IMSL® Fortran Math Library Documentation
The IMSL® Fortran Numerical Library consists of two separate but coordinated libraries that allow easy user access, organized as follows:
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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.
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The Stat Numerical Library: Statistics, with a single user guide, Stat Library.
IMSL Fortran Math Library
Discover the IMSL Fortran Math Library.
Finding the Right Routine
Learn how to find the right routine.
Alphabetical Summary of Routines
Browse the Alphabetical summary of functions available in IMSL Fortran 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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