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### 9.152 `IPARITY`

— Bitwise XOR of array elements

*Description*:Reduces with bitwise XOR (exclusive or) the elements of

`ARRAY`along dimension`DIM`if the corresponding element in`MASK`is`TRUE`

.*Standard*:Fortran 2008 and later

*Class*:Transformational function

*Syntax*:`RESULT = IPARITY(ARRAY[, MASK])`

`RESULT = IPARITY(ARRAY, DIM[, MASK])`

*Arguments*:`ARRAY`Shall be an array of type `INTEGER`

`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`ARRAY`.`MASK`(Optional) shall be of type `LOGICAL`

and either be a scalar or an array of the same shape as`ARRAY`.*Return value*:The result is of the same type as

`ARRAY`.If

`DIM`is absent, a scalar with the bitwise XOR of all elements in`ARRAY`is returned. Otherwise, an array of rank n-1, where n equals the rank of`ARRAY`, and a shape similar to that of`ARRAY`with dimension`DIM`dropped is returned.*Example*:PROGRAM test_iparity INTEGER(1) :: a(2) a(1) = b'00100100' a(2) = b'01101010' ! prints 01001110 PRINT '(b8.8)', IPARITY(a) END PROGRAM

*See also*: