/src/wireshark/wsutil/crc16-plain.h

Source (jump to first uncovered line)
/** @file
 * http://www.tty1.net/pycrc/faq_en.html#code-ownership
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

/**
 * \file crc16-plain.h
 * Functions and types for CRC checks.
 *
 * Generated on Wed Mar 18 14:12:15 2009,
 * by pycrc v0.7, http://www.tty1.net/pycrc/
 * using the configuration:
 *    Width        = 16
 *    Poly         = 0x8005
 *    XorIn        = 0x0000
 *    ReflectIn    = True
 *    XorOut       = 0x0000
 *    ReflectOut   = True
 *    Algorithm    = table-driven
 *    Direct       = True
 *
 * Modified 2009-03-16 not to include <stdint.h> as our Win32 environment
 * appears not to have it; we're using GLib types, instead.
 *****************************************************************************/
#ifndef __CRC____PLAIN_H__
#define __CRC____PLAIN_H__

#include <stddef.h>
#include <stdint.h>

#include "ws_symbol_export.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * The definition of the used algorithm.
 *****************************************************************************/
#define CRC_ALGO_TABLE_DRIVEN 1

/**
 * The type of the CRC values.
 *
 * This type must be big enough to contain at least 16 bits.
 *****************************************************************************/
typedef uint16_t crc16_plain_t;

/**
 * Reflect all bits of a \a data word of \a data_len bytes.
 *
 * \param data         The data word to be reflected.
 * \param data_len     The width of \a data expressed in number of bits.
 * \return     The reflected data.
 *****************************************************************************/
long crc16_plain_reflect(long data, size_t data_len);

/**
 * Calculate the initial crc value.
 *
 * \return     The initial crc value.
 *****************************************************************************/
static inline crc16_plain_t crc16_plain_init(void)
{
    return 0x0000;
}

/**
 * Update the crc value with new data.
 *
 * \param crc      The current crc value.
 * \param data     Pointer to a buffer of \a data_len bytes.
 * \param data_len Number of bytes in the \a data buffer.
 * \return         The updated crc value.
 *****************************************************************************/
WS_DLL_PUBLIC
crc16_plain_t crc16_plain_update(crc16_plain_t crc, const unsigned char *data, size_t data_len);

/**
 * Calculate the final crc value.
 *
 * \param crc  The current crc value.
 * \return     The final crc value.
 *****************************************************************************/
static inline crc16_plain_t crc16_plain_finalize(crc16_plain_t crc)
{
    return crc ^ 0x0000;
}

/* Generated on Tue Jul 24 09:08:46 2012,
 * by pycrc v0.7.10, http://www.tty1.net/pycrc/
 * using the configuration:
 *    Width        = 16
 *    Poly         = 0x8005
 *    XorIn        = 0x0000
 *    ReflectIn    = False
 *    XorOut       = 0x0000
 *    ReflectOut   = False
 *    Algorithm    = table-driven
 *
 * Calculate the crc-16 (x^16 + x^15 + x^2 + 1) value for data. Note that this
 * CRC is not equal to crc16_plain.
 *
 * \param data     Pointer to a buffer of \a data_len bytes.
 * \param data_len Number of bytes in the \a data buffer.
 * \return         The crc value.
 *****************************************************************************/
WS_DLL_PUBLIC
uint16_t crc16_8005_noreflect_noxor(const uint8_t *data, uint64_t data_len);


