Branch data Line data Source code
1 : : #ifndef _CMPH_BITBOOL_H__
2 : : #define _CMPH_BITBOOL_H__
3 : : #include "cmph_types.h"
4 : :
5 : : static const cmph_uint8 bitmask[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7 };
6 : :
7 : : static const cmph_uint32 bitmask32[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7,
8 : : 1 << 8, 1 << 9, 1 << 10, 1 << 11, 1 << 12, 1 << 13, 1 << 14, 1 << 15,
9 : : 1 << 16, 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 21, 1 << 22, 1 << 23,
10 : : 1 << 24, 1 << 25, 1 << 26, 1 << 27, 1 << 28, 1 << 29, 1 << 30, 1U << 31
11 : : };
12 : :
13 : : static const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f};
14 : :
15 : :
16 : : /** \def GETBIT(array, i)
17 : : * \brief get the value of a 1-bit integer stored in an array.
18 : : * \param array to get 1-bit integer values from
19 : : * \param i is the index in array to get the 1-bit integer value from
20 : : *
21 : : * GETBIT(array, i) is a macro that gets the value of a 1-bit integer stored in array.
22 : : */
23 : : #define GETBIT(array, i) ((array[i >> 3] & bitmask[i & 0x00000007]) >> (i & 0x00000007))
24 : :
25 : : /** \def SETBIT(array, i)
26 : : * \brief set 1 to a 1-bit integer stored in an array.
27 : : * \param array to store 1-bit integer values
28 : : * \param i is the index in array to set the the bit to 1
29 : : *
30 : : * SETBIT(array, i) is a macro that sets 1 to a 1-bit integer stored in an array.
31 : : */
32 : : #define SETBIT(array, i) (array[i >> 3] |= bitmask[i & 0x00000007])
33 : :
34 : : /** \def UNSETBIT(array, i)
35 : : * \brief set 0 to a 1-bit integer stored in an array.
36 : : * \param array to store 1-bit integer values
37 : : * \param i is the index in array to set the the bit to 0
38 : : *
39 : : * UNSETBIT(array, i) is a macro that sets 0 to a 1-bit integer stored in an array.
40 : : */
41 : : #define UNSETBIT(array, i) (array[i >> 3] ^= ((bitmask[i & 0x00000007])))
42 : :
43 : : //#define GETBIT(array, i) (array[(i) / 8] & bitmask[(i) % 8])
44 : : //#define SETBIT(array, i) (array[(i) / 8] |= bitmask[(i) % 8])
45 : : //#define UNSETBIT(array, i) (array[(i) / 8] ^= ((bitmask[(i) % 8])))
46 : :
47 : :
48 : : /** \def SETVALUE1(array, i, v)
49 : : * \brief set a value for a 2-bit integer stored in an array initialized with 1s.
50 : : * \param array to store 2-bit integer values
51 : : * \param i is the index in array to set the value v
52 : : * \param v is the value to be set
53 : : *
54 : : * SETVALUE1(array, i, v) is a macro that set a value for a 2-bit integer stored in an array.
55 : : * The array should be initialized with all bits set to 1. For example:
56 : : * memset(array, 0xff, arraySize);
57 : : */
58 : : #define SETVALUE1(array, i, v) (array[i >> 2] &= (cmph_uint8)((v << ((i & 0x00000003) << 1)) | valuemask[i & 0x00000003]))
59 : :
60 : : /** \def SETVALUE0(array, i, v)
61 : : * \brief set a value for a 2-bit integer stored in an array initialized with 0s.
62 : : * \param array to store 2-bit integer values
63 : : * \param i is the index in array to set the value v
64 : : * \param v is the value to be set
65 : : *
66 : : * SETVALUE0(array, i, v) is a macro that set a value for a 2-bit integer stored in an array.
67 : : * The array should be initialized with all bits set to 0. For example:
68 : : * memset(array, 0, arraySize);
69 : : */
70 : : #define SETVALUE0(array, i, v) (array[i >> 2] |= (cmph_uint8)(v << ((i & 0x00000003) << 1)))
71 : :
72 : :
73 : : /** \def GETVALUE(array, i)
74 : : * \brief get a value for a 2-bit integer stored in an array.
75 : : * \param array to get 2-bit integer values from
76 : : * \param i is the index in array to get the value from
77 : : *
78 : : * GETVALUE(array, i) is a macro that get a value for a 2-bit integer stored in an array.
79 : : */
80 : : #define GETVALUE(array, i) ((cmph_uint8)((array[i >> 2] >> ((i & 0x00000003U) << 1U)) & 0x00000003U))
81 : :
82 : :
83 : :
84 : : /** \def SETBIT32(array, i)
85 : : * \brief set 1 to a 1-bit integer stored in an array of 32-bit words.
86 : : * \param array to store 1-bit integer values. The entries are 32-bit words.
87 : : * \param i is the index in array to set the the bit to 1
88 : : *
89 : : * SETBIT32(array, i) is a macro that sets 1 to a 1-bit integer stored in an array of 32-bit words.
