Collaboration diagram for Binary-distance metrics:

Enumerations
enum	bm::distance_metric { bm::COUNT_AND = set_COUNT_AND , bm::COUNT_XOR = set_COUNT_XOR , bm::COUNT_OR = set_COUNT_OR , bm::COUNT_SUB_AB = set_COUNT_SUB_AB , bm::COUNT_SUB_BA = set_COUNT_SUB_BA , bm::COUNT_A = set_COUNT_A , bm::COUNT_B = set_COUNT_B }
	Distance metrics codes defined for vectors A and B. More...

Functions
distance_metric	bm::operation2metric (set_operation op) BMNOEXCEPT
	Convert set operation into compatible distance metric. More...

template<class BV >
void	bm::distance_operation (const BV &bv1, const BV &bv2, distance_metric_descriptor dmit, distance_metric_descriptor dmit_end) BMNOEXCEPT
	Distance computing template function. More...

template<class BV >
BV::size_type	bm::distance_and_operation (const BV &bv1, const BV &bv2) BMNOEXCEPT
	Distance AND computing template function. More...

template<class BV >
void	bm::distance_operation_any (const BV &bv1, const BV &bv2, distance_metric_descriptor dmit, distance_metric_descriptor dmit_end) BMNOEXCEPT
	Distance screening template function. More...

Detailed Description

Distance metrics and algorithms to compute binary distances

Enumeration Type Documentation

◆ distance_metric

enum bm::distance_metric

Distance metrics codes defined for vectors A and B.

Enumerator
COUNT_AND	(A & B).count()
COUNT_XOR	(A ^ B).count()
COUNT_OR	(A \| B).count()
COUNT_SUB_AB	(A - B).count()
COUNT_SUB_BA	(B - A).count()
COUNT_A	A.count()
COUNT_B	B.count()

Definition at line 57 of file bmalgo_impl.h.

Function Documentation

◆ distance_and_operation()

template<class BV >

BV::size_type bm::distance_and_operation	(	const BV &	bv1,
		const BV &	bv2
	)

Distance AND computing template function.

Parameters

bv1	- argument bitvector 1 (A)
bv2	- argument bitvector 2 (B)

Definition at line 853 of file bmalgo_impl.h.

References BLOCK_ADDR_SAN, bm::combine_count_and_operation_with_block(), FULL_BLOCK_FAKE_ADDR, FULL_SUB_BLOCK_REAL_ADDR, bm::min_value(), and bm::set_sub_array_size.

Referenced by bm::count_and().

◆ distance_operation()

template<class BV >

void bm::distance_operation	(	const BV &	bv1,
		const BV &	bv2,
		distance_metric_descriptor *	dmit,
		distance_metric_descriptor *	dmit_end
	)

Distance computing template function.

Function receives two bitvectors and an array of distance metrics (metrics pipeline). Function computes all metrics saves result into corresponding pipeline results (distance_metric_descriptor::result) An important detail is that function reuses metric descriptors, incrementing received values. It allows you to accumulate results from different calls in the pipeline.

Parameters

bv1	- argument bitvector 1 (A)
bv2	- argument bitvector 2 (B)
dmit	- pointer to first element of metric descriptors array Input-Output parameter, receives metric code as input, computation is added to "result" field
dmit_end	- pointer to (last+1) element of metric descriptors array

Examples: sample9.cpp.

Definition at line 766 of file bmalgo_impl.h.

References bm::combine_count_operation_with_block(), bm::distance_stage(), and bm::set_sub_array_size.

Referenced by bm::similarity_batch< SDESCR >::calculate(), bm::count_or(), bm::count_sub(), bm::count_xor(), and main().

◆ distance_operation_any()

template<class BV >

void bm::distance_operation_any	(	const BV &	bv1,
		const BV &	bv2,
		distance_metric_descriptor *	dmit,
		distance_metric_descriptor *	dmit_end
	)

Distance screening template function.

Function receives two bitvectors and an array of distance metrics (metrics pipeline). Function computes possybility of a metric(any bit) saves result into corresponding pipeline results (distance_metric_descriptor::result) An important detail is that function reuses metric descriptors, incrementing received values. It allows you to accumulate results from different calls in the pipeline.

Parameters

bv1	- argument bitvector 1 (A)
bv2	- argument bitvector 2 (B)
dmit	- pointer to first element of metric descriptors array Input-Output parameter, receives metric code as input, computation is added to "result" field
dmit_end	- pointer to (last+1) element of metric descriptors array

Definition at line 922 of file bmalgo_impl.h.

References BM_IS_GAP, bm::combine_any_operation_with_block(), bm::distance_stage(), bm::distance_metric_descriptor::result, and bm::set_sub_array_size.

Referenced by bm::any_and(), bm::any_or(), bm::any_sub(), and bm::any_xor().