libalglib-dev 3.16.0-1build1 (amd64 binary) in ubuntu focal

 ALGLIB is a cross-platform numerical analysis and data processing library.
 This package support C++. ALGLIB features include:
 .
    * Linear algebra (direct algorithms, EVD/SVD)
    * Solvers (linear and nonlinear)
    * Interpolation
    * Optimization
    * Fast Fourier transforms
    * Numerical integration
    * Linear and nonlinear least-squares fitting
    * Ordinary differential equations
    * Special functions
    * Statistics (descriptive statistics, hypothesis testing)
    * Data analysis (classification/regression, including neural networks)
 .
 This package contains the development files (headers and documentation) for
 ALGLIB.