sub_matrix_modsub_matrix_modSubMatrixModsub_matrix_modSubMatrixModSubMatrixMod (Operator)

Name

sub_matrix_modsub_matrix_modSubMatrixModsub_matrix_modSubMatrixModSubMatrixMod — Subtract two matrices.

Signature

sub_matrix_mod( : : MatrixAID, MatrixBID : )

The operator sub_matrix_modsub_matrix_modSubMatrixModsub_matrix_modSubMatrixModSubMatrixMod computes the difference of the input matrices MatrixAMatrixAMatrixAMatrixAMatrixAmatrixA and MatrixBMatrixBMatrixBMatrixBMatrixBmatrixB given by the matrix handles MatrixAIDMatrixAIDMatrixAIDMatrixAIDMatrixAIDmatrixAID and MatrixBIDMatrixBIDMatrixBIDMatrixBIDMatrixBIDmatrixBID. Both matrices must have identical dimensions. The input matrix MatrixAMatrixAMatrixAMatrixAMatrixAmatrixA is overwritten with the result. Access to the elements of the matrix is possible e.g. with the operator get_full_matrixget_full_matrixGetFullMatrixget_full_matrixGetFullMatrixGetFullMatrix. The formula for the calculation of the result is:

  MatrixAMatrixAMatrixAMatrixAMatrixAmatrixA = MatrixAMatrixAMatrixAMatrixAMatrixAmatrixA - MatrixBMatrixBMatrixBMatrixBMatrixBmatrixB.

Example:


            /   3.0   1.0  -2.0  \                /   2.0   8.0  -3.0  \
  MatrixA = |  -5.0   7.0   2.0  |      MatrixB = |  -4.0  -1.0   5.0  |
            \  -9.0  -4.0   1.0  /                \   2.0  -4.0   7.0  /

                 /   1.0  -7.0   1.0  \
  ->   MatrixA = |  -1.0   8.0  -3.0  |
                 \ -11.0   0.0  -6.0  /

Attention

sub_matrix_modsub_matrix_modSubMatrixModsub_matrix_modSubMatrixModSubMatrixMod modifies the content of an already existing matrix.

Parallelization

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Processed without parallelization.

Parameters

MatrixAIDMatrixAIDMatrixAIDMatrixAIDMatrixAIDmatrixAID (input_control) matrix → (integer)

Matrix handle of the input matrix A.

MatrixBIDMatrixBIDMatrixBIDMatrixBIDMatrixBIDmatrixBID (input_control) matrix → (integer)

Matrix handle of the input matrix B.

Result

If the parameters are valid, the operator sub_matrix_modsub_matrix_modSubMatrixModsub_matrix_modSubMatrixModSubMatrixMod returns the value 2 (H_MSG_TRUE). If necessary, an exception is raised.