dynamic array of uint16_t in C

dynamic_array.c

#define PAR_CALLOC(T, N) ((T*) calloc(N * sizeof(T), 1))
#define PAR_REALLOC(T, BUF, N) ((T*) realloc(BUF, sizeof(T) * N))
#define PAR_FREE(BUF) free(BUF)

typedef struct {
    uint16_t* values;
    size_t count;
    size_t capacity;
} par__uint16list;

static par__uint16list* par__uint16list_create()
{
    par__uint16list* list = PAR_CALLOC(par__uint16list, 1);
    list->count = 0;
    list->capacity = 32;
    list->values = PAR_CALLOC(uint16_t, list->capacity);
    return list;
}

static void par__uint16list_add3(par__uint16list* list,
    uint16_t a, uint16_t b, uint16_t c)
{
    if (list->count + 3 > list->capacity) {
        list->capacity *= 2;
        list->values = PAR_REALLOC(uint16_t, list->values, list->capacity);
    }
    list->values[list->count++] = a;
    list->values[list->count++] = b;
    list->values[list->count++] = c;
}

static void par__uint16list_free(par__uint16list* list)
{
    if (list) {
        PAR_FREE(list->values);
        PAR_FREE(list);
    }
}