Initializing help system before first use

problem.sparseFTran

Purpose
Pre-multiplies a (column) vector provided by the user by the inverse of the current matrix. Sparse version of problem.ftran.
Topic areas
Linear Algebra, Simplex
Synopsis
val, ind = problem.sparseFTran(val, ind)
Arguments
val 
Array containing the non-zero values which are to be 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.ftran, problem.btran, problem.sparseBTran.

Parent Topic Methods of the class problem

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