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Return ValueThe return value is of the same type and kind as the argument I. It is the value of the argument Ilogically shifted by SHIFT bits. If SHIFT is positive, the shift is to the left. If SHIFT is negative,the shift is to the right. Zeroes are shifted in at the ends and the bits shifted out are lost.ISHFTC 77Perform a circular shift of the rightmost bits.SynopsisISHIFTC(I, SHIFT [,SIZE])ArgumentsI and SHIFT are integer values. The absolute value of SHIFT must be less than or equal to theoptional argument SIZE. If present, SIZE must not exceed the value BIT_SIZE(I); if SIZE isnot present, the function acts as if it were present with the value BIT_SIZE(I).Return ValueThe result is the value of the sub-group of SIZE bits shifted by SHIFT positions within the subgroup,all other bits remain the same and remain in the same position. If the SIZE argument is notpresent, the circular shift is over the complete group of bits and all of the bits are shifted bySHIFT positions. If SHIFT is positive, the shift is to the left. If SHIFT is negative, the shift is tothe right.IZEXT § 77Zero-extend the argument.SynopsisIZEXT(A)ArgumentsThe argument A is of type logical or integer.Return ValueThe return value is a zero-extended short integer of the argument.Fortran Intrinsics 217