Function align_size

dnn/src/arm_common/separable_conv/sep_conv_common.h:18–21

///////////  helper  ///////////

static inline size_t align_size(size_t sz, int n) {
    megdnn_assert((n & (n - 1)) == 0);
    return (sz + n - 1) & -n;
}

static inline int clip(int x, int a, int b) {
    return x >= a ? (x < b ? x : b - 1) : a;