Lahey/GNU Fortran

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8.187 OR — Bitwise logical OR

Description:
Bitwise logical OR.

This intrinsic routine is provided for backwards compatibility with GNU Fortran 77. For integer arguments, programmers should consider the use of the IOR intrinsic defined by the Fortran standard.

Standard:
GNU extension
Class:
Function
Syntax:
RESULT = OR(I, J)
Arguments:

I The type shall be either a scalar INTEGER type or a scalar LOGICAL type.
J The type shall be the same as the type of J.

Return value:
The return type is either a scalar INTEGER or a scalar LOGICAL. If the kind type parameters differ, then the smaller kind type is implicitly converted to larger kind, and the return has the larger kind.
Example:
          PROGRAM test_or
            LOGICAL :: T = .TRUE., F = .FALSE.
            INTEGER :: a, b
            DATA a / Z'F' /, b / Z'3' /
          
            WRITE (*,*) OR(T, T), OR(T, F), OR(F, T), OR(F, F)
            WRITE (*,*) OR(a, b)
          END PROGRAM
     

See also:
Fortran 95 elemental function: IOR