| .TH IM_IOCHECK 3 "11 April 1990" |
| .SH NAME |
| im_pincheck, im_poutcheck, im_piocheck \- checks image descriptors for |
| PIO |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| int im_pincheck( in ) |
| .br |
| IMAGE *in; |
| |
| int im_poutcheck( out ) |
| .br |
| IMAGE *out; |
| |
| .B int im_piocheck( in, out) |
| .br |
| .B IMAGE *in, *out; |
| .SH DESCRIPTION |
| .B im_pincheck(3) |
| checks that an image descriptor is suitable for PIO input. If the descriptor is |
| IM_OPENOUT and the descriptor has been written to, it is automatically |
| `rewound,' that is, it is closed and reopened as an IM_MMAPIN descriptor. |
| |
| im_poutcheck(3) checks that a descriptor is suitable for PIO output. |
| |
| im_piocheck(3) simply calls in_pincheck(3) for image in and im_poutcheck(3) for |
| image out. |
| .SH RETURN VALUE |
| All functions returns 0 on success and -1 on error. |
| .SH SEE\ ALSO |
| im_generate(3), im_open(3). |
| .SH COPYRIGHT |
| National Gallery |
| .SH AUTHOR |
| J. Cupitt \- 23/7/93 |
