/var/local/thirdparty/installed/include/roaring/array_util.h

Source (jump to first uncovered line)
#ifndef ARRAY_UTIL_H
#define ARRAY_UTIL_H

#include <stddef.h>  // for size_t
#include <stdint.h>

#include <roaring/portability.h>

#if CROARING_IS_X64
#ifndef CROARING_COMPILER_SUPPORTS_AVX512
#error "CROARING_COMPILER_SUPPORTS_AVX512 needs to be defined."
#endif // CROARING_COMPILER_SUPPORTS_AVX512
#endif

#ifdef __cplusplus
extern "C" { namespace roaring { namespace internal {
#endif

/*
 *  Good old binary search.
 *  Assumes that array is sorted, has logarithmic complexity.
 *  if the result is x, then:
 *     if ( x>0 )  you have array[x] = ikey
 *     if ( x<0 ) then inserting ikey at position -x-1 in array (insuring that array[-x-1]=ikey)
 *                   keys the array sorted.
 */
inline int32_t binarySearch(const uint16_t *array, int32_t lenarray,
                            uint16_t ikey) {
    int32_t low = 0;
    int32_t high = lenarray - 1;
    while (low <= high) {
        int32_t middleIndex = (low + high) >> 1;
        uint16_t middleValue = array[middleIndex];
        if (middleValue < ikey) {
            low = middleIndex + 1;
        } else if (middleValue > ikey) {
            high = middleIndex - 1;
        } else {
            return middleIndex;
        }
    }
    return -(low + 1);
}

/**
 * Galloping search
 * Assumes that array is sorted, has logarithmic complexity.
 * if the result is x, then if x = length, you have that all values in array between pos and length
 *    are smaller than min.
 * otherwise returns the first index x such that array[x] >= min.
 */
static inline int32_t advanceUntil(const uint16_t *array, int32_t pos,
                                   int32_t length, uint16_t min) {
    int32_t lower = pos + 1;

    if ((lower >= length) || (array[lower] >= min)) {
        return lower;
    }

    int32_t spansize = 1;

    while ((lower + spansize < length) && (array[lower + spansize] < min)) {
        spansize <<= 1;
    }
    int32_t upper = (lower + spansize < length) ? lower + spansize : length - 1;

    if (array[upper] == min) {
        return upper;
    }
    if (array[upper] < min) {
        // means
        // array
        // has no
        // item
        // >= min
        // pos = array.length;
        return length;
    }

    // we know that the next-smallest span was too small
    lower += (spansize >> 1);

    int32_t mid = 0;
    while (lower + 1 != upper) {
        mid = (lower + upper) >> 1;
        if (array[mid] == min) {
            return mid;
        } else if (array[mid] < min) {
            lower = mid;
        } else {
            upper = mid;
        }
    }
    return upper;
}

/**
 * Returns number of elements which are less than ikey.
 * Array elements must be unique and sorted.
 */
static inline int32_t count_less(const uint16_t *array, int32_t lenarray,
                                 uint16_t ikey) {
    if (lenarray == 0) return 0;
    int32_t pos = binarySearch(array, lenarray, ikey);
    return pos >= 0 ? pos : -(pos+1);
}

/**
 * Returns number of elements which are greater than ikey.
 * Array elements must be unique and sorted.
 */
static inline int32_t count_greater(const uint16_t *array, int32_t lenarray,
                                    uint16_t ikey) {
    if (lenarray == 0) return 0;
    int32_t pos = binarySearch(array, lenarray, ikey);
    if (pos >= 0) {
        return lenarray - (pos+1);
    } else {
        return lenarray - (-pos-1);
    }
}

/**
 * From Schlegel et al., Fast Sorted-Set Intersection using SIMD Instructions
 * Optimized by D. Lemire on May 3rd 2013
 *
 * C should have capacity greater than the minimum of s_1 and s_b + 8
 * where 8 is sizeof(__m128i)/sizeof(uint16_t).
 */
int32_t intersect_vector16(const uint16_t *__restrict__ A, size_t s_a,
                           const uint16_t *__restrict__ B, size_t s_b,
                           uint16_t *C);

int32_t intersect_vector16_inplace(uint16_t *__restrict__ A, size_t s_a,
                           const uint16_t *__restrict__ B, size_t s_b);

