e8384ab814
(References #3882) git-svn-id: http://svn.osgeo.org/postgis/trunk@15951 b70326c6-7e19-0410-871a-916f4a2858ee
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/**********************************************************************
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*
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* PostGIS - Spatial Types for PostgreSQL
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* http://postgis.net
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*
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* PostGIS 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 2 of the License, or
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* (at your option) any later version.
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*
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* PostGIS 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 PostGIS. If not, see <http://www.gnu.org/licenses/>.
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*
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**********************************************************************
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*
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* Copyright (C) 2014 Sandro Santilli <strk@kbt.io>
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* Copyright (C) 2013 Nicklas Avén
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*
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**********************************************************************/
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#ifndef _LIBLWGEOM_VARINT_H
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#define _LIBLWGEOM_VARINT_H 1
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#include <stdint.h>
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#include <stdlib.h>
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/* NEW SIGNATURES */
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size_t varint_u32_encode_buf(uint32_t val, uint8_t *buf);
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size_t varint_s32_encode_buf(int32_t val, uint8_t *buf);
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size_t varint_u64_encode_buf(uint64_t val, uint8_t *buf);
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size_t varint_s64_encode_buf(int64_t val, uint8_t *buf);
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int64_t varint_s64_decode(const uint8_t *the_start, const uint8_t *the_end, size_t *size);
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uint64_t varint_u64_decode(const uint8_t *the_start, const uint8_t *the_end, size_t *size);
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size_t varint_size(const uint8_t *the_start, const uint8_t *the_end);
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/* Support from -INT{8,32,64}_MAX to INT{8,32,64}_MAX),
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* e.g INT8_MIN is not supported in zigzag8 */
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uint64_t zigzag64(int64_t val);
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uint32_t zigzag32(int32_t val);
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uint8_t zigzag8(int8_t val);
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int64_t unzigzag64(uint64_t val);
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int32_t unzigzag32(uint32_t val);
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int8_t unzigzag8(uint8_t val);
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#endif /* !defined _LIBLWGEOM_VARINT_H */
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