.TH IM_ROTATION 3 "5 December 1991"
.SH NAME
im_rot180, im_rot270, im_rot90, im_fliphor, im_flipver \- rotate and flip 
an image
.SH SYNOPSIS
.B #include <vips/vips.h>

.B int im_rot180(in, out)
.br
.B IMAGE *in, *out;

.B int im_rot270(in, out)
.br
.B IMAGE *in, *out;

.B int im_rot90(in, out)
.br
.B IMAGE *in, *out;

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

.B int im_flipver(in, out)
.br
.B IMAGE *in, *out;
.SH DESCRIPTION
im_rot180(), im_rot270() and im_rot90(), rotate the input image in by 180,
270 and 90 degrees clockwise.  im_fliphor() and im_flipver(), flip in 
horizontally and vertically respectively. All functions work for any size
image, any type and any number of bands. All also work for LABPACK coded
images.
.SH RETURN VALUE
All functions return 0 on success and -1 on error.
.SH SEE\ ALSO
rot180(1)
.SH AUTHOR
N. Dessipris \- 5/12/1991