macstl

macstl offers a new implementation of std::valarray optimized for SIMD on PowerPCs and Pentiums. It runs 3.6x to 16.2x faster than hand-coded scalar loops. A portable SIMD vec class lets you work with low-level SIMD instructions equivalently cross-platform.

The Mach copy-on-write vector is a partial specialization of std::vector for the Mach allocator. It neatly uses the OS vm_copy facility to "get around" thread safety issues when doing copy-on-write and reference counting. As a result, std::vector can be copied, passed back by value and enlarged without the same overheads.

• Fixed class scope vector typedefs, missing PowerPC intrinsics header, vector initializer syntax for FSF 3.4 [ILi*].
• Added complex conj function for vec and valarray [ILi*].
• Improved valarray expression performance: v1 [slice].
• Improved valarray code generation: CSE, inlining limits, literal terms, array term elements, statarray construction, compiling -faltivec without -maltivec for Apple gcc 4.0.
• Added refarray class [PBa].
• Fixed buffer overflow in integral valarrays for SSE2; added optimizations for valarray expressions: v1 >> k and v1 << k for SSE2 [MSh].
• Fixed accumulate array dispatch, integer constant overflow, literal benchmark test for SSE2; fixed chunking iterator pessimization for gcc 3.3/4 [ILi, RBe].
• Added makefile for Linux x86 [ILi*].
• Added support for FSF gcc 3.4 on Cygwin 1.5.
• Added differently typed valarray construct and assign from terms, valarrays of sized booleans, select with sized booleans [ILi].
• Fixed unix makefile directory.
• Added macstlizer conversions: abs, abss, cmpeq, max, min.
• Improved readme file.