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fc_botelho
2009-03-16 13:07:10 +00:00
parent 579487c5cf
commit fb7de5303d
8 changed files with 617 additions and 45 deletions
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99
src/bitbool.h
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@@ -2,10 +2,15 @@
#define _CMPH_BITBOOL_H__
#include "cmph_types.h"
static const cmph_uint8 bitmask[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7 };
static const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f};
static const cmph_uint8 bitmask[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7 };
// extern const cmph_uint8 bitmask[];
static const cmph_uint32 bitmask32[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7,
1 << 8, 1 << 9, 1 << 10, 1 << 11, 1 << 12, 1 << 13, 1 << 14, 1 << 15,
1 << 16, 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 21, 1 << 22, 1 << 23,
1 << 24, 1 << 25, 1 << 26, 1 << 27, 1 << 28, 1 << 29, 1 << 30, 1 << 31
};
static const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f};
/** \def GETBIT(array, i)
@@ -39,7 +44,6 @@ static const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f};
//#define SETBIT(array, i) (array[(i) / 8] |= bitmask[(i) % 8])
//#define UNSETBIT(array, i) (array[(i) / 8] &= (~(bitmask[(i) % 8])))
extern const cmph_uint8 valuemask[];
/** \def SETVALUE1(array, i, v)
* \brief set a value for a 2-bit integer stored in an array initialized with 1s.
@@ -76,4 +80,91 @@ extern const cmph_uint8 valuemask[];
#define GETVALUE(array, i) ((array[i >> 2] >> ((i & 0x00000003) << 1)) & 0x00000003)
/** \def SETBIT32(array, i)
* \brief set 1 to an 1-bit integer stored in an array of 32-bit words.
* \param array to store 1-bit integer values. The entries are 32-bit words.
* \param i is the index in array to set the the bit to 1
*
* SETBIT32(array, i) is a macro that sets 1 to an 1-bit integer stored in an array of 32-bit words.
*/
#define SETBIT32(array, i) (array[i >> 5] |= bitmask32[i & 0x0000001f])
/** \def GETBIT32(array, i)
* \brief get the value of an 1-bit integer stored in an array of 32-bit words.
* \param array to get 1-bit integer values from. The entries are 32-bit words.
* \param i is the index in array to get the 1-bit integer value from
*
* GETBIT32(array, i) is a macro that gets the value of an 1-bit integer stored in an array of 32-bit words.
*/
#define GETBIT32(array, i) (array[i >> 5] & bitmask32[i & 0x0000001f])
#define BITS_TABLE_SIZE(n, bits_length) ((n * bits_length + 31) >> 5)
static inline void set_bits_value(cmph_uint32 * bits_table, cmph_uint32 index, cmph_uint32 bits_string,
cmph_uint32 string_length, cmph_uint32 string_mask)
{
register cmph_uint32 bit_idx = index * string_length;
register cmph_uint32 word_idx = bit_idx >> 5;
register cmph_uint32 shift1 = bit_idx & 0x0000001f;
register cmph_uint32 shift2 = 32 - shift1;
bits_table[word_idx] &= ~((string_mask) << shift1);
bits_table[word_idx] |= bits_string << shift1;
if(shift2 < string_length)
{
bits_table[word_idx+1] &= ~((string_mask) >> shift2);
bits_table[word_idx+1] |= bits_string >> shift2;
};
};
static inline cmph_uint32 get_bits_value(cmph_uint32 * bits_table,cmph_uint32 index, cmph_uint32 string_length, cmph_uint32 string_mask)
{
register cmph_uint32 bit_idx = index * string_length;
register cmph_uint32 word_idx = bit_idx >> 5;
register cmph_uint32 shift1 = bit_idx & 0x0000001f;
register cmph_uint32 shift2 = 32-shift1;
register cmph_uint32 bits_string;
bits_string = (bits_table[word_idx] >> shift1) & string_mask;
if(shift2 < string_length)
bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
return bits_string;
};
static inline void set_bits_at_pos(cmph_uint32 * bits_table, cmph_uint32 pos, cmph_uint32 bits_string, cmph_uint32 string_length)
{
register cmph_uint32 word_idx = pos >> 5;
register cmph_uint32 shift1 = pos & 0x0000001f;
register cmph_uint32 shift2 = 32-shift1;
register cmph_uint32 string_mask = (1 << string_length) - 1;
bits_table[word_idx] &= ~((string_mask) << shift1);
bits_table[word_idx] |= bits_string << shift1;
if(shift2 < string_length)
{
bits_table[word_idx+1] &= ~((string_mask) >> shift2);
bits_table[word_idx+1] |= bits_string >> shift2;
}
};
static inline cmph_uint32 get_bits_at_pos(cmph_uint32 * bits_table,cmph_uint32 pos,cmph_uint32 string_length)
{
register cmph_uint32 word_idx = pos >> 5;
register cmph_uint32 shift1 = pos & 0x0000001f;
register cmph_uint32 shift2 = 32 - shift1;
register cmph_uint32 string_mask = (1 << string_length) - 1;
register cmph_uint32 bits_string;
bits_string = (bits_table[word_idx] >> shift1) & string_mask;
if(shift2 < string_length)
bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
return bits_string;
}
#endif