point: bfloat<nbits, es>
• tapered floating-point: posit<nbits, es>
• logarithmic: lns
• interval: areal<nbits, es>, valid<nbits, es>
• Kulisch super-accumulator for floating-point: quire<nbits, es, capacity>

C++20 enables constexpr operations for floating-point types.

Universal is used to design and optimize mixed-precision algorithms for HPC and AI applications. In addition to increasing performance and improving energy efficiency, Universal also contains high-performance reproducible computation for safety and reliability applications.