Igor R писал 2014-04-08 16:25:
Hello,
I'm trying to repeat a group of actual parameters (passed to some 3d
party plain-C "variadic" function).
The function call looks like this:
func(count,
param1, param2, arr1[0], arr2[0],
param1, param2, arr1[1], arr2[1],
param1, param2, arr1[2], arr2[2] /* etc */);
So essentially, I'd like to repeat (param1, param2, arr1[n], arr2[n])
group.
What is the right way to invoke BOOST_PP_REPEAT in this case?
Hi,
example:
#include
#include
#include
#define PP_PROC(unused1, idx, from) \
param1, param2, arr1[BOOST_PP_ADD(from, idx)], arr2[BOOST_PP_ADD(from,
idx)],
#define MY_REPEAT(from, to) \
BOOST_PP_REPEAT( \
BOOST_PP_SUB(to, from) \
,PP_PROC \
,from \
)
/* example */
MY_REPEAT(1, 3);
MY_REPEAT(9, 15);
output:
param1, param2, arr1[1], arr2[1],
param1, param2, arr1[2], arr2[2],;
param1, param2, arr1[9], arr2[9],
param1, param2, arr1[10], arr2[10],
param1, param2, arr1[11], arr2[11],
param1, param2, arr1[12], arr2[12],
param1, param2, arr1[13], arr2[13],
param1, param2, arr1[14], arr2[14],;
--
Regards, niXman
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