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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.