19fe53caeSViral B. Shah# OpenLibm 2ccd319c0SViral B. Shah 3ce69bf1fSAlex Arslan[](https://travis-ci.org/JuliaMath/openlibm) 4ce69bf1fSAlex Arslan[](https://ci.appveyor.com/project/ararslan/openlibm-19152/branch/master) 5769a422fSViral B. Shah 6532fe48cSViral B. Shah[OpenLibm](http://www.openlibm.org) is an effort to have a high quality, portable, standalone 7e27d5a2cSWaldir PimentaC mathematical library ([`libm`](http://en.wikipedia.org/wiki/libm)). 885a0f204SWaldir PimentaIt can be used standalone in applications and programming language 985a0f204SWaldir Pimentaimplementations. 10850280a8SViral B. Shah 1185a0f204SWaldir PimentaThe project was born out of a need to have a good `libm` for the 1285a0f204SWaldir Pimenta[Julia programming langage](http://www.julialang.org) that worked 1385a0f204SWaldir Pimentaconsistently across compilers and operating systems, and in 32-bit and 1485a0f204SWaldir Pimenta64-bit environments. 1511f62e05SViral B. Shah 169fe53caeSViral B. Shah## Platform support 17842286d7SViral B. Shah 18*74b54c71SViral B. ShahOpenLibm builds on Linux, Mac OS X, Windows, FreeBSD, OpenBSD, and 19*74b54c71SViral B. ShahDragonFly BSD. It builds with both GCC and clang. Although largely 20*74b54c71SViral B. Shahtested and widely used on the x86 and x86-64 architectures, OpenLibm 21*74b54c71SViral B. Shahalso supports arm, aarch64, ppc64le, and mips. 22842286d7SViral B. Shah 239fe53caeSViral B. Shah## Build instructions 244164da0dSViral B. Shah 25bf188aebSAlex Arslan1. Use GNU Make to build OpenLibm. This is `make` on most systems, but `gmake` on BSDs. 26cb6c8219SViral B. Shah2. Use `make USEGCC=1` to build with GCC. This is the default on 2785a0f204SWaldir Pimenta Linux and Windows. 28bf188aebSAlex Arslan3. Use `make USECLANG=1` to build with clang. This is the default on OS X, FreeBSD, 29bf188aebSAlex Arslan and OpenBSD. 30f3d50093SViral B. Shah4. Architectures are auto-detected. Use `make ARCH=i386` to force a 31f3d50093SViral B. Shah build for i386. Other supported architectures are i486, i586, and 32f3d50093SViral B. Shah i686. GCC 4.8 is the minimum requirement for correct codegen on 33f3d50093SViral B. Shah older 32-bit architectures. 340001d589SViral B. Shah 350001d589SViral B. Shah## Acknowledgements 360001d589SViral B. Shah 370001d589SViral B. ShahPowerPC support for openlibm was graciously sponsored by IBM. 38
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