/**
 * Take an array container and write it out to a 32-bit array, using base
 * as the offset.
 */
int array_container_to_uint32_array_vector16(void *vout, const uint16_t* array, size_t cardinality,
                                    uint32_t base);
#if CROARING_COMPILER_SUPPORTS_AVX512
int avx512_array_container_to_uint32_array(void *vout, const uint16_t* array, size_t cardinality,
                                    uint32_t base);
#endif
/**
 * Compute the cardinality of the intersection using SSE4 instructions
 */
int32_t intersect_vector16_cardinality(const uint16_t *__restrict__ A,
                                       size_t s_a,
                                       const uint16_t *__restrict__ B,
                                       size_t s_b);

/* Computes the intersection between one small and one large set of uint16_t.
 * Stores the result into buffer and return the number of elements. */
int32_t intersect_skewed_uint16(const uint16_t *smallarray, size_t size_s,
                                const uint16_t *largearray, size_t size_l,
                                uint16_t *buffer);

/* Computes the size of the intersection between one small and one large set of
 * uint16_t. */
int32_t intersect_skewed_uint16_cardinality(const uint16_t *smallarray,
                                            size_t size_s,
                                            const uint16_t *largearray,
                                            size_t size_l);


/* Check whether the size of the intersection between one small and one large set of uint16_t is non-zero. */
bool intersect_skewed_uint16_nonempty(const uint16_t *smallarray, size_t size_s,
                                const uint16_t *largearray, size_t size_l);
/**
 * Generic intersection function.
 */
int32_t intersect_uint16(const uint16_t *A, const size_t lenA,
                         const uint16_t *B, const size_t lenB, uint16_t *out);
/**
 * Compute the size of the intersection (generic).
 */
int32_t intersect_uint16_cardinality(const uint16_t *A, const size_t lenA,
                                     const uint16_t *B, const size_t lenB);

/**
 * Checking whether the size of the intersection  is non-zero.
 */
bool intersect_uint16_nonempty(const uint16_t *A, const size_t lenA,
                         const uint16_t *B, const size_t lenB);
/**
 * Generic union function.
 */
size_t union_uint16(const uint16_t *set_1, size_t size_1, const uint16_t *set_2,
                    size_t size_2, uint16_t *buffer);

/**
 * Generic XOR function.
 */
int32_t xor_uint16(const uint16_t *array_1, int32_t card_1,
                   const uint16_t *array_2, int32_t card_2, uint16_t *out);

/**
 * Generic difference function (ANDNOT).
 */
int difference_uint16(const uint16_t *a1, int length1, const uint16_t *a2,
                      int length2, uint16_t *a_out);

/**
 * Generic intersection function.
 */
size_t intersection_uint32(const uint32_t *A, const size_t lenA,
                           const uint32_t *B, const size_t lenB, uint32_t *out);

/**
 * Generic intersection function, returns just the cardinality.
 */
size_t intersection_uint32_card(const uint32_t *A, const size_t lenA,
                                const uint32_t *B, const size_t lenB);

/**
 * Generic union function.
 */
size_t union_uint32(const uint32_t *set_1, size_t size_1, const uint32_t *set_2,
                    size_t size_2, uint32_t *buffer);

/**
 * A fast SSE-based union function.
 */
uint32_t union_vector16(const uint16_t *__restrict__ set_1, uint32_t size_1,
                        const uint16_t *__restrict__ set_2, uint32_t size_2,
                        uint16_t *__restrict__ buffer);
/**
 * A fast SSE-based XOR function.
 */
uint32_t xor_vector16(const uint16_t *__restrict__ array1, uint32_t length1,
                      const uint16_t *__restrict__ array2, uint32_t length2,
                      uint16_t *__restrict__ output);

/**
 * A fast SSE-based difference function.
 */
int32_t difference_vector16(const uint16_t *__restrict__ A, size_t s_a,
                            const uint16_t *__restrict__ B, size_t s_b,
                            uint16_t *C);

/**
 * Generic union function, returns just the cardinality.
 */
size_t union_uint32_card(const uint32_t *set_1, size_t size_1,
                         const uint32_t *set_2, size_t size_2);

