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## fast_pow10_division.md

      
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                shuax
                / fast_pow10_division.md
            
            
              Created
              August 31, 2023 02:31
                — forked from loicmolinari/fast_pow10_division.md
            
              
                Fast power-of-10 division using multiply and shift magic constants in a look-up table instead of a costly division operation.
              
          
    U64
DivPow10(U64 a, S64 index)
{
    ASSERT(index >= 0 && index < 19);

    // Generated using libdivide's reference implementation adapted to 64-bit unsigned integers.
    static const struct { U64 mul; U32 shr1; U32 shr2; } kPow10Magics[19] = {
        { 0xcccccccccccccccd,  0,  3 },  // 10^1
        { 0x28f5c28f5c28f5c3,  2,  2 },  // 10^2

  
## QQWayIPSeekerUpdate.py
import os
import re
import zlib
import urllib.request
from struct import unpack


class QQWayIPSeekerUpdate():
    @classmethod
    def __download_meta(cls):
	import os
	import re
	import zlib
	import urllib.request
	from struct import unpack


	class QQWayIPSeekerUpdate():
	@classmethod
	def __download_meta(cls):