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

6       im_andimage,    im_andconst,    im_and_vec,   im_orimage,   im_orconst,
7       im_or_vec, im_eorimage, im_eorconst, im_eor_vec - boolean operations on
8       unsigned char images
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SYNOPSIS

11       #include <vips/vips.h>
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13       int im_andimage(a, b, out)
14       IMAGE *a, *b, *out;
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16       int im_andconst(a, out, c)
17       IMAGE *a, *out;
18       double c;
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20       int im_and_vec(a, out, n, v)
21       IMAGE *a, *out;
22       int n;
23       double *v;
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25       int im_orimage(a, b, out)
26       IMAGE *a, *b, *out;
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28       int im_orconst(a, out, c)
29       IMAGE *a, *out;
30       double c;
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32       int im_or_vec(a, out, n, v)
33       IMAGE *a, *out;
34       int n;
35       double *v;
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37       int im_eorimage(a, b, out)
38       IMAGE *a, *b, *out;
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40       int im_eorconst(a, out, c)
41       IMAGE *a, *out;
42       double c;
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44       int im_eor_vec(a, out, n, v)
45       IMAGE *a, *out;
46       int n;
47       double *v;
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DESCRIPTION

51       Perform bitwise logical operations on integer images.
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53       im_andimage(3)  performs  bitwise and between corresponding pixels in a
54       and b, writing the result to out.  Both images must be  the  same  size
55       and have the same number of bands.  They can have any integer type.
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57       im_andconst(3)  performs  bitwise  and between pixels in a and a single
58       constant value.  im_and_vec(3) lets you specify n  constants,  one  per
59       band.
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61       im_orimage(3) and im_eorimage(3) behave similarly. Use im_eorconst( in,
62       out, -1 ) or im_invert(3) as a not operator.
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RETURN VALUE

66       All functions return 0 on success and -1 on error.
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SEE ALSO

69       im_ifthenelse(3), im_equal(3).
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72       National Gallery, 1992
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AUTHOR

75       J. Cupitt
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79                                30 October 1992                 IM_ANDIMAGE(3)
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