35 lines
828 B
Groff
35 lines
828 B
Groff
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.TH MACROS 3 "11 April 1990"
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.SH NAME
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IM_RINT, IM_MAX, IM_MIN \- misc math macros
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.SH SYNOPSIS
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.B #include <vips/vips.h>
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int IM_RINT( float )
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.br
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any IM_MAX( any, any )
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.br
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any IM_MIN( any, any )
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.SH DESCRIPTION
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These macros provide some simple but fast math functions --- IM_MAX(3)
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returns the maximum of its two arguments, IM_MIN(3) the smallest, and
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IM_RINT(3) rounds a float or double to the nearest integer.
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Beware: these macros may evaluate their argument more than once, so you MUST
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NOT use ++,--, or a function call in their argument lists.
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They are defined as:
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#define IM_MAX(A,B) ((A)>(B)?(A):(B))
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#define IM_MIN(A,B) ((A)<(B)?(A):(B))
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#define IM_RINT(R) ((int)((R)>0?((R)+0.5):((R)-0.5)))
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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_malloc(3), im_open_local(3).
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.SH AUTHOR
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J. Cupitt \- 23/7/93
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