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make calc_dip faster

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Pavel Patsey
2025-01-24 12:13:55 +03:00
parent 68327db96c
commit 6c43344893
1 changed files with 8 additions and 10 deletions
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vpn_manager/cidr4_merge/cidr4_merger.py
+8 -10
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@@ -27,16 +27,14 @@ def find_parent(a: Node, b: Node) -> Node:
def calc_dip(mask_len_a: int, mask_len_b: int, mask_len_p: int) -> int: def calc_dip(mask_len_a: int, mask_len_b: int, mask_len_p: int) -> int:
mask_len = mask_len_p + 1 def dip(mla, mlp):
dip_a = 0 m = mlp + 1
while mask_len_a > mask_len: res = 1 << (mla - m)
dip_a += 2 ** (32 - mask_len_a) res -= 1
mask_len_a -= 1 res <<= 32 - mla
dip_b = 0 return res
while mask_len_b > mask_len:
dip_b += 2 ** (32 - mask_len_b) return dip(mask_len_a, mask_len_p) + dip(mask_len_b, mask_len_p)
mask_len_b -= 1
return dip_a + dip_b
def merge_two_nodes(node_a: Node, node_b: Node) -> tuple[Node, int]: def merge_two_nodes(node_a: Node, node_b: Node) -> tuple[Node, int]: