ISHFT(I, SHIFT)

Purpose

Performs a logical shift.

Class

Elemental function

Argument type and attributes

I

An INTENT(IN) INTEGER

SHIFT

An INTENT(IN) INTEGER. The absolute value of SHIFT must be less than or equal to BIT_SIZE (I).

Result type and attributes

Same as I.

Result value

• The result has the value obtained by shifting the bits of I by SHIFT positions.
• If SHIFT is positive, the shift is to the left; if SHIFT is negative, the shift is to the right; and, if SHIFT is zero, no shift is performed.
• Bits shifted out from the left or from the right, as appropriate, are lost.
• Vacated bits are filled with zeros.
• The bits are numbered 0 to BIT_SIZE(I)-1, from right to left.