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21<snippet>
<content><![CDATA[
//note: lsb_set==lsb && lsb_unset==lsbu
//just take log2(lsb_set(x)) if want just pos. //x!=0
int log2_floor(long long i) {
return i ? __builtin_clzll(1ll) - __builtin_clzll(i) : -1;
}
#define lsb(x) (x&-x)
#define lsbu(x) (x&(x+1))
#define msb(x) __lg(x)
#define msbu(x)
]]></content>
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<tabTrigger>msb lsb bit</tabTrigger>
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<scope>source.c++</scope>
</snippet>