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Goals and Motivation

The Fortran Standard, as published by the ISO (, does
not have a Standard Library. The goal of this project is to provide a community
driven and agreed upon de facto “standard” library for Fortran, called a
Fortran Standard Library (stdlib). We have a rigorous process how stdlib is
developed as documented in our Workflow. stdlib is both a
specification and a reference implementation. We are cooperating with the
Fortran Standards Committee (e.g., the effort
started at the J3
committee repository) and the plan is to continue working with the Committee in
the future (such as in the step 5. in the Workflow document), so
that if the Committee wants to standardize some feature already available in stdlib, it would
base it on stdlib‘s implementation.


The goal of the Fortran Standard Library is to achieve the following general scope:

  • Utilities (containers, strings, files, OS/environment integration, unit
    testing & assertions, logging, …)
  • Algorithms (searching and sorting, merging, …)
  • Mathematics (linear algebra, sparse matrices, special functions, fast Fourier
    transform, random numbers, statistics, ordinary differential equations,
    numerical integration, optimization, …)

Getting started

Get the code

git clone
cd stdlib


The preprocessor fypp ( is needed because metaprogramming is used.
It can be installed using the command line installer pip.

Build with CMake

cmake -B build

cmake --build build

cmake --build build --target test

Build with make

Alternatively, you can build using provided Makefiles:

make -f Makefile.manual



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