diff options
Diffstat (limited to 'puzzles.h')
| -rw-r--r-- | puzzles.h | 14 |
1 files changed, 14 insertions, 0 deletions
@@ -591,6 +591,20 @@ bool findloop_run(struct findloopstate *state, int nvertices, bool findloop_is_loop_edge(struct findloopstate *state, int u, int v); /* + * Helper function to sort an array. Differs from standard qsort in + * that it takes a context parameter that is passed to the compare + * function. + * + * I wrap it in a macro so that you only need to give the element + * count of the array. The element size is determined by sizeof. + */ +typedef int (*arraysort_cmpfn_t)(const void *av, const void *bv, void *ctx); +void arraysort_fn(void *array, size_t nmemb, size_t size, + arraysort_cmpfn_t cmp, void *ctx); +#define arraysort(array, nmemb, cmp, ctx) \ + arraysort_fn(array, nmemb, sizeof(*(array)), cmp, ctx) + +/* * Data structure containing the function calls and data specific * to a particular game. This is enclosed in a data structure so * that a particular platform can choose, if it wishes, to compile |