.TH SHIFT 3 "30 October 1992"
.SH NAME
im_shiftleft, im_shiftright \- bit shift operations
.SH SYNOPSIS
.B #include <vips/vips.h>

.B int im_shiftleft( in, out, n )
.br
.B IMAGE *in, *out;
.br
.B int n;

.B int im_shiftright( in, out, n )
.br
.B IMAGE *in, *out;
.br
.B int n;

.SH DESCRIPTION
Shift integer images n bits left or right. Shifts on signed images are
sign-preserving.

.SH RETURN VALUE
All functions return 0 on success and -1 on error.
.SH SEE ALSO
im_ifthenelse(3), im_equal(3), im_andimage(3).
.SH COPYRIGHT
National Gallery, 1992
.SH AUTHOR
J. Cupitt