/**
* combines union_uint16 and  union_vector16 optimally
*/
size_t fast_union_uint16(const uint16_t *set_1, size_t size_1, const uint16_t *set_2,
                    size_t size_2, uint16_t *buffer);


bool memequals(const void *s1, const void *s2, size_t n);

#ifdef __cplusplus
} } }  // extern "C" { namespace roaring { namespace internal {
#endif

#endif

Coverage Report

Created: 2024-11-21 23:52

Line	Count	Source (jump to first uncovered line)
1		#ifndef ARRAY_UTIL_H
2		#define ARRAY_UTIL_H
3
4		#include <stddef.h> // for size_t
5		#include <stdint.h>
6
7		#include <roaring/portability.h>
8
9		#if CROARING_IS_X64
10		#ifndef CROARING_COMPILER_SUPPORTS_AVX512
11		#error "CROARING_COMPILER_SUPPORTS_AVX512 needs to be defined."
12		#endif // CROARING_COMPILER_SUPPORTS_AVX512
13		#endif
14
15		#ifdef __cplusplus
16		extern "C" { namespace roaring { namespace internal {
17		#endif
18
19		/*
20		* Good old binary search.
21		* Assumes that array is sorted, has logarithmic complexity.
22		* if the result is x, then:
23		* if ( x>0 ) you have array[x] = ikey
24		* if ( x<0 ) then inserting ikey at position -x-1 in array (insuring that array[-x-1]=ikey)
25		* keys the array sorted.
26		*/
27		inline int32_t binarySearch(const uint16_t *array, int32_t lenarray,
28	0	uint16_t ikey) {
29	0	int32_t low = 0;
30	0	int32_t high = lenarray - 1;
31	0	while (low <= high) {
32	0	int32_t middleIndex = (low + high) >> 1;
33	0	uint16_t middleValue = array[middleIndex];
34	0	if (middleValue < ikey) {
35	0	low = middleIndex + 1;
36	0	} else if (middleValue > ikey) {
37	0	high = middleIndex - 1;
38	0	} else {
39	0	return middleIndex;
40	0	}
41	0	}
42	0	return -(low + 1);
43	0	}
44
45		/**
46		* Galloping search
47		* Assumes that array is sorted, has logarithmic complexity.
48		* if the result is x, then if x = length, you have that all values in array between pos and length
49		* are smaller than min.
50		* otherwise returns the first index x such that array[x] >= min.
51		*/
52		static inline int32_t advanceUntil(const uint16_t *array, int32_t pos,
53	0	int32_t length, uint16_t min) {
54	0	int32_t lower = pos + 1;
55	0
56	0	if ((lower >= length) \|\| (array[lower] >= min)) {
57	0	return lower;
58	0	}
59	0
60	0	int32_t spansize = 1;
61	0
62	0	while ((lower + spansize < length) && (array[lower + spansize] < min)) {
63	0	spansize <<= 1;
64	0	}
65	0	int32_t upper = (lower + spansize < length) ? lower + spansize : length - 1;
66	0
67	0	if (array[upper] == min) {
68	0	return upper;
69	0	}
70	0	if (array[upper] < min) {
71	0	// means
72	0	// array
73	0	// has no
74	0	// item
75	0	// >= min
76	0	// pos = array.length;
77	0	return length;
78	0	}
79	0
80	0	// we know that the next-smallest span was too small
81	0	lower += (spansize >> 1);
82	0
83	0	int32_t mid = 0;
84	0	while (lower + 1 != upper) {
85	0	mid = (lower + upper) >> 1;
86	0	if (array[mid] == min) {
87	0	return mid;
88	0	} else if (array[mid] < min) {
89	0	lower = mid;
90	0	} else {
91	0	upper = mid;
92	0	}
93	0	}
94	0	return upper;
95	0	} Unexecuted instantiation: bkd_writer.cpp:_ZN7roaring8internalL12advanceUntilEPKtiit Unexecuted instantiation: bkd_reader.cpp:_ZN7roaring8internalL12advanceUntilEPKtiit Unexecuted instantiation: packed_index_tree.cpp:_ZN7roaring8internalL12advanceUntilEPKtiit Unexecuted instantiation: index_tree.cpp:_ZN7roaring8internalL12advanceUntilEPKtiit Unexecuted instantiation: legacy_index_tree.cpp:_ZN7roaring8internalL12advanceUntilEPKtiit Unexecuted instantiation: docids_writer.cpp:_ZN7roaring8internalL12advanceUntilEPKtiit Unexecuted instantiation: IndexWriter.cpp:_ZN7roaring8internalL12advanceUntilEPKtiit
