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* Draft of a eigenvalues solver

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(does not support complex and does not re-use the QR decomposition)

* Rewrite the cache friendly product to have only one instance per scalar type !
  This significantly speeds up compilation time and reduces executable size.
  The current drawback is that some trivial expressions might be
  evaluated like conjugate or negate.

* Renamed "cache optimal" to "cache friendly"

* Added the ability to directly access matrix data of some expressions via:
  - the stride()/_stride() methods
  - DirectAccessBit flag (replace ReferencableBit)
This commit is contained in:
Gael Guennebaud
2008-05-12 10:23:09 +00:00
parent dca416cace
commit 45cda6704a
15 changed files with 1286 additions and 364 deletions
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Eigen/src/Core/MathFunctions.h
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@@ -46,7 +46,7 @@ inline int ei_log(int) { ei_assert(false); return 0; }
inline int ei_sin(int) { ei_assert(false); return 0; }
inline int ei_cos(int) { ei_assert(false); return 0; }
#if EIGEN_GNUC_AT_LEAST(4,3)
#if EIGEN_GNUC_AT_LEAST(4,2)
inline int ei_pow(int x, int y) { return int(std::pow(double(x), y)); }
#else
inline int ei_pow(int x, int y) { return std::pow(x, y); }