get_stored_canonical Subroutine

public pure subroutine get_stored_canonical(matrix, row, column, transpose, processor)

Canonical logic

Arguments

Type IntentOptional Attributes Name
type(dbcsr_type), intent(in) :: matrix
integer, intent(inout) :: row
integer, intent(inout) :: column
logical, intent(inout) :: transpose
integer, intent(out), optional :: processor

Contents

Source Code

get_stored_canonical

Source Code

   PURE SUBROUTINE get_stored_canonical(matrix, row, column, &
      !! Canonical logic
                                        transpose, processor)
      TYPE(dbcsr_type), INTENT(IN)                       :: matrix
      INTEGER, INTENT(INOUT)                             :: row, column
      LOGICAL, INTENT(INOUT)                             :: transpose
      INTEGER, INTENT(OUT), OPTIONAL                     :: processor

      INTEGER                                            :: tmp
      LOGICAL                                            :: straight

! The old way
!straight = matrix%transpose .OR. matrix%symmetry

      straight = matrix%symmetry
      straight = (.NOT. matrix%symmetry) &
                 .OR. &
                 (straight .EQV. .NOT. checker_tr(row, column))
      !transpose = .NOT. straight! .NEQV. transpose
      transpose = straight .EQV. transpose
      IF (.NOT. straight) THEN
         tmp = row
         row = column
         column = tmp
      END IF
      IF (PRESENT(processor)) THEN
         processor = dbcsr_distribution_processor(matrix%dist, row, column)
      END IF
   END SUBROUTINE get_stored_canonical