1IM_ISINT(3)                Library Functions Manual                IM_ISINT(3)
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NAME

6       im_isint,  im_ispng,  im_isuint,  im_isfloat,  im_iscomplex, im_istiff,
7       istifftiled, im_isjpeg, im_isfile, im_ispartial,  im_isvips,  im_isMSB‐
8       first, im_fexists, im_amiMSBfirst - classify image types
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SYNOPSIS

11       #include <vips/vips.h>
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13       int im_isMSBfirst( im )
14       IMAGE *im;
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16       int im_amiMSBfirst( void )
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18       int im_fexists( const char *filename, ... )
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20       int im_istiff( filename )
21       char *filename;
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23       int im_istifftiled( filename )
24       char *filename;
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26       int im_isjpeg( filename )
27       char *filename;
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29       int im_ispng( filename )
30       char *filename;
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32       int im_isppm( filename )
33       char *filename;
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35       int im_isvips( filename )
36       char *filename;
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38       int im_isfile( im )
39       IMAGE *im;
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41       int im_ispartial( im )
42       IMAGE *im;
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44       int im_isint( im )
45       IMAGE *im;
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47       int im_isuint( im )
48       IMAGE *im;
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50       int im_isfloat( im )
51       IMAGE *im;
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53       int im_iscomplex( im )
54       IMAGE *im;
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DESCRIPTION

58       im_fexists(3)  returns  non-zero  if the named file exists and is read‐
59       able. Args as printf(3).
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61       im_istiff(3) tests a file for tiff-ness.
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63       im_istifftiled(3) tests a file for tiff-tiled-ness.
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65       im_isjpeg(3) tests a file for jpeg-ness.
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67       im_ispng(3) tests a file for png-ness.
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69       im_isppm(3) tests a file for PPM/PGM/PBM-ness.
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71       im_isvips(3) tests a file for vips-ness.
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73       im_isMSBfirst(3) returns true (1) if the file is  in  most-significant-
74       byte first form. This is the byte order used on the SPARC architecture,
75       and others. It returns false (0)for intel-order images.
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77       im_amiMSBfirst(3) returns true (1) if this processor is MSB first.
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79       im_isfile(3) returns true if the descriptor corresponds  to  some  disc
80       object, that is, was opened with modes "r", "rw" or "w".
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82       im_ispartial(3) returns true if the descriptor is partial, that is, was
83       opened with mode "p".
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85       The rest of these functions test im->BandFmt, returning  logical  truth
86       (non-zero)  if  BandFmt  is one of a number of possibles, and returning
87       zero if it is not.
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89       im_isint(3) (is integer type) returns true if  im->BandFmt  is  one  of
90       FMTUCHAR, FMTCHAR, FMTUSHORT, FMTSHORT, FMTUINT or FMTINT.
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92       im_isuint(3)  (is unsigned integer type) returns true if im->BandFmt is
93       one of FMTUCHAR, FMTUSHORT or FMTUINT.
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95       im_isfloat(3) (is floating point type) returns true if  im->BandFmt  is
96       one of FMTFLOAT or FMTDOUBLE.
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98       im_iscomplex(3) (is complex type) returns true if im->BandFmt is one of
99       FMTCOMPLEX or FMTDPCOMPLEX.
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101

103       National Gallery, 1993
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SEE ALSO

106       `VIPS  Library  Programmers'  Guide,'  in  accompanying  documentation.
107       im_tiff2vips(3), im_jpeg2vips(3)
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AUTHOR

110       J. Cupitt - 23/7/93
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114                                 11 April 1990                     IM_ISINT(3)
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