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180 lines
7.1 KiB
C
180 lines
7.1 KiB
C
#ifndef _CMPH_BITBOOL_H__
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#define _CMPH_BITBOOL_H__
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#include "cmph_types.h"
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static const cmph_uint8 bitmask[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7 };
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static const cmph_uint32 bitmask32[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7,
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1 << 8, 1 << 9, 1 << 10, 1 << 11, 1 << 12, 1 << 13, 1 << 14, 1 << 15,
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1 << 16, 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 21, 1 << 22, 1 << 23,
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1 << 24, 1 << 25, 1 << 26, 1 << 27, 1 << 28, 1 << 29, 1 << 30, 1U << 31
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};
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static const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f};
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/** \def GETBIT(array, i)
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* \brief get the value of a 1-bit integer stored in an array.
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* \param array to get 1-bit integer values from
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* \param i is the index in array to get the 1-bit integer value from
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*
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* GETBIT(array, i) is a macro that gets the value of a 1-bit integer stored in array.
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*/
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#define GETBIT(array, i) ((array[i >> 3] & bitmask[i & 0x00000007]) >> (i & 0x00000007))
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/** \def SETBIT(array, i)
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* \brief set 1 to a 1-bit integer stored in an array.
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* \param array to store 1-bit integer values
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* \param i is the index in array to set the the bit to 1
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*
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* SETBIT(array, i) is a macro that sets 1 to a 1-bit integer stored in an array.
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*/
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#define SETBIT(array, i) (array[i >> 3] |= bitmask[i & 0x00000007])
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/** \def UNSETBIT(array, i)
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* \brief set 0 to a 1-bit integer stored in an array.
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* \param array to store 1-bit integer values
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* \param i is the index in array to set the the bit to 0
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*
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* UNSETBIT(array, i) is a macro that sets 0 to a 1-bit integer stored in an array.
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*/
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#define UNSETBIT(array, i) (array[i >> 3] ^= ((bitmask[i & 0x00000007])))
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//#define GETBIT(array, i) (array[(i) / 8] & bitmask[(i) % 8])
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//#define SETBIT(array, i) (array[(i) / 8] |= bitmask[(i) % 8])
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//#define UNSETBIT(array, i) (array[(i) / 8] ^= ((bitmask[(i) % 8])))
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/** \def SETVALUE1(array, i, v)
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* \brief set a value for a 2-bit integer stored in an array initialized with 1s.
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* \param array to store 2-bit integer values
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* \param i is the index in array to set the value v
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* \param v is the value to be set
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*
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* SETVALUE1(array, i, v) is a macro that set a value for a 2-bit integer stored in an array.
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* The array should be initialized with all bits set to 1. For example:
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* memset(array, 0xff, arraySize);
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*/
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#define SETVALUE1(array, i, v) (array[i >> 2] &= (cmph_uint8)((v << ((i & 0x00000003) << 1)) | valuemask[i & 0x00000003]))
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/** \def SETVALUE0(array, i, v)
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* \brief set a value for a 2-bit integer stored in an array initialized with 0s.
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* \param array to store 2-bit integer values
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* \param i is the index in array to set the value v
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* \param v is the value to be set
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*
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* SETVALUE0(array, i, v) is a macro that set a value for a 2-bit integer stored in an array.
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* The array should be initialized with all bits set to 0. For example:
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* memset(array, 0, arraySize);
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*/
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#define SETVALUE0(array, i, v) (array[i >> 2] |= (cmph_uint8)(v << ((i & 0x00000003) << 1)))
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/** \def GETVALUE(array, i)
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* \brief get a value for a 2-bit integer stored in an array.
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* \param array to get 2-bit integer values from
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* \param i is the index in array to get the value from
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*
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* GETVALUE(array, i) is a macro that get a value for a 2-bit integer stored in an array.
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*/
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#define GETVALUE(array, i) ((cmph_uint8)((array[i >> 2] >> ((i & 0x00000003U) << 1U)) & 0x00000003U))
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/** \def SETBIT32(array, i)
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* \brief set 1 to a 1-bit integer stored in an array of 32-bit words.
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* \param array to store 1-bit integer values. The entries are 32-bit words.
