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Diffstat (limited to 'girepository/cmph/bitbool.h')
| -rw-r--r-- | girepository/cmph/bitbool.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/girepository/cmph/bitbool.h b/girepository/cmph/bitbool.h new file mode 100644 index 00000000..a3286c3c --- /dev/null +++ b/girepository/cmph/bitbool.h @@ -0,0 +1,179 @@ +#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 an 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 an 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 an 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 an 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 an 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 an 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 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]) + +/** \def UNSETBIT32(array, i) + * \brief set 0 to an 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 an 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 |