diff options
Diffstat (limited to 'h/counters.h')
| -rw-r--r-- | h/counters.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/h/counters.h b/h/counters.h index e3944d9..0fbb11a 100644 --- a/h/counters.h +++ b/h/counters.h @@ -54,6 +54,17 @@ /* After init or increment, expression is TRUE if counter is done */ #define DC_DONE(nn) \ (nn##_e >= nn##_di) + +/* Typical use: + + DCOUNT(cc, 15, 3, -1, -1, 2); + + DC_INIT(cc); + while(!DC_DONE(cc)) { + + DC_INC(cc); + } + */ /* (Do we need a version of the above that tracks the actual input coords ?) */ /* ------------------------------------------------------- */ @@ -137,6 +148,9 @@ /* Declare the counter name nn, combinations out of total */ /* mxdi should be set to maximum combinations */ +/* e.g. if there are 8 objects, and we want all combinations */ +/* of 4 out of the 8, we would use: COMBO(nn, 4, 4, 8) */ + #define COMBO(nn, mxdi, comb, total) \ int nn[mxdi+2]; /* counter value */ \ int nn##_cmb = (comb); /* number of combinations */ \ |