#ifndef _CMPH_BITBOOL_H__ #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_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, 1U << 31 }; static const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f}; /** \def GETBIT(array, i) * \brief get the value of a 1-bit integer stored in an array. * \param array to get 1-bit integer values from * \param i is the index in array to get the 1-bit integer value from * * GETBIT(array, i) is a macro that gets the value of a 1-bit integer stored in array. */ #define GETBIT(array, i) ((array[i >> 3] & bitmask[i & 0x00000007]) >> (i & 0x00000007)) /** \def SETBIT(array, i) * \brief set 1 to a 1-bit integer stored in an array. * \param array to store 1-bit integer values * \param i is the index in array to set the the bit to 1 * * SETBIT(array, i) is a macro that sets 1 to a 1-bit integer stored in an array. */ #define SETBIT(array, i) (array[i >> 3] |= bitmask[i & 0x00000007]) /** \def UNSETBIT(array, i) * \brief set 0 to a 1-bit integer stored in an array. * \param array to store 1-bit integer values * \param i is the index in array to set the the bit to 0 * * UNSETBIT(array, i) is a macro that sets 0 to a 1-bit integer stored in an array. */ #define UNSETBIT(array, i) (array[i >> 3] ^= ((bitmask[i & 0x00000007]))) //#define GETBIT(array, i) (array[(i) / 8] & bitmask[(i) % 8]) //#define SETBIT(array, i) (array[(i) / 8] |= bitmask[(i) % 8]) //#define UNSETBIT(array, i) (array[(i) / 8] ^= ((bitmask[(i) % 8]))) /** \def SETVALUE1(array, i, v) * \brief set a value for a 2-bit integer stored in an array initialized with 1s. * \param array to store 2-bit integer values * \param i is the index in array to set the value v * \param v is the value to be set * * SETVALUE1(array, i, v) is a macro that set a value for a 2-bit integer stored in an array. * The array should be initialized with all bits set to 1. For example: * memset(array, 0xff, arraySize); */ #define SETVALUE1(array, i, v) (array[i >> 2] &= (cmph_uint8)((v << ((i & 0x00000003) << 1)) | valuemask[i & 0x00000003])) /** \def SETVALUE0(array, i, v) * \brief set a value for a 2-bit integer stored in an array initialized with 0s. * \param array to store 2-bit integer values * \param i is the index in array to set the value v * \param v is the value to be set * * SETVALUE0(array, i, v) is a macro that set a value for a 2-bit integer stored in an array. * The array should be initialized with all bits set to 0. For example: * memset(array, 0, arraySize); */ #define SETVALUE0(array, i, v) (array[i >> 2] |= (cmph_uint8)(v << ((i & 0x00000003) << 1))) /** \def GETVALUE(array, i) * \brief get a value for a 2-bit integer stored in an array. * \param array to get 2-bit integer values from * \param i is the index in array to get the value from * * GETVALUE(array, i) is a macro that get a value for a 2-bit integer stored in an array. */ #define GETVALUE(array, i) ((cmph_uint8)((array[i >> 2] >> ((i & 0x00000003U) << 1U)) & 0x00000003U)) /** \def SETBIT32(array, i) * \brief set 1 to a 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 a 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 a 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 a 1-bit integer stored in an array of 32-bit words. */ #define GETBIT32(array, i) (array[i >> 5] & bitmask32[i & 0x0000001f]) /** \def UNSETBIT32(array, i) * \brief set 0 to a 1-bit integer stored in an array of 32-bit words. * \param array to store 1-bit integer values. The entries ar 32-bit words * \param i is the index in array to set the the bit to 0 * * UNSETBIT32(array, i) is a macro that sets 0 to a 1-bit integer stored in an array of 32-bit words. */ #define UNSETBIT32(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 = (1U << 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 = (1U << 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