96
97		/**
98		* Returns number of elements which are less than ikey.
99		* Array elements must be unique and sorted.
100		*/
101		static inline int32_t count_less(const uint16_t *array, int32_t lenarray,
102	0	uint16_t ikey) {
103	0	if (lenarray == 0) return 0;
104	0	int32_t pos = binarySearch(array, lenarray, ikey);
105	0	return pos >= 0 ? pos : -(pos+1);
106	0	} Unexecuted instantiation: bkd_writer.cpp:_ZN7roaring8internalL10count_lessEPKtit Unexecuted instantiation: bkd_reader.cpp:_ZN7roaring8internalL10count_lessEPKtit Unexecuted instantiation: packed_index_tree.cpp:_ZN7roaring8internalL10count_lessEPKtit Unexecuted instantiation: index_tree.cpp:_ZN7roaring8internalL10count_lessEPKtit Unexecuted instantiation: legacy_index_tree.cpp:_ZN7roaring8internalL10count_lessEPKtit Unexecuted instantiation: docids_writer.cpp:_ZN7roaring8internalL10count_lessEPKtit Unexecuted instantiation: IndexWriter.cpp:_ZN7roaring8internalL10count_lessEPKtit
107
108		/**
109		* Returns number of elements which are greater than ikey.
110		* Array elements must be unique and sorted.
111		*/
112		static inline int32_t count_greater(const uint16_t *array, int32_t lenarray,
113	0	uint16_t ikey) {
114	0	if (lenarray == 0) return 0;
115	0	int32_t pos = binarySearch(array, lenarray, ikey);
116	0	if (pos >= 0) {
117	0	return lenarray - (pos+1);
118	0	} else {
119	0	return lenarray - (-pos-1);
120	0	}
121	0	} Unexecuted instantiation: bkd_writer.cpp:_ZN7roaring8internalL13count_greaterEPKtit Unexecuted instantiation: bkd_reader.cpp:_ZN7roaring8internalL13count_greaterEPKtit Unexecuted instantiation: packed_index_tree.cpp:_ZN7roaring8internalL13count_greaterEPKtit Unexecuted instantiation: index_tree.cpp:_ZN7roaring8internalL13count_greaterEPKtit Unexecuted instantiation: legacy_index_tree.cpp:_ZN7roaring8internalL13count_greaterEPKtit Unexecuted instantiation: docids_writer.cpp:_ZN7roaring8internalL13count_greaterEPKtit Unexecuted instantiation: IndexWriter.cpp:_ZN7roaring8internalL13count_greaterEPKtit
122
123		/**
124		* From Schlegel et al., Fast Sorted-Set Intersection using SIMD Instructions
125		* Optimized by D. Lemire on May 3rd 2013
126		*
127		* C should have capacity greater than the minimum of s_1 and s_b + 8
128		* where 8 is sizeof(__m128i)/sizeof(uint16_t).
129		*/
130		int32_t intersect_vector16(const uint16_t *__restrict__ A, size_t s_a,
131		const uint16_t *__restrict__ B, size_t s_b,
132		uint16_t *C);
133
134		int32_t intersect_vector16_inplace(uint16_t *__restrict__ A, size_t s_a,
135		const uint16_t *__restrict__ B, size_t s_b);
136
137		/**
138		* Take an array container and write it out to a 32-bit array, using base
139		* as the offset.
140		*/
141		int array_container_to_uint32_array_vector16(void vout, const uint16_t array, size_t cardinality,
142		uint32_t base);
143		#if CROARING_COMPILER_SUPPORTS_AVX512
144		int avx512_array_container_to_uint32_array(void vout, const uint16_t array, size_t cardinality,
145		uint32_t base);
146		#endif
147		/**
148		* Compute the cardinality of the intersection using SSE4 instructions
149		*/
150		int32_t intersect_vector16_cardinality(const uint16_t *__restrict__ A,
151		size_t s_a,
152		const uint16_t *__restrict__ B,
153		size_t s_b);
154
155		/* Computes the intersection between one small and one large set of uint16_t.
156		* Stores the result into buffer and return the number of elements. */
157		int32_t intersect_skewed_uint16(const uint16_t *smallarray, size_t size_s,
