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IBits(I, Pos, Len)
IBits: INTEGER function, the `KIND=' value of the type being that of argument I.
I: INTEGER; scalar; INTENT(IN).
Pos: INTEGER; scalar; INTENT(IN).
Len: INTEGER; scalar; INTENT(IN).
Intrinsic groups: mil, f90, vxt.
Description:
Extracts a subfield of length Len from I, starting from bit position Pos and extending left for Len bits. The result is right-justified and the remaining bits are zeroed. The value of `Pos+Len' must be less than or equal to the value `BIT_SIZE(I)'. See Bit_Size Intrinsic.