Find a way to speed up binary operation, Workspace iterator are not optimized

[Laurent Chapon]

(In [2219]) re#509 Checked a quick ExplicitMinus for substraction of two 2D Workspace. Very dirty, no validation, just to try to compare speed with Minus (using iterator on workspaces). On Linux, using HRPD data, this is faster by a factor 5 !!

[Russell Taylor]

(In [2243]) Tighten up the checks on workspace dimension compatibility in binary operations. Re #509.

[Russell Taylor]

(In [2249]) Major overhaul of binary operations should make them much faster. Also introduced a typedef for out workspace data storage (std::vector<double>): MantidVec. Re #509.

[Russell Taylor]

(In [2257]) * The errorHelper will be helping no more.

• Added progress reporting to binary operations
• Some doxygen fixes

Example improvements in binary operation speed, based on 10k Merlin spectra (old values in brackets).

Windows Linux(s1)

Plus 0.9 (4.5) 1.4 (6.8) seconds Minus 1.0 (4.3) 1.4 (7.9) seconds Multiply 0.8 (4.0) 1.2 (6.6) seconds Divide 4.1 (7.9) 1.9 (6.6) seconds

Re #509.

[Russell Taylor]

(In [2268]) The workspace factory now copies over the X data when creating a workspace that's the same size as its parent. Actually, it's been doing this since commit 2249, but it now also preserves or restores sharing of the X vectors. Have also added a method (setX) to MatrixWorkspace to set all X data in one shot. Re #509.

[Russell Taylor]

(In [2269]) Fix test. Re #509.

[Stuart Campbell]

This ticket has been transferred to github issue ​1357