90 : : */
91 : : #define SETBIT32(array, i) (array[i >> 5] |= bitmask32[i & 0x0000001f])
92 : :
93 : : /** \def GETBIT32(array, i)
94 : : * \brief get the value of a 1-bit integer stored in an array of 32-bit words.
95 : : * \param array to get 1-bit integer values from. The entries are 32-bit words.
96 : : * \param i is the index in array to get the 1-bit integer value from
97 : : *
98 : : * GETBIT32(array, i) is a macro that gets the value of a 1-bit integer stored in an array of 32-bit words.
99 : : */
100 : : #define GETBIT32(array, i) (array[i >> 5] & bitmask32[i & 0x0000001f])
101 : :
102 : : /** \def UNSETBIT32(array, i)
103 : : * \brief set 0 to a 1-bit integer stored in an array of 32-bit words.
104 : : * \param array to store 1-bit integer values. The entries ar 32-bit words
105 : : * \param i is the index in array to set the the bit to 0
106 : : *
107 : : * UNSETBIT32(array, i) is a macro that sets 0 to a 1-bit integer stored in an array of 32-bit words.
108 : : */
109 : : #define UNSETBIT32(array, i) (array[i >> 5] ^= ((bitmask32[i & 0x0000001f])))
110 : :
111 : : #define BITS_TABLE_SIZE(n, bits_length) ((n * bits_length + 31) >> 5)
112 : :
113 : 0 : static inline void set_bits_value(cmph_uint32 * bits_table, cmph_uint32 index, cmph_uint32 bits_string,
114 : : cmph_uint32 string_length, cmph_uint32 string_mask)
115 : : {
116 : 0 : register cmph_uint32 bit_idx = index * string_length;
117 : 0 : register cmph_uint32 word_idx = bit_idx >> 5;
118 : 0 : register cmph_uint32 shift1 = bit_idx & 0x0000001f;
119 : 0 : register cmph_uint32 shift2 = 32 - shift1;
120 : :
121 : 0 : bits_table[word_idx] &= ~((string_mask) << shift1);
122 : 0 : bits_table[word_idx] |= bits_string << shift1;
123 : :
124 : 0 : if(shift2 < string_length)
125 : : {
126 : 0 : bits_table[word_idx+1] &= ~((string_mask) >> shift2);
127 : 0 : bits_table[word_idx+1] |= bits_string >> shift2;
128 : : };
129 : 0 : };
130 : :
131 : 0 : static inline cmph_uint32 get_bits_value(cmph_uint32 * bits_table,cmph_uint32 index, cmph_uint32 string_length, cmph_uint32 string_mask)
132 : : {
133 : 0 : register cmph_uint32 bit_idx = index * string_length;
134 : 0 : register cmph_uint32 word_idx = bit_idx >> 5;
135 : 0 : register cmph_uint32 shift1 = bit_idx & 0x0000001f;
136 : 0 : register cmph_uint32 shift2 = 32-shift1;
137 : : register cmph_uint32 bits_string;
138 : :
139 : 0 : bits_string = (bits_table[word_idx] >> shift1) & string_mask;
140 : :
141 : 0 : if(shift2 < string_length)
142 : 0 : bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
143 : :
144 : 0 : return bits_string;
145 : : };
146 : :
147 : 0 : static inline void set_bits_at_pos(cmph_uint32 * bits_table, cmph_uint32 pos, cmph_uint32 bits_string, cmph_uint32 string_length)
148 : : {
149 : 0 : register cmph_uint32 word_idx = pos >> 5;
150 : 0 : register cmph_uint32 shift1 = pos & 0x0000001f;
151 : 0 : register cmph_uint32 shift2 = 32-shift1;
152 : 0 : register cmph_uint32 string_mask = (1U << string_length) - 1;
153 : :
154 : 0 : bits_table[word_idx] &= ~((string_mask) << shift1);
155 : 0 : bits_table[word_idx] |= bits_string << shift1;
156 : 0 : if(shift2 < string_length)
157 : : {
158 : 0 : bits_table[word_idx+1] &= ~((string_mask) >> shift2);
159 : 0 : bits_table[word_idx+1] |= bits_string >> shift2;
160 : : }
161 : 0 : };
162 : :
163 : 0 : static inline cmph_uint32 get_bits_at_pos(cmph_uint32 * bits_table,cmph_uint32 pos,cmph_uint32 string_length)
164 : : {
165 : 0 : register cmph_uint32 word_idx = pos >> 5;
166 : 0 : register cmph_uint32 shift1 = pos & 0x0000001f;
167 : 0 : register cmph_uint32 shift2 = 32 - shift1;
168 : 0 : register cmph_uint32 string_mask = (1U << string_length) - 1;
169 : : register cmph_uint32 bits_string;
170 : :
171 : 0 : bits_string = (bits_table[word_idx] >> shift1) & string_mask;
172 : :
173 : 0 : if(shift2 < string_length)
174 : 0 : bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
175 : 0 : return bits_string;
176 : : }
177 : :
178 : :
179 : : #endif
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