JacobianTriangle

Returns the Jacobian of mapping between two Triangles.

Interface

INTERFACE
  MODULE PURE FUNCTION JacobianTriangle(from, to, xij) RESULT(ans)
    CHARACTER(*), INTENT(IN) :: from
    !! BIUNIT
    !! UNIT
    !! TRIANGLE
    CHARACTER(*), INTENT(IN) :: to
    !! BIUNIT
    !! UNIT
    !! TRIANGLE
    REAL(DFP), OPTIONAL, INTENT(IN) :: xij(:, :)
    !! nodal coordinates of general TRIANGLE
    !! number of rows=nsd
    !! number of cols=3
    !! xij is needed when `from` or `to` is TRIANGLE
    !! both `from` and to `cannot` be TRIANGLE
    REAL(DFP) :: ans
  END FUNCTION JacobianTriangle
END INTERFACE

from

BIUNIT biunit Triangle
UNIT unit Triangle
TRIANGLE general linear Triangle

to

BIUNIT biunit Triangle
UNIT unit Triangle
TRIANGLE general linear Triangle

note

If any of from or to is set to TRIANGLE, then xij must be provided, which represents the nodal points of a linear TRIANGLE. The number of rows in xij is nsd and the number of columns are 3.

info

Both from and to cannot be set to TRIANGLE.

Interface​

Interface