81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
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/*
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* Copyright 2011, Ben Langmead <langmea@cs.jhu.edu>
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*
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* This file is part of Bowtie 2.
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*
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* Bowtie 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Bowtie 2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Bowtie 2. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef BITPACK_H_
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#define BITPACK_H_
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#include <stdint.h>
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#include "assert_helpers.h"
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/**
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* Routines for marshalling 2-bit values into and out of 8-bit or
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* 32-bit hosts
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*/
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static inline void pack_2b_in_8b(const int two, uint8_t& eight, const int off) {
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assert_lt(two, 4);
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assert_lt(off, 4);
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eight |= (two << (off*2));
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}
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static inline int unpack_2b_from_8b(const uint8_t eight, const int off) {
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assert_lt(off, 4);
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return ((eight >> (off*2)) & 0x3);
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}
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static inline void pack_2b_in_32b(const int two, uint32_t& thirty2, const int off) {
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assert_lt(two, 4);
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assert_lt(off, 16);
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thirty2 |= (two << (off*2));
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}
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static inline int unpack_2b_from_32b(const uint32_t thirty2, const int off) {
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assert_lt(off, 16);
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return ((thirty2 >> (off*2)) & 0x3);
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}
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/**
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* Routines for marshalling 1-bit values into and out of 8-bit or
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* 32-bit hosts
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*/
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static inline void pack_1b_in_8b(const int one, uint8_t& eight, const int off) {
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assert_lt(one, 2);
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assert_lt(off, 8);
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eight |= (one << off);
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}
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static inline int unpack_1b_from_8b(const uint8_t eight, const int off) {
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assert_lt(off, 2);
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return ((eight >> off) & 0x1);
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}
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static inline void pack_1b_in_32b(const int one, uint32_t& thirty2, const int off) {
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assert_lt(one, 2);
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assert_lt(off, 32);
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thirty2 |= (one << off);
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}
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static inline int unpack_1b_from_32b(const uint32_t thirty2, const int off) {
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assert_lt(off, 32);
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return ((thirty2 >> off) & 0x1);
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}
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#endif /*BITPACK_H_*/
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