9.159 ISHFT — Shift bits

Description:

ISHFT returns a value corresponding to I with all of the bits shifted SHIFT places. A value of SHIFT greater than zero corresponds to a left shift, a value of zero corresponds to no shift, and a value less than zero corresponds to a right shift. If the absolute value of SHIFT is greater than BIT_SIZE(I), the value is undefined. Bits shifted out from the left end or right end are lost; zeros are shifted in from the opposite end.

Standard:

Fortran 90 and later, has overloads that are GNU extensions

Class:

Elemental function

Syntax:

RESULT = ISHFT(I, SHIFT)

Arguments:

I	The type shall be INTEGER.
SHIFT	The type shall be INTEGER.

Return value:

The return value is of type INTEGER and of the same kind as I.

Specific names:

Name	Argument	Return type	Standard
ISHFT(A)	INTEGER A	INTEGER	Fortran 90 and later
BSHFT(A)	INTEGER(1) A	INTEGER(1)	GNU extension
IISHFT(A)	INTEGER(2) A	INTEGER(2)	GNU extension
JISHFT(A)	INTEGER(4) A	INTEGER(4)	GNU extension
KISHFT(A)	INTEGER(8) A	INTEGER(8)	GNU extension

See also:

ISHFTC