int MatSetValuesBlocked(Mat mat,int m,int *idxm,int n,int *idxn,Scalar *v,InsertMode addv)Not Collective
mat | - the matrix |
v | - a logically two-dimensional array of values |
m, idxm | - the number of block rows and their global block indices |
n, idxn | - the number of block columns and their global block indices |
addv | - either ADD_VALUES or INSERT_VALUES, where ADD_VALUES adds values to any existing entries, and INSERT_VALUES replaces existing entries with new values |
Calls to MatSetValuesBlocked() with the INSERT_VALUES and ADD_VALUESoptions cannot be mixed without intervening calls to the assemblyroutines.
MatSetValuesBlocked() uses 0-based row and column numbers in Fortranas well as in C.
Each time an entry is set within a sparse matrix via MatSetValues(), internal searching must be done to determine where to place the thedata in the matrix storage space. By instead inserting blocks ofentries via MatSetValuesBlocked(), the overhead of matrix assembly isreduced.
Location: src/mat/interface/matrix.c
Matrix Index
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