contrib/package/meshwizard/files/usr/bin/meshwizard/helpers/common.awk

   1 function bitcount(c) {
   2         c=and(rshift(c, 1),0x55555555)+and(c,0x55555555)
   3         c=and(rshift(c, 2),0x33333333)+and(c,0x33333333)
   4         c=and(rshift(c, 4),0x0f0f0f0f)+and(c,0x0f0f0f0f)
   5         c=and(rshift(c, 8),0x00ff00ff)+and(c,0x00ff00ff)
   6         c=and(rshift(c,16),0x0000ffff)+and(c,0x0000ffff)
   7         return c
   8 }
   9
  10 function ip2int(ip) {
  11         for (ret=0,n=split(ip,a,"\."),x=1;x<=n;x++) ret=or(lshift(ret,8),a[x])
  12         return ret
  13 }
  14
  15 function int2ip(ip,ret,x) {
  16         ret=and(ip,255)
  17         ip=rshift(ip,8)
  18         for(;x<3;ret=and(ip,255)"."ret,ip=rshift(ip,8),x++);
  19         return ret
  20 }