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...and various newline tweaks to make the source more readable (see http://rhodesmill.org/brandon/2012/one-sentence-per-line/)
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OpenLibm
OpenLibm is an effort to have a high quality, portable, standalone
C mathematical library (libm).
It can be used standalone in applications
and programming language implementations.
The project was born out of a need to have a good libm
for the Julia programming langage
that worked consistently across compilers and operating systems,
and in 32-bit and 64-bit environments.
History
The OpenLibm code derives from the
FreeBSD msun implementation,
which in turn derives from FDLIBM 5.3.
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
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
makeormake USEGCC=1to build with GCC. This is the default on Linux and Windows.make USECLANG=1to build with clang. This is the default on OS X.