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Nick Terrell73f3d1b2017-08-09 19:35:53 -07001/**
2 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
3 * All rights reserved.
4 *
5 * This source code is licensed under the BSD-style license found in the
6 * LICENSE file in the root directory of https://github.com/facebook/zstd.
7 * An additional grant of patent rights can be found in the PATENTS file in the
8 * same directory.
9 *
10 * This program is free software; you can redistribute it and/or modify it under
11 * the terms of the GNU General Public License version 2 as published by the
12 * Free Software Foundation. This program is dual-licensed; you may select
13 * either version 2 of the GNU General Public License ("GPL") or BSD license
14 * ("BSD").
15 */
16
17/* Note : this module is expected to remain private, do not expose it */
18
19#ifndef ERROR_H_MODULE
20#define ERROR_H_MODULE
21
22/* ****************************************
23* Dependencies
24******************************************/
25#include <linux/types.h> /* size_t */
26#include <linux/zstd.h> /* enum list */
27
28/* ****************************************
29* Compiler-specific
30******************************************/
31#define ERR_STATIC static __attribute__((unused))
32
33/*-****************************************
34* Customization (error_public.h)
35******************************************/
36typedef ZSTD_ErrorCode ERR_enum;
37#define PREFIX(name) ZSTD_error_##name
38
39/*-****************************************
40* Error codes handling
41******************************************/
42#define ERROR(name) ((size_t)-PREFIX(name))
43
44ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); }
45
46ERR_STATIC ERR_enum ERR_getErrorCode(size_t code)
47{
48 if (!ERR_isError(code))
49 return (ERR_enum)0;
50 return (ERR_enum)(0 - code);
51}
52
53#endif /* ERROR_H_MODULE */