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* \param i is the index in array to set the the bit to 1
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*
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* SETBIT32(array, i) is a macro that sets 1 to a 1-bit integer stored in an array of 32-bit words.
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*/
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#define SETBIT32(array, i) (array[i >> 5] |= bitmask32[i & 0x0000001f])
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/** \def GETBIT32(array, i)
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* \brief get the value of a 1-bit integer stored in an array of 32-bit words.
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* \param array to get 1-bit integer values from. The entries are 32-bit words.
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* \param i is the index in array to get the 1-bit integer value from
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*
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* GETBIT32(array, i) is a macro that gets the value of a 1-bit integer stored in an array of 32-bit words.
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*/
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#define GETBIT32(array, i) (array[i >> 5] & bitmask32[i & 0x0000001f])
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/** \def UNSETBIT32(array, i)
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* \brief set 0 to a 1-bit integer stored in an array of 32-bit words.
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* \param array to store 1-bit integer values. The entries ar 32-bit words
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* \param i is the index in array to set the the bit to 0
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*
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* UNSETBIT32(array, i) is a macro that sets 0 to a 1-bit integer stored in an array of 32-bit words.
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*/
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#define UNSETBIT32(array, i) (array[i >> 5] ^= ((bitmask32[i & 0x0000001f])))
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#define BITS_TABLE_SIZE(n, bits_length) ((n * bits_length + 31) >> 5)
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static inline void set_bits_value(cmph_uint32 * bits_table, cmph_uint32 index, cmph_uint32 bits_string,
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cmph_uint32 string_length, cmph_uint32 string_mask)
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{
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register cmph_uint32 bit_idx = index * string_length;
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register cmph_uint32 word_idx = bit_idx >> 5;
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register cmph_uint32 shift1 = bit_idx & 0x0000001f;
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register cmph_uint32 shift2 = 32 - shift1;
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bits_table[word_idx] &= ~((string_mask) << shift1);
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bits_table[word_idx] |= bits_string << shift1;
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if(shift2 < string_length)
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{
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bits_table[word_idx+1] &= ~((string_mask) >> shift2);
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bits_table[word_idx+1] |= bits_string >> shift2;
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};
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};
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static inline cmph_uint32 get_bits_value(cmph_uint32 * bits_table,cmph_uint32 index, cmph_uint32 string_length, cmph_uint32 string_mask)
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{
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register cmph_uint32 bit_idx = index * string_length;
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register cmph_uint32 word_idx = bit_idx >> 5;
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register cmph_uint32 shift1 = bit_idx & 0x0000001f;
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register cmph_uint32 shift2 = 32-shift1;
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register cmph_uint32 bits_string;
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bits_string = (bits_table[word_idx] >> shift1) & string_mask;
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if(shift2 < string_length)
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bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
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return bits_string;
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};
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static inline void set_bits_at_pos(cmph_uint32 * bits_table, cmph_uint32 pos, cmph_uint32 bits_string, cmph_uint32 string_length)
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{
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register cmph_uint32 word_idx = pos >> 5;
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register cmph_uint32 shift1 = pos & 0x0000001f;
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register cmph_uint32 shift2 = 32-shift1;
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register cmph_uint32 string_mask = (1U << string_length) - 1;
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bits_table[word_idx] &= ~((string_mask) << shift1);
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bits_table[word_idx] |= bits_string << shift1;
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if(shift2 < string_length)
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{
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bits_table[word_idx+1] &= ~((string_mask) >> shift2);
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bits_table[word_idx+1] |= bits_string >> shift2;
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}
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};
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static inline cmph_uint32 get_bits_at_pos(cmph_uint32 * bits_table,cmph_uint32 pos,cmph_uint32 string_length)
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{
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register cmph_uint32 word_idx = pos >> 5;
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register cmph_uint32 shift1 = pos & 0x0000001f;
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register cmph_uint32 shift2 = 32 - shift1;
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register cmph_uint32 string_mask = (1U << string_length) - 1;
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register cmph_uint32 bits_string;
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bits_string = (bits_table[word_idx] >> shift1) & string_mask;
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if(shift2 < string_length)
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bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
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return bits_string;
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}
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#endif
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