boostorg/preprocessor
1
0
Fork 1
mirror of https://github.com/boostorg/preprocessor.git synced 2025-07-23 17:17:12 +02:00
Code Issues Packages Projects Releases Wiki Activity

Doc fix

Browse Source 
[SVN r14108]
This commit is contained in:
Vesa Karvonen
2002-06-08 00:10:24 +00:00
parent 032860a124
commit f5a7b0be75
1 changed files with 17 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
example/repeat_2d.c
View File

@ -16,43 +16,39 @@
#include <boost/preprocessor/repeat.hpp>
/** Repeats the macro M(X,Y,P) for X = [0,W[ and Y = [0,H[.
/** <p>Repeats the macro <code>M(X,Y,DATA)</code> for <code>X = [0,W)</code> and <code>Y = [0,H)</code>.</p>
In other words, expands to the sequence:
<p>In other words, expands to the sequence:</p>
<PRE>\verbatim
M( 0, 0, P) M( 1, 0, P) ... M(W-1, 0, P)
M( 0, 1, P) M( 1, 1, P) ... M(W-1, 1, P)
... ... ... ...
M( 0,H-1, P) M( 1,H-1, P) ... M(W-1,H-1, P)
\endverbatim</PRE>
Uses BOOST_PP_REPEAT().
<pre>
M( 0, 0, DATA) M( 1, 0, DATA) ... M(W-1, 0, DATA)
M( 0, 1, DATA) M( 1, 1, DATA) ... M(W-1, 1, DATA)
... ... ... ...
M( 0,H-1, DATA) M( 1,H-1, DATA) ... M(W-1,H-1, DATA)
</pre>
*/
#define REPEAT_2D(W,H,M,P)\
#define REPEAT_2D(W,H,M,DATA)\
/* Here we can simply use BOOST_PP_REPEAT(), because\
* it implements automatic recursion.\
*/\
BOOST_PP_REPEAT\
( H\
, REPEAT_2D_ROW\
, (W,M,P)\
, (W,M,DATA)\
)
#ifndef DOXYGEN_SHOULD_SKIP_THIS
#define REPEAT_2D_ROW(Y,WMP)\
#define REPEAT_2D_ROW(Y,WMD)\
BOOST_PP_REPEAT\
( BOOST_PP_TUPLE_ELEM(3,0,WMP)\
( BOOST_PP_TUPLE_ELEM(3,0,WMD)\
, REPEAT_2D_ELEM\
, (Y, BOOST_PP_TUPLE_ELEM(3,1,WMP), BOOST_PP_TUPLE_ELEM(3,2,WMP))\
, (Y, BOOST_PP_TUPLE_ELEM(3,1,WMD), BOOST_PP_TUPLE_ELEM(3,2,WMD))\
)
#define REPEAT_2D_ELEM(X,YMP)\
BOOST_PP_TUPLE_ELEM(3,1,YMP)\
#define REPEAT_2D_ELEM(X,YMD)\
BOOST_PP_TUPLE_ELEM(3,1,YMD)\
( X\
, BOOST_PP_TUPLE_ELEM(3,0,YMP)\
, BOOST_PP_TUPLE_ELEM(3,2,YMP)\
, BOOST_PP_TUPLE_ELEM(3,0,YMD)\
, BOOST_PP_TUPLE_ELEM(3,2,YMD)\
)
#endif
#include <boost/preprocessor/logical/or.hpp>
#include <boost/preprocessor/comma_if.hpp>