/src/git/ewah/ewok_rlw.h

Source (jump to first uncovered line)
/**
 * Copyright 2013, GitHub, Inc
 * Copyright 2009-2013, Daniel Lemire, Cliff Moon,
 *  David McIntosh, Robert Becho, Google Inc. and Veronika Zenz
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __EWOK_RLW_H__
#define __EWOK_RLW_H__

#include "ewok.h"

#define RLW_RUNNING_BITS (sizeof(eword_t) * 4)
#define RLW_LITERAL_BITS (sizeof(eword_t) * 8 - 1 - RLW_RUNNING_BITS)

#define RLW_LARGEST_RUNNING_COUNT (((eword_t)1 << RLW_RUNNING_BITS) - 1)
#define RLW_LARGEST_LITERAL_COUNT (((eword_t)1 << RLW_LITERAL_BITS) - 1)

#define RLW_LARGEST_RUNNING_COUNT_SHIFT (RLW_LARGEST_RUNNING_COUNT << 1)

#define RLW_RUNNING_LEN_PLUS_BIT (((eword_t)1 << (RLW_RUNNING_BITS + 1)) - 1)

static inline int rlw_get_run_bit(const eword_t *word)
{
  return *word & (eword_t)1;
}

static inline void rlw_set_run_bit(eword_t *word, int b)
{
  if (b) {
    *word |= (eword_t)1;
  } else {
    *word &= (eword_t)(~1);
  }
}

static inline void rlw_xor_run_bit(eword_t *word)
{
  if (*word & 1) {
    *word &= (eword_t)(~1);
  } else {
    *word |= (eword_t)1;
  }
}

static inline void rlw_set_running_len(eword_t *word, eword_t l)
{
  *word |= RLW_LARGEST_RUNNING_COUNT_SHIFT;
  *word &= (l << 1) | (~RLW_LARGEST_RUNNING_COUNT_SHIFT);
}

static inline eword_t rlw_get_running_len(const eword_t *word)
{
  return (*word >> 1) & RLW_LARGEST_RUNNING_COUNT;
}

static inline eword_t rlw_get_literal_words(const eword_t *word)
{
  return *word >> (1 + RLW_RUNNING_BITS);
}

static inline void rlw_set_literal_words(eword_t *word, eword_t l)
{
  *word |= ~RLW_RUNNING_LEN_PLUS_BIT;
  *word &= (l << (RLW_RUNNING_BITS + 1)) | RLW_RUNNING_LEN_PLUS_BIT;
}

static inline eword_t rlw_size(const eword_t *self)
{
  return rlw_get_running_len(self) + rlw_get_literal_words(self);
}

struct rlw_iterator {
  const eword_t *buffer;
  size_t size;
  size_t pointer;
  size_t literal_word_start;

  struct {
    const eword_t *word;
    int literal_words;
    int running_len;
    int literal_word_offset;
    int running_bit;
  } rlw;
};

void rlwit_init(struct rlw_iterator *it, struct ewah_bitmap *bitmap);
void rlwit_discard_first_words(struct rlw_iterator *it, size_t x);
size_t rlwit_discharge(
  struct rlw_iterator *it, struct ewah_bitmap *out, size_t max, int negate);

static inline size_t rlwit_word_size(struct rlw_iterator *it)
{
  return it->rlw.running_len + it->rlw.literal_words;
}

static inline size_t rlwit_literal_words(struct rlw_iterator *it)
{
  return it->pointer - it->rlw.literal_words;
}