158		const uint16_t *largearray, size_t size_l,
159		uint16_t *buffer);
160
161		/* Computes the size of the intersection between one small and one large set of
162		* uint16_t. */
163		int32_t intersect_skewed_uint16_cardinality(const uint16_t *smallarray,
164		size_t size_s,
165		const uint16_t *largearray,
166		size_t size_l);
167
168
169		/* Check whether the size of the intersection between one small and one large set of uint16_t is non-zero. */
170		bool intersect_skewed_uint16_nonempty(const uint16_t *smallarray, size_t size_s,
171		const uint16_t *largearray, size_t size_l);
172		/**
173		* Generic intersection function.
174		*/
175		int32_t intersect_uint16(const uint16_t *A, const size_t lenA,
176		const uint16_t B, const size_t lenB, uint16_t out);
177		/**
178		* Compute the size of the intersection (generic).
179		*/
180		int32_t intersect_uint16_cardinality(const uint16_t *A, const size_t lenA,
181		const uint16_t *B, const size_t lenB);
182
183		/**
184		* Checking whether the size of the intersection is non-zero.
185		*/
186		bool intersect_uint16_nonempty(const uint16_t *A, const size_t lenA,
187		const uint16_t *B, const size_t lenB);
188		/**
189		* Generic union function.
190		*/
191		size_t union_uint16(const uint16_t set_1, size_t size_1, const uint16_t set_2,
192		size_t size_2, uint16_t *buffer);
193
194		/**
195		* Generic XOR function.
196		*/
197		int32_t xor_uint16(const uint16_t *array_1, int32_t card_1,
198		const uint16_t array_2, int32_t card_2, uint16_t out);
199
200		/**
201		* Generic difference function (ANDNOT).
202		*/
203		int difference_uint16(const uint16_t a1, int length1, const uint16_t a2,
204		int length2, uint16_t *a_out);
205
206		/**
207		* Generic intersection function.
208		*/
209		size_t intersection_uint32(const uint32_t *A, const size_t lenA,
210		const uint32_t B, const size_t lenB, uint32_t out);
211
212		/**
213		* Generic intersection function, returns just the cardinality.
214		*/
215		size_t intersection_uint32_card(const uint32_t *A, const size_t lenA,
216		const uint32_t *B, const size_t lenB);
217
218		/**
219		* Generic union function.
220		*/
221		size_t union_uint32(const uint32_t set_1, size_t size_1, const uint32_t set_2,
222		size_t size_2, uint32_t *buffer);
223
224		/**
225		* A fast SSE-based union function.
226		*/
227		uint32_t union_vector16(const uint16_t *__restrict__ set_1, uint32_t size_1,
228		const uint16_t *__restrict__ set_2, uint32_t size_2,
229		uint16_t *__restrict__ buffer);
230		/**
231		* A fast SSE-based XOR function.
232		*/
233		uint32_t xor_vector16(const uint16_t *__restrict__ array1, uint32_t length1,
234		const uint16_t *__restrict__ array2, uint32_t length2,
235		uint16_t *__restrict__ output);
236
237		/**
238		* A fast SSE-based difference function.
239		*/
240		int32_t difference_vector16(const uint16_t *__restrict__ A, size_t s_a,
241		const uint16_t *__restrict__ B, size_t s_b,
242		uint16_t *C);
243
244		/**
245		* Generic union function, returns just the cardinality.
246		*/
247		size_t union_uint32_card(const uint32_t *set_1, size_t size_1,
248		const uint32_t *set_2, size_t size_2);
249
250		/**
251		* combines union_uint16 and union_vector16 optimally
252		*/
253		size_t fast_union_uint16(const uint16_t set_1, size_t size_1, const uint16_t set_2,
254		size_t size_2, uint16_t *buffer);
255
256
257		bool memequals(const void s1, const void s2, size_t n);
258
259		#ifdef __cplusplus
260		} } } // extern "C" { namespace roaring { namespace internal {
261		#endif
262
263		#endif