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JacobianLine

Returns the Jacobian of mapping between two lines.

Interface​

INTERFACE
  MODULE PURE FUNCTION JacobianLine(from, to, xij) RESULT(ans)
    CHARACTER(*), INTENT(IN) :: from
    !! BIUNIT
    !! UNIT
    !! LINE
    CHARACTER(*), INTENT(IN) :: to
    !! BIUNIT
    !! UNIT
    !! LINE
    REAL(DFP), OPTIONAL, INTENT(IN) :: xij(:, :)
    !! nodal coordinates of general line (segment)
    !! number of rows=1
    !! number of cols=2
    !! xij is needed when from or to are LINE
    !! both from and to cannot be LINE
    REAL(DFP) :: ans
  END FUNCTION JacobianLine
END INTERFACE
from
  • BIUNIT biunit line
  • UNIT unit line
  • LINE general LINE
to
  • BIUNIT biunit line
  • UNIT unit line
  • LINE general LINE
note

If any of from or to is set to LINE, then xij must be provided, which represents the end points of a line segment.

info

Both from and to cannot be set to LINE.