im_isint(3)
NAME
im_isint, im_ispng, im_isuint, im_isfloat, im_isscalar, im_iscomplex,
im_istiff, istifftiled, im_isjpeg, im_isfile, im_ispartial, im_isvips,
im_isMSBfirst, im_fexists, im_amiMSBfirst - classify image types
SYNOPSIS
#include <vips/vips.h> int im_isMSBfirst( im ) IMAGE *im; int im_amiMSBfirst( void ) int im_fexists( const char *filename, ... ) int im_istiff( filename ) char *filename; int im_istifftiled( filename ) char *filename; int im_isjpeg( filename ) char *filename; int im_ispng( filename ) char *filename; int im_isppm( filename ) char *filename; int im_isvips( filename ) char *filename; int im_isfile( im ) IMAGE *im; int im_ispartial( im ) IMAGE *im; int im_isint( im ) IMAGE *im; int im_isuint( im ) IMAGE *im; int im_isfloat( im ) IMAGE *im; int im_isscalar( im ) IMAGE *im; int im_iscomplex( im ) IMAGE *im;
DESCRIPTION
im_fexists(3) returns non-zero if the named file exists and is readable. Args as printf(3).
im_istiff(3) tests a file for tiff-ness.
im_istifftiled(3) tests a file for tiff-tiled-ness.
im_isjpeg(3) tests a file for jpeg-ness.
im_ispng(3) tests a file for png-ness.
im_isppm(3) tests a file for PPM/PGM/PBM-ness.
im_isvips(3) tests a file for vips-ness.
im_isMSBfirst(3) returns true (1) if the file is in most-significantbyte first form. This is the byte order used on the SPARC architecture,
and others. It returns false (0)for intel-order images.
im_amiMSBfirst(3) returns true (1) if this processor is MSB first.
im_isfile(3) returns true if the descriptor corresponds to some disc
object, that is, was opened with modes "r", "rw" or "w".
im_ispartial(3) returns true if the descriptor is partial, that is, was
opened with mode "p".
The rest of these functions test im->BandFmt, returning logical truth
(non-zero) if BandFmt is one of a number of possibles, and returning
zero if it is not.
im_isint(3) (is integer type) returns true if im->BandFmt is one of
FMTUCHAR, FMTCHAR, FMTUSHORT, FMTSHORT, FMTUINT or FMTINT.
im_isuint(3) (is unsigned integer type) returns true if im->BandFmt is
one of FMTUCHAR, FMTUSHORT or FMTUINT.
im_isfloat(3) (is floating point type) returns true if im->BandFmt is
one of FMTFLOAT or FMTDOUBLE.
im_isscalar(3) (is scalar type) returns true if im->BandFmt is one of
FMTUCHAR, FMTCHAR, FMTUSHORT, FMTSHORT, FMTUINT, FMTINT, FMTFLOAT or
FMTDOUBLE.
im_iscomplex(3) (is complex type) returns true if im->BandFmt is one of
FMTCOMPLEX or FMTDPCOMPLEX.
COPYRIGHT
National Gallery, 1993
SEE ALSO
im_tiff2vips(3), im_jpeg2vips(3)
AUTHOR
- J. Cupitt - 23/7/93