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## OpenLibm # OpenLibm
[![Build Status](https://travis-ci.org/JuliaLang/openlibm.svg?branch=master)](https://travis-ci.org/JuliaLang/openlibm) [![Build Status](https://travis-ci.org/JuliaLang/openlibm.svg?branch=master)](https://travis-ci.org/JuliaLang/openlibm)
@ -12,27 +12,15 @@ The project was born out of a need to have a good `libm` for the
consistently across compilers and operating systems, and in 32-bit and consistently across compilers and operating systems, and in 32-bit and
64-bit environments. 64-bit environments.
### History ## Platform support
The OpenLibm code derives from the [FreeBSD OpenLibm builds on Linux, Mac OS X, Windows, and FreeBSD. It builds
msun](http://svnweb.freebsd.org/base/head/lib/msun/) and [OpenBSD with both GCC and clang. Although largely tested on x86, it also
libm](http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libm/src/) includes experimental support for ARM.
implementations, which in turn derives from [FDLIBM
5.3](http://www.netlib.org/fdlibm/). As a result, it includes a number
of fixes and updates to FDLIBM that have accumulated over the years in
`msun`, and optimized versions of many functions.
### Platform support ## Build instructions
OpenLibm builds on Linux, Mac OS X, and Windows, and with little
effort, should build on FreeBSD as well. It builds with both GCC and
clang. Although largely tested on x86, it also includes experimental
support for ARM. The original `msun` also includes support for mips,
sparc64, powerpc, ia64, and alpha. These are present in the OpenLibm
source tree, but no attempt has been made to build any of these.
### Build instructions
1. `make` or `make USEGCC=1` to build with GCC. This is the default on 1. `make` or `make USEGCC=1` to build with GCC. This is the default on
Linux and Windows. Linux and Windows.
2. `make USECLANG=1` to build with clang. This is the default on OS X. 2. `make USECLANG=1` to build with clang. This is the default on OS X
and FreeBSD.