IALL (The GNU Fortran Compiler) (original) (raw)
8.136 IALL — Bitwise AND of array elements ¶
Synopsis:
| RESULT = IALL(ARRAY[, MASK]) |
|---|
| RESULT = IALL(ARRAY, DIM[, MASK]) |
Description:
Reduces with bitwise AND the elements of ARRAY along dimension DIMif the corresponding element in MASK is TRUE.
Class:
Transformational function
Arguments:
| ARRAY | Shall be an array of type INTEGER or UNSIGNED |
|---|---|
| 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 LOGICALand 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 ALL of all elements inARRAY 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_iall INTEGER(1) :: a(2)
a(1) = b'00100100' a(2) = b'01101010'
! prints 00100000 PRINT '(b8.8)', IALL(a) END PROGRAM
Standard:
Fortran 2008 and later, extension for UNSIGNED (see Unsigned integers)
See also:
IANY — Bitwise OR of array elements,
IPARITY — Bitwise XOR of array elements,
IAND — Bitwise logical and