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Manual Reference Pages  - iparity (3)

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NAME

iparity(3f) - [FORTRAN:INTRINSIC:BIT MANIPULATION] Bitwise exclusive or of array elements

CONTENTS

Syntax
Description
Arguments
Return Value
Example
Standard
Class
See Also

SYNTAX

o	result = iparity(array[, mask])
o	result = iparity(array, dim[, mask])

DESCRIPTION

Reduces with bitwise XOR (exclusive OR) the elements of ARRAY along dimension DIM if the corresponding element in MASK is TRUE.

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

Sample program:

   program demo_iparity
     integer, dimension(2) :: a

     a(1) = b’00100100’
     a(2) = b’01101010’

     ! prints 01001110
     print ’(b8.8)’, iparity(a)
   end program demo_iparity

STANDARD

[[Fortran 2008]] and later

CLASS

Transformational function

SEE ALSO

[[iany]], [[iall]], [[ieor]], [[parity]]

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iparity (3)

March 18, 2019

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