16 vstack_t *vstack_new(void)
18 vstack_t *stack = (vstack_t *)malloc(sizeof(vstack_t));
26 void vstack_destroy(vstack_t *stack)
33 void vstack_push(vstack_t *stack, cmph_uint32 val)
36 vstack_reserve(stack, stack->pointer + 1);
37 stack->values[stack->pointer] = val;
40 void vstack_pop(vstack_t *stack)
43 assert(stack->pointer > 0);
47 cmph_uint32 vstack_top(vstack_t *stack)
50 assert(stack->pointer > 0);
51 return stack->values[(stack->pointer - 1)];
53 int vstack_empty(vstack_t *stack)
56 return stack->pointer == 0;
58 cmph_uint32 vstack_size(vstack_t *stack)
60 return stack->pointer;
62 void vstack_reserve(vstack_t *stack, cmph_uint32 size)
65 if (stack->capacity < size)
67 cmph_uint32 new_capacity = stack->capacity + 1;
68 DEBUGP("Increasing current capacity %u to %u\n", stack->capacity, size);
69 while (new_capacity < size)
73 stack->values = (cmph_uint32 *)realloc(stack->values, sizeof(cmph_uint32)*new_capacity);
74 assert(stack->values);
75 stack->capacity = new_capacity;
76 DEBUGP("Increased\n");