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Diffstat (limited to 'third_party/git/ewah/ewok_rlw.h')
| -rw-r--r-- | third_party/git/ewah/ewok_rlw.h | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/third_party/git/ewah/ewok_rlw.h b/third_party/git/ewah/ewok_rlw.h deleted file mode 100644 index bafa24f4c3..0000000000 --- a/third_party/git/ewah/ewok_rlw.h +++ /dev/null @@ -1,114 +0,0 @@ -/** - * Copyright 2013, GitHub, Inc - * Copyright 2009-2013, Daniel Lemire, Cliff Moon, - * David McIntosh, Robert Becho, Google Inc. and Veronika Zenz - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ -#ifndef __EWOK_RLW_H__ -#define __EWOK_RLW_H__ - -#include "ewok.h" - -#define RLW_RUNNING_BITS (sizeof(eword_t) * 4) -#define RLW_LITERAL_BITS (sizeof(eword_t) * 8 - 1 - RLW_RUNNING_BITS) - -#define RLW_LARGEST_RUNNING_COUNT (((eword_t)1 << RLW_RUNNING_BITS) - 1) -#define RLW_LARGEST_LITERAL_COUNT (((eword_t)1 << RLW_LITERAL_BITS) - 1) - -#define RLW_LARGEST_RUNNING_COUNT_SHIFT (RLW_LARGEST_RUNNING_COUNT << 1) - -#define RLW_RUNNING_LEN_PLUS_BIT (((eword_t)1 << (RLW_RUNNING_BITS + 1)) - 1) - -static inline int rlw_get_run_bit(const eword_t *word) -{ - return *word & (eword_t)1; -} - -static inline void rlw_set_run_bit(eword_t *word, int b) -{ - if (b) { - *word |= (eword_t)1; - } else { - *word &= (eword_t)(~1); - } -} - -static inline void rlw_xor_run_bit(eword_t *word) -{ - if (*word & 1) { - *word &= (eword_t)(~1); - } else { - *word |= (eword_t)1; - } -} - -static inline void rlw_set_running_len(eword_t *word, eword_t l) -{ - *word |= RLW_LARGEST_RUNNING_COUNT_SHIFT; - *word &= (l << 1) | (~RLW_LARGEST_RUNNING_COUNT_SHIFT); -} - -static inline eword_t rlw_get_running_len(const eword_t *word) -{ - return (*word >> 1) & RLW_LARGEST_RUNNING_COUNT; -} - -static inline eword_t rlw_get_literal_words(const eword_t *word) -{ - return *word >> (1 + RLW_RUNNING_BITS); -} - -static inline void rlw_set_literal_words(eword_t *word, eword_t l) -{ - *word |= ~RLW_RUNNING_LEN_PLUS_BIT; - *word &= (l << (RLW_RUNNING_BITS + 1)) | RLW_RUNNING_LEN_PLUS_BIT; -} - -static inline eword_t rlw_size(const eword_t *self) -{ - return rlw_get_running_len(self) + rlw_get_literal_words(self); -} - -struct rlw_iterator { - const eword_t *buffer; - size_t size; - size_t pointer; - size_t literal_word_start; - - struct { - const eword_t *word; - int literal_words; - int running_len; - int literal_word_offset; - int running_bit; - } rlw; -}; - -void rlwit_init(struct rlw_iterator *it, struct ewah_bitmap *bitmap); -void rlwit_discard_first_words(struct rlw_iterator *it, size_t x); -size_t rlwit_discharge( - struct rlw_iterator *it, struct ewah_bitmap *out, size_t max, int negate); - -static inline size_t rlwit_word_size(struct rlw_iterator *it) -{ - return it->rlw.running_len + it->rlw.literal_words; -} - -static inline size_t rlwit_literal_words(struct rlw_iterator *it) -{ - return it->pointer - it->rlw.literal_words; -} - -#endif |