#define P99_REPEAT (   MACRO,
)    P99_FOR(MACRO, N, P00_SEQ, P00_REPEAT, P99_DUPL(N,))

Apply the macro MACRO N times.

The macro is called with the numbers 0, ..., N-1 and the N results are separated by a comma.

In the following example we define an adhoc macro that initializes an array element with a certain structure type. The array P is an array of 10 pairs, each containing their index in the index field and a different pointer in their aPos field.

typedef struct pair pair;
struct pair {
size_t index;
double* aPos;
#define ASIZE 10
double A[] = { P99_DUPL(ASIZE, 1.7) };
#define INIT_PAIR(I) [I] = { \
.index = I, \
.aPos = &A[I], \
pair P[] = { P99_REPEAT(INIT_PAIR, ASIZE) };
See also
P99_UNROLL for a macro that separates the parts by ;
P99_SEQ for a similar macro that applies MACRO to a list of items
P99_FOR for a more Generic type expressions and Flexible array members utility
argument 0 should correspond to a macro name
argument 1 must expand to a decimal number

Definition at line 189 of file p99_for.h.

#define P99_DUPL(...)
Construct a list that repeats the argument list N times.
Definition: p99_list.h:90