Function

CFBitVectorGetCountOfBit(_:_:_:)

Counts the number of times a certain bit value occurs within a range of bits in a bit vector.

Declaration

func CFBitVectorGetCountOfBit(_ bv: CFBitVector!, _ range: CFRange, _ value: CFBit) -> CFIndex

Parameters

bv

The bit vector to examine.

range

The range of bits in bv to search.

value

The bit value to count.

Return Value

The number of occurrences of value in the specified range of bv.

See Also

Getting Information About a Bit Vector

func CFBitVectorContainsBit(CFBitVector!, CFRange, CFBit) -> Bool

Returns whether a bit vector contains a particular bit value.

func CFBitVectorGetBitAtIndex(CFBitVector!, CFIndex) -> CFBit

Returns the bit value at a given index in a bit vector.

func CFBitVectorGetBits(CFBitVector!, CFRange, UnsafeMutablePointer<UInt8>!)

Returns the bit values in a range of indices in a bit vector.

func CFBitVectorGetCount(CFBitVector!) -> CFIndex

Returns the number of bit values in a bit vector.

func CFBitVectorGetFirstIndexOfBit(CFBitVector!, CFRange, CFBit) -> CFIndex

Locates the first occurrence of a certain bit value within a range of bits in a bit vector.

func CFBitVectorGetLastIndexOfBit(CFBitVector!, CFRange, CFBit) -> CFIndex

Locates the last occurrence of a certain bit value within a range of bits in a bit vector.