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IMSL Numerical Libraries
Developer	Perforce
Written in	C, Fortran, Java, Python
Type	Numerical analysis software
Website	www.perforce.com

The International Mathematics and Statistics Library (IMSL) is a commercial collection of software libraries that provide a wide range of numerical analysis functions. These libraries are implemented in programming languages such as C, Java, C#.NET, and Fortran. Additionally, a Python interface is available, making the library accessible to a broader range of developers and data scientists.

This section needs to be updated. Please help update this article to reflect recent events or newly available information. (February 2023)

The first IMSL Library for the Fortran language was released in 1970, followed by a C-language version originally called C/Base in 1991, a Java-language version in 2002, and the C#-language version in 2004.

Several recent product releases have involved making IMSL Library functions available from Python. These releases are Python wrappers to IMSL C Library functions (PyIMSL wrappers) and PyIMSL Studio, a prototyping and production application development environment based on Python and the IMSL C Library. The PyIMSL wrappers were first released in August 2008. PyIMSL Studio was introduced in February 2009. PyIMSL Studio is available for download at no charge for non-commercial use or for commercial evaluation.

Current versions:

• IMSL C Library V 8.0 – November 2011
• IMSL C# Library V 6.5.2 – November 2015 (end of life announced as end of 2020)
• IMSL Fortran Library V 7.0 – October 2010
• PyIMSL Studio V 1.5 – August 2009
• PyIMSL wrappers V 1.5 – August 2009
• JMSL Library V 6.1 – August 2010

The IMSL Numerical Libraries are supported on various operating systems, hardware, and compilers.

• Operating system support includes Unix, Linux, Mac OS and Microsoft Windows
• Hardware support includes AMD, Intel, Apple Inc., Cray, Fujitsu, Hitachi, HP, IBM, NEC, SGI and Sun Microsystems
• Compiler support includes Absoft, GCC, Intel, Microsoft, and Portland

• List of numerical-analysis software
• List of numerical libraries

• The IMSL Numerical Libraries home page