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SIMD Math Test

A performance comparison between different implementations of an SIMD vector using SSE2. The code is a modified version of the source code to Designing Fast Cross-Platform SIMD Vector Libraries by Gustavo Oliveira.

VMath
An SIMD implementation where the __m128 data type is typedefed as a 4D vector.
XNAMath
Microsoft implementation included with DirectX.
VClass
An SIMD implementation where the __m128 data type is wrapped in a C++ class and used as a 4D vector.
VClassTypedef
An SIMD implementation where the __m128 data type is typedefed. A 4D vector is then built upon the __m128 typedef.
VClassSIMDType
An SIMD implementation where the __m128 data type is wrapped in a C++ class. A 4D vector is then built upon the SIMD class.
The goal of this comparison is to see if abstracting a low level SIMD interface and then using that interface to create math classes is a viable approach. This is the subject of a series of articles on #AltDevBlogADay.

Defining an SIMD Interface

Thanks

Thanks to Gustavo Oliveira for allowing the use of his source code.