IMSL Fortran Library 6.0

IMSL Fortran Library, developed by Visual Numerics, Inc., is a comprehensive, commercially supported collection of mathematical and statistical algorithms for Fortran developers. Built for accuracy, reliability, and portability, it provides a broad range of ready-to-use routines that help teams deliver high‑performance scientific and engineering applications without reinventing core numerical methods.

Key capabilities include:

• Linear algebra and eigensystems
• Optimization and nonlinear solvers (including least squares)
• Ordinary differential equation solvers
• Numerical integration and quadrature
• Interpolation, curve fitting, and splines
• Fast Fourier transforms and related transforms
• Special functions
• Random number generation and probability distributions
• Statistical analysis, including descriptive statistics, hypothesis testing, regression, and multivariate methods

Designed to integrate smoothly with leading Fortran compilers across major operating systems, the library includes extensive documentation and example programs, consistent interfaces, and robust error handling. IMSL Fortran Library has been used for decades in production environments across engineering, physics, finance, and research, helping organizations reduce development time while maintaining numerical robustness and performance.

IMSL Fortran Library is developed by Visual Numerics, Inc.. The most popular version of this product among our users is 6.0.

You can check Simply Fortran, Small Library Organizer Pro, NAG Fortran Builder and other related programs like Library Gold at the "download" section.