PARITY — Reduction with exclusive OR

PARITY()

Calculates the parity, i.e. the reduction using .XOR., of MASK along dimension DIM.

Parameters

• MASK – Shall be an array of type LOGICAL

• DIM – (Optional) shall be a scalar of type INTEGER with a value in the range from 1 to n, where n equals the rank of MASK.

Returns

The result is of the same type as MASK.

Standard:

Fortran 2008 and later

Class:

Transformational function

Syntax:

RESULT = PARITY(MASK[, DIM])

Example:

PROGRAM test_sum
  LOGICAL :: x(2) = [ .true., .false. ]
  print *, PARITY(x) ! prints "T" (true).
END PROGRAM