Blue Sail Software has just released a beta version of its new C++ math library - SCTL (Scientific Computing Template Library).
Using finely tuned inline assembly coding within
specialized templated classes, SCTL provides high-performance
processing speed combined with general ease of use.
More information along with some example codes can be found at:
http://www.bluesailsoftware.com/software/sctl/
Our distribution system is unique in that most of the code is located
in header files and is free to download and distribute under the
terms of the license:
http://www.bluesailsoftware.com/software/license/
Code not distributed as header-files is released only as compiled
object code. Non-optimized versions are free for download
(i586-compatible only for now) and non-free optimized versions are
available.
Email scott@bluesailsoftware.com for more info.