mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-21 02:55:31 +02:00
9c95941f5d
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18109 3c298f89-4303-0410-b956-a3cf2f4a3e73
27 lines
622 B
Awk
27 lines
622 B
Awk
# Copyright (C) 2006 OpenWrt.org
|
|
|
|
function bitcount(c) {
|
|
c=and(rshift(c, 1),0x55555555)+and(c,0x55555555)
|
|
c=and(rshift(c, 2),0x33333333)+and(c,0x33333333)
|
|
c=and(rshift(c, 4),0x0f0f0f0f)+and(c,0x0f0f0f0f)
|
|
c=and(rshift(c, 8),0x00ff00ff)+and(c,0x00ff00ff)
|
|
c=and(rshift(c,16),0x0000ffff)+and(c,0x0000ffff)
|
|
return c
|
|
}
|
|
|
|
function validate_netmask(nm) {
|
|
return and(-nm,compl(nm))
|
|
}
|
|
|
|
function ip2int(ip) {
|
|
for (ret=0,n=split(ip,a,"\."),x=1;x<=n;x++) ret=or(lshift(ret,8),a[x])
|
|
return ret
|
|
}
|
|
|
|
function int2ip(ip,ret,x) {
|
|
ret=and(ip,255)
|
|
ip=rshift(ip,8)
|
|
for(;x<3;ret=and(ip,255)"."ret,ip=rshift(ip,8),x++);
|
|
return ret
|
|
}
|