IMSL® Fortran Math Special Functions Library Documentation

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The IMSL Fortran Numerical Library consists of two separate but coordinated libraries that allow easy user access, organized as follows:

  • The Math Numerical Library: General applied mathematics and special functions. This user guide has two parts, the Math Library and the Math Library Special Functions.

  • The Stat Numerical Library: Statistics, with a single user guide, Stat Library.

IMSL Fortran Math Special Functions Library

Discover the IMSL C Math Library.

Finding the Right Routine

Learn how to find the right function.

Alphabetical Summary of Routines

Browse the Alphabetical summary of functions available in IMSL C Math.

Installation and Configuration

Explore how to install and configure FNL, from the product README.

What's new

See what's new in the IMSL® Fortran Numerical Library 2025.1. See the change log for a complete list of new features and enhancements.

Additional resources

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