atlas::bits Namespace Reference

Functions
unsigned int	bitCount (unsigned long x)
size_t	firstBit (unsigned long f)
size_t	lastBit (unsigned long f)

Function Documentation

unsigned atlas::bits::bitCount

(

unsigned long

x

)

Synopsis: returns the sum of the bits (i.e., the number of set bits) in x.

size_t atlas::bits::firstBit

(

unsigned long

f

)

Synopsis: returns the position of the first set bit in f.

Returns longBits if there is no such bit.

size_t atlas::bits::lastBit

(

unsigned long

f

)

Synopsis: returns the position of the last (most significant) set bit in f, PLUS ONE. Returns 0 if there is no such bit.