9.200 NOT — Logical negation

Description:

NOT returns the bitwise Boolean inverse of I.

Standard:

Fortran 95 and later

Class:

Elemental function

Syntax:

RESULT = NOT(I)

Arguments:
I The type shall be INTEGER.
Return value:

The return type is INTEGER, of the same kind as the argument.

See also:

IAND, IEOR, IOR, IBITS, IBSET, IBCLR

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https://gcc.gnu.org/onlinedocs/gcc-6.4.0/gfortran/NOT.html