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| author |  Gael Guennebaud <g.gael@free.fr> | 2016-05-24 22:14:34 +0200 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2016-05-24 22:14:34 +0200 |
| commit | 9216abe28df723a21f9cb26b28a2e40e021948df (patch) | |
| tree | eb9aa66c9618780fa913b1bf4df865d281c8dde2 /doc/PreprocessorDirectives.dox | |
| parent | 0fd953c217d4cb042ea9521a2bfce7683eb6e915 (diff) | |
Document EIGEN_UNALIGNED_VECTORIZE.
Diffstat (limited to 'doc/PreprocessorDirectives.dox')
| -rw-r--r-- | doc/PreprocessorDirectives.dox | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/PreprocessorDirectives.dox b/doc/PreprocessorDirectives.dox index 7f60c70c6..2f9c4c370 100644 --- a/doc/PreprocessorDirectives.dox +++ b/doc/PreprocessorDirectives.dox @@ -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. |