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| lis_matrix_scale(3f) | Lis Library Functions | lis_matrix_scale(3f) |
NAME
lis_matrix_scale - scale the matrixSYNOPSIS
subroutine lis_matrix_scale(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR d, LIS_INTEGER action, LIS_INTEGER ierr);DESCRIPTION
Scale matrix A.INPUT
- i
- The row number of the matrix
- j
- The column number of the matrix
- value
- The scalar value to be assigned
- A
- The matrix
- b
- The vector
- action
- LIS_SCALE_JACOBI
- Jacobi scaling D^-1 A x = D^-1 b, where D represents the diagonal of A=(a_ij)
- LIS_SCALE_SYMM_DIAG
- Diagonal scaling D^-1/2 A D^-1/2 x = D^-1/2 b, where D^-1/2 represents the diagonal matrix with (a_ii)^-1/2 as the diagonal
OUTPUT
- d
- The vector which stores the diagonal elements of D^-1 or D^-1/2
SEE ALSO
lis(3)http://www.ssisc.org/lis/
| 28 Aug 2014 | Man Page |
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