libm implementations
--------------------

unix v7 libm by Robert Morris (rhm) around 1979
see: "Computer Approximations" by Hart & Cheney, 1968
used in: plan9, go

cephes by Stephen L. Moshier, 1984-1992
http://www.netlib.org/cephes/
see: "Methods and Programs for Mathematical Functions" by Moshier 1989

fdlibm by K. C. Ng around 1993, updated in 1995?
(1993: copyright notice: "Developed at SunPro ..")
(1995: copyright notice: "Developed at SunSoft ..")
see: "Argument Reduction for Huge Arguments: Good to the Last Bit" by Ng 1992
http://www.netlib.org/fdlibm
used in: netbsd, openbsd, freebsd, bionic, musl

libultim by Abraham Ziv around 2001 (gpl)
(also known as the ibm accurate portable math lib)
see: "Fast evaluation of elementary mathematical functions with correctly rounded last bit" by Ziv 1991
http://web.archive.org/web/20050207110205/http://oss.software.ibm.com/mathlib/
used in: glibc

libmcr by K. C. Ng, 2004
(sun's correctly rounded libm)

mathcw by Nelson H. F. Beebe, 2010?
http://ftp.math.utah.edu/pub/mathcw/
(no sources available?)

sleef by Naoki Shibata, 2010
(simd lib for evaluating elementary functions)
http://shibatch.sourceforge.net/

crlibm by ens-lyon, 2004-2010
http://lipforge.ens-lyon.fr/www/crlibm/
see: crlibm.pdf at http://lipforge.ens-lyon.fr/frs/?group_id=8&release_id=123
see: "Elementary Functions" by Jean-Michel Muller 2005
see: "Handbook of Floating-Point Arithmetic" by (many authors from Lyon) 2009

(closed: intel libm, hp libm for itanium, ..)


libm tests
----------

http://www.netlib.org/fp/ucbtest.tgz
http://www.jhauser.us/arithmetic/TestFloat.html
http://cant.ua.ac.be/old/ieeecc754.html
http://www.loria.fr/~zimmerma/mpcheck/
http://gforge.inria.fr/projects/mpcheck/
http://people.inf.ethz.ch/gonnet/FPAccuracy/Analysis.html
http://www.math.utah.edu/~beebe/software/ieee/
http://www.vinc17.org/research/testlibm/index.en.html
http://www.vinc17.org/research/fptest.en.html
tests in crlibm

multiprecision libs (useful for tests)
http://mpfr.org/
http://www.multiprecision.org/index.php?prog=mpc
http://pari.math.u-bordeaux.fr/
http://www.apfloat.org/apfloat/
http://code.google.com/p/fastfunlib/
scs_lib in crlibm


other
-----

ieee standard: http://754r.ucbtest.org/
extended precision issues: http://www.vinc17.org/research/extended.en.html
correctly rounded mult: http://perso.ens-lyon.fr/jean-michel.muller/MultConstant.html
table based sincos: http://perso.ens-lyon.fr/damien.stehle/IMPROVEDGAL.html
finding worst cases: http://perso.ens-lyon.fr/damien.stehle/WCLR.html
finding worst cases: http://perso.ens-lyon.fr/damien.stehle/DECIMALEXP.html
finding worst cases: http://www.loria.fr/equipes/spaces/slz.en.html
finding worst cases: http://perso.ens-lyon.fr/jean-michel.muller/Intro-to-TMD.htm
fast conversion to fixedpoint: http://stereopsis.com/sree/fpu2006.html
double-double, quad-double arithmetics: http://crd-legacy.lbl.gov/~dhbailey/mpdist/
papers by kahan: http://www.cs.berkeley.edu/~wkahan/
fp paper by goldberg: http://download.oracle.com/docs/cd/E19957-01/806-3568/ncg_goldberg.html