#endif

Line	Count	Source (jump to first uncovered line)
1		/**
2		* Copyright 2013, GitHub, Inc
3		* Copyright 2009-2013, Daniel Lemire, Cliff Moon,
4		* David McIntosh, Robert Becho, Google Inc. and Veronika Zenz
5		*
6		* This program is free software; you can redistribute it and/or
7		* modify it under the terms of the GNU General Public License
8		* as published by the Free Software Foundation; either version 2
9		* of the License, or (at your option) any later version.
10		*
11		* This program is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14		* GNU General Public License for more details.
15		*
16		* You should have received a copy of the GNU General Public License
17		* along with this program; if not, see <http://www.gnu.org/licenses/>.
18		*/
19		#ifndef __EWOK_RLW_H__
20		#define __EWOK_RLW_H__
21
22		#include "ewok.h"
23
24	0	#define RLW_RUNNING_BITS (sizeof(eword_t) * 4)
25	0	#define RLW_LITERAL_BITS (sizeof(eword_t) * 8 - 1 - RLW_RUNNING_BITS)
26
27	0	#define RLW_LARGEST_RUNNING_COUNT (((eword_t)1 << RLW_RUNNING_BITS) - 1)
28	0	#define RLW_LARGEST_LITERAL_COUNT (((eword_t)1 << RLW_LITERAL_BITS) - 1)
29
30	0	#define RLW_LARGEST_RUNNING_COUNT_SHIFT (RLW_LARGEST_RUNNING_COUNT << 1)
31
32	0	#define RLW_RUNNING_LEN_PLUS_BIT (((eword_t)1 << (RLW_RUNNING_BITS + 1)) - 1)
33
34		static inline int rlw_get_run_bit(const eword_t *word)
35	0	{
36	0	return *word & (eword_t)1;
37	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_get_run_bit Unexecuted instantiation: ewah_rlw.c:rlw_get_run_bit
38
39		static inline void rlw_set_run_bit(eword_t *word, int b)
40	0	{
41	0	if (b) {
42	0	*word \|= (eword_t)1;
43	0	} else {
44	0	*word &= (eword_t)(~1);
45	0	}
46	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_set_run_bit Unexecuted instantiation: ewah_rlw.c:rlw_set_run_bit
47
48		static inline void rlw_xor_run_bit(eword_t *word)
49	0	{
50	0	if (*word & 1) {
51	0	*word &= (eword_t)(~1);
52	0	} else {
53	0	*word \|= (eword_t)1;
54	0	}
55	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_xor_run_bit Unexecuted instantiation: ewah_rlw.c:rlw_xor_run_bit
56
57		static inline void rlw_set_running_len(eword_t *word, eword_t l)
58	0	{
59	0	*word \|= RLW_LARGEST_RUNNING_COUNT_SHIFT;
60	0	*word &= (l << 1) \| (~RLW_LARGEST_RUNNING_COUNT_SHIFT);
61	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_set_running_len Unexecuted instantiation: ewah_rlw.c:rlw_set_running_len
62
63		static inline eword_t rlw_get_running_len(const eword_t *word)
64	0	{
65	0	return (*word >> 1) & RLW_LARGEST_RUNNING_COUNT;
66	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_get_running_len Unexecuted instantiation: ewah_rlw.c:rlw_get_running_len
67
68		static inline eword_t rlw_get_literal_words(const eword_t *word)
69	0	{
70	0	return *word >> (1 + RLW_RUNNING_BITS);
71	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_get_literal_words Unexecuted instantiation: ewah_rlw.c:rlw_get_literal_words
72
73		static inline void rlw_set_literal_words(eword_t *word, eword_t l)
74	0	{
75	0	*word \|= ~RLW_RUNNING_LEN_PLUS_BIT;
76	0	*word &= (l << (RLW_RUNNING_BITS + 1)) \| RLW_RUNNING_LEN_PLUS_BIT;
77	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_set_literal_words Unexecuted instantiation: ewah_rlw.c:rlw_set_literal_words
78
79		static inline eword_t rlw_size(const eword_t *self)
80	0	{
81	0	return rlw_get_running_len(self) + rlw_get_literal_words(self);
82	0	} Unexecuted instantiation: ewah_bitmap.c:rlw_size Unexecuted instantiation: ewah_rlw.c:rlw_size
83
84		struct rlw_iterator {
85		const eword_t *buffer;
86		size_t size;
87		size_t pointer;
88		size_t literal_word_start;
89
90		struct {
91		const eword_t *word;
92		int literal_words;
93		int running_len;
94		int literal_word_offset;
95		int running_bit;
96		} rlw;
97		};
98
99		void rlwit_init(struct rlw_iterator it, struct ewah_bitmap bitmap);
100		void rlwit_discard_first_words(struct rlw_iterator *it, size_t x);
101		size_t rlwit_discharge(
102		struct rlw_iterator it, struct ewah_bitmap out, size_t max, int negate);
103
104		static inline size_t rlwit_word_size(struct rlw_iterator *it)
105	0	{
106	0	return it->rlw.running_len + it->rlw.literal_words;
107	0	} Unexecuted instantiation: ewah_bitmap.c:rlwit_word_size Unexecuted instantiation: ewah_rlw.c:rlwit_word_size
108
109		static inline size_t rlwit_literal_words(struct rlw_iterator *it)
110	0	{
111	0	return it->pointer - it->rlw.literal_words;
112	0	} Unexecuted instantiation: ewah_bitmap.c:rlwit_literal_words Unexecuted instantiation: ewah_rlw.c:rlwit_literal_words
113
114		#endif

Coverage Report

Created: 2024-09-16 06:10