Open-source alternatives to Mrmath

Big Decimal Math

CAI NEURAL API is a pascal based deep learning neural network API optimized for AVX, AVX2 and AVX512 instruction sets plus OpenCL capable devices including AMD, Intel and NVIDIA. This API has been tested under Windows and Linux.

FastMath is a Delphi math library that is optimized for fast performance (sometimes at the cost of not performing error checking or losing a little accuracy). It uses hand-optimized assembly code to achieve much better performance then the equivalent functions provided by the Delphi RTL.

BigNumberXLib

TIntX