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Document EIGEN_UNALIGNED_VECTORIZE.

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Gael Guennebaud 2016-05-24 22:14:34 +02:00
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doc/PreprocessorDirectives.dox
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@ -108,6 +108,9 @@ run time. However, these assertions do cost time and can thus be turned off.
See \ref TopicMultiThreading for details.
- \b EIGEN_DONT_VECTORIZE - disables explicit vectorization when defined. Not defined by default, unless
alignment is disabled by %Eigen's platform test or the user defining \c EIGEN_DONT_ALIGN.
- \b EIGEN_UNALIGNED_VECTORIZE - disables/enables vectorization with unaligned stores. Default is 1 (enabled).
If set to 0 (disabled), then expression for which the destination cannot be aligned are not vectorized (e.g., unaligned
small fixed size vectors or matrices)
- \b EIGEN_FAST_MATH - enables some optimizations which might affect the accuracy of the result. This currently
enables the SSE vectorization of sin() and cos(), and speedups sqrt() for single precision. Defined to 1 by default.
Define it to 0 to disable.