ishl(3I)

NAME
     ISHL, IISHL, JISHL, KISHL - Performs logical shift with zero fill

SYNOPSIS
     ISHL ([I=]i, [SHIFT=]shift)
     IISHL ([I=]i, [SHIFT=]shift)
     JISHL ([I=]i, [SHIFT=]shift)
     KISHL ([I=]i, [SHIFT=]shift)

STANDARDS
     Fortran extensions

DESCRIPTION
     The ISHL, IISHL, JISHL, KISHL intrinsic functions perform a logical
     shift on an integer.  In this shift, the intrinsic shifts the integer,
     left or right, by a specified number of bits.  Bits shifted out of one
     end are lost, and zeros are filled in.  These functions accept the
     following arguments:

     i         Must be of type integer.  For IISHL, must be of type integer
               (KIND=2).  For JISHL, must be of type integer (KIND=4).  For
               KISHL, must be of type integer (KIND=8).  This is the value
               to be shifted.

     shift     Must be of type integer.  This is the direction and distance
               of the shift.

               Positive shifts are left, toward the most significant bit.
               Negative shifts are right, toward the least significant bit.
               If shift is zero, no shift is performed.

     These are elemental intrinsic functions.  The names of these
     intrinsics cannot be passed as arguments.

RETURN VALUES
     The result type and type parameter are the same as i.  The result is
     equal to i logically shifted by shift bits.  Zeros are shifted in from
     the opposite end.

     The integer kind determines the end that the bits are shifted out of.
     For an integer (KIND=4) argument, 32 bits are shifted.  If you want to
     shift a 1-byte or 2-byte argument, declare it as KIND=1 or KIND=2.

SEE ALSO
     Intrinsic Procedures Reference Manual for the printed version of this
     man page.