MatVec

This routine performs matrix vector multiplication between CSRMatrix and dense vector.

Calling example:

CALL MatVec(CSRMatrix_::obj, Real::x(:), Real::y(:)[, Bool::transp])
CALL MatVec(Real::A(:), Integer::JA(:), Real::x(:), Real::y(:))

example 1

$$y= Ax$$

CALL MatVec(CSRMatrix_::obj, Real::x(:), Real::y(:))

example 2

$$y= y + s*Ax$$

CALL MatVec(CSRMatrix_::obj, Real::x(:), Real::y(:), Bool::addContribution, REAL::scale)

Interface 1

܀ MatVec(obj, x, y, transp)

INTERFACE MatVec
  MODULE SUBROUTINE csrMat_MatVec1(obj, x, y, isTranspose, addContribution, &
    & scale)
    TYPE(CSRMatrix_), INTENT(IN) :: obj
    REAL(DFP), INTENT(IN) :: x(:)
    REAL(DFP), INTENT(INOUT) :: y(:)
    LOGICAL(LGT), OPTIONAL, INTENT(IN) :: isTranspose
    LOGICAL(LGT), OPTIONAL, INTENT(IN) :: addContribution
    REAL(DFP), OPTIONAL, INTENT(IN) :: scale
  END SUBROUTINE csrMat_MatVec1
END INTERFACE MatVec

️܀ See example

TODO

↢

Interface 2

܀ MatVec(A, JA, x, y)

INTERFACE MatVec
  MODULE SUBROUTINE csrMat_MatVec2(A, JA, x, y, addContribution, &
    & scale)
    REAL(DFP), INTENT(IN) :: A(:)
    INTEGER(I4B), INTENT(IN) :: JA(:)
    REAL(DFP), INTENT(IN) :: x(:)
    REAL(DFP), INTENT(INOUT) :: y(:)
    LOGICAL(LGT), OPTIONAL, INTENT(IN) :: addContribution
    REAL(DFP), OPTIONAL, INTENT(IN) :: scale
  END SUBROUTINE csrMat_MatVec2
END INTERFACE MatVec

️܀ See example

TODO

↢