Initializing help system before first use

problem.sparseBTran

Purpose
Post-multiplies a (row) vector provided by the user by the inverse of the current matrix. Sparse version of problem.btran.
Topic areas
Linear Algebra, Simplex
Synopsis
val, ind = problem.sparseBTran(val, ind)
Arguments
val 
Array containing the non-zero values which are to be post-multiplied by the basis.
ind 
Array containing the indices for the elements in val.
Related controls
Double
ETATOL 
Tolerance on eta elements.

Return value
val 
Array containing the non-zero values resulting from the multiplication.
ind 
Array containing the indices for the elements returned in val.
Further information
If the matrix is in a presolved state, the function will work with the basis for the presolved problem.
Related topics
problem.btran, problem.ftran, problem.sparseFTran.

Parent Topic Methods of the class problem

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