92 lines
2.1 KiB
Groff
92 lines
2.1 KiB
Groff
.TH IM_ISINT 3 "11 April 1990"
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.SH NAME
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im_isint, im_isuint, im_isfloat, im_isscalar, im_iscomplex,
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im_isfile, im_ispartial, im_isvips, im_isMSBfirst,
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im_fexists, im_amiMSBfirst \- classify image types
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.SH SYNOPSIS
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.B #include <vips/vips.h>
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int im_isMSBfirst( im )
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.br
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IMAGE *im;
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int im_amiMSBfirst( void )
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int im_fexists( const char *filename, ... )
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int im_isvips( filename )
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.br
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char *filename;
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int im_isfile( im )
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.br
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IMAGE *im;
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int im_ispartial( im )
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.br
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IMAGE *im;
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int im_isint( im )
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.br
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IMAGE *im;
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int im_isuint( im )
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.br
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IMAGE *im;
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int im_isfloat( im )
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.br
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IMAGE *im;
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int im_isscalar( im )
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.br
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IMAGE *im;
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int im_iscomplex( im )
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.br
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IMAGE *im;
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.SH DESCRIPTION
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im_fexists(3) returns non-zero if the named file exists and is readable. Args
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as printf(3).
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im_isvips(3) tests a file for vips-ness.
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im_isMSBfirst(3) returns true (1) if the file is in most-significant-byte first
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form. This is the byte order used on the SPARC architecture, and others. It
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returns false (0)for intel-order images.
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im_amiMSBfirst(3) returns true (1) if this processor is MSB first.
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im_isfile(3) returns true if the descriptor corresponds to some disc object,
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that is, was opened with modes "r", "rw" or "w".
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im_ispartial(3) returns true if the descriptor is partial,
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that is, was opened with mode "p".
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The rest of these functions test im\-\>BandFmt, returning logical truth
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(non-zero) if BandFmt is one of a number of possibles, and returning zero if
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it is not.
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im_isint(3) (is integer type) returns true if im\-\>BandFmt is one of FMTUCHAR,
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FMTCHAR, FMTUSHORT, FMTSHORT, FMTUINT or FMTINT.
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im_isuint(3) (is unsigned integer type) returns true if im\-\>BandFmt is one of
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FMTUCHAR, FMTUSHORT or FMTUINT.
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im_isfloat(3) (is floating point type) returns true if im\-\>BandFmt is one of
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FMTFLOAT or FMTDOUBLE.
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im_isscalar(3) (is scalar type) returns true if im\-\>BandFmt is one of FMTUCHAR,
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FMTCHAR, FMTUSHORT, FMTSHORT, FMTUINT, FMTINT, FMTFLOAT or FMTDOUBLE.
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im_iscomplex(3) (is complex type) returns true if im\-\>BandFmt is one of
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FMTCOMPLEX or FMTDPCOMPLEX.
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.SH COPYRIGHT
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National Gallery, 1993
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.SH SEE ALSO
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im_tiff2vips(3), im_jpeg2vips(3)
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.SH AUTHOR
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J. Cupitt \- 23/7/93
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