#ifdef __cplusplus
}           /* closing brace for extern "C" */
#endif

#endif      /* __CRC____PLAIN_H__ */

Coverage Report

Created: 2025-04-03 08:45

Line	Count	Source (jump to first uncovered line)
1		/** @file
2		* http://www.tty1.net/pycrc/faq_en.html#code-ownership
3		*
4		* Wireshark - Network traffic analyzer
5		* By Gerald Combs <gerald@wireshark.org>
6		* Copyright 1998 Gerald Combs
7		*
8		* SPDX-License-Identifier: GPL-2.0-or-later
9		*/
10
11		/**
12		* \file crc16-plain.h
13		* Functions and types for CRC checks.
14		*
15		* Generated on Wed Mar 18 14:12:15 2009,
16		* by pycrc v0.7, http://www.tty1.net/pycrc/
17		* using the configuration:
18		* Width = 16
19		* Poly = 0x8005
20		* XorIn = 0x0000
21		* ReflectIn = True
22		* XorOut = 0x0000
23		* ReflectOut = True
24		* Algorithm = table-driven
25		* Direct = True
26		*
27		* Modified 2009-03-16 not to include <stdint.h> as our Win32 environment
28		* appears not to have it; we're using GLib types, instead.
29		*****************************************************************************/
30		#ifndef __CRC____PLAIN_H__
31		#define __CRC____PLAIN_H__
32
33		#include <stddef.h>
34		#include <stdint.h>
35
36		#include "ws_symbol_export.h"
37
38		#ifdef __cplusplus
39		extern "C" {
40		#endif
41
42		/**
43		* The definition of the used algorithm.
44		*****************************************************************************/
45		#define CRC_ALGO_TABLE_DRIVEN 1
46
47		/**
48		* The type of the CRC values.
49		*
50		* This type must be big enough to contain at least 16 bits.
51		*****************************************************************************/
52		typedef uint16_t crc16_plain_t;
53
54		/**
55		* Reflect all bits of a \a data word of \a data_len bytes.
56		*
57		* \param data The data word to be reflected.
58		* \param data_len The width of \a data expressed in number of bits.
59		* \return The reflected data.
60		*****************************************************************************/
61		long crc16_plain_reflect(long data, size_t data_len);
62
63		/**
64		* Calculate the initial crc value.
65		*
66		* \return The initial crc value.
67		*****************************************************************************/
68		static inline crc16_plain_t crc16_plain_init(void)
69	0	{
70	0	return 0x0000;
71	0	} Unexecuted instantiation: packet-solaredge.c:crc16_plain_init Unexecuted instantiation: packet-umts_fp.c:crc16_plain_init Unexecuted instantiation: crc16-tvb.c:crc16_plain_init Unexecuted instantiation: crc16-plain.c:crc16_plain_init
72
73		/**
74		* Update the crc value with new data.
75		*
76		* \param crc The current crc value.
77		* \param data Pointer to a buffer of \a data_len bytes.
78		* \param data_len Number of bytes in the \a data buffer.
79		* \return The updated crc value.
80		*****************************************************************************/
81		WS_DLL_PUBLIC
82		crc16_plain_t crc16_plain_update(crc16_plain_t crc, const unsigned char *data, size_t data_len);
83
84		/**
85		* Calculate the final crc value.
86		*
87		* \param crc The current crc value.
88		* \return The final crc value.
89		*****************************************************************************/
90		static inline crc16_plain_t crc16_plain_finalize(crc16_plain_t crc)
91	0	{
92	0	return crc ^ 0x0000;
93	0	} Unexecuted instantiation: packet-solaredge.c:crc16_plain_finalize Unexecuted instantiation: packet-umts_fp.c:crc16_plain_finalize Unexecuted instantiation: crc16-tvb.c:crc16_plain_finalize Unexecuted instantiation: crc16-plain.c:crc16_plain_finalize
94
95		/* Generated on Tue Jul 24 09:08:46 2012,
96		* by pycrc v0.7.10, http://www.tty1.net/pycrc/
97		* using the configuration:
98		* Width = 16
99		* Poly = 0x8005
100		* XorIn = 0x0000
101		* ReflectIn = False
102		* XorOut = 0x0000
103		* ReflectOut = False
104		* Algorithm = table-driven
105		*
106		* Calculate the crc-16 (x^16 + x^15 + x^2 + 1) value for data. Note that this
107		* CRC is not equal to crc16_plain.
108		*
109		* \param data Pointer to a buffer of \a data_len bytes.
110		* \param data_len Number of bytes in the \a data buffer.
111		* \return The crc value.
112		*****************************************************************************/
113		WS_DLL_PUBLIC
114		uint16_t crc16_8005_noreflect_noxor(const uint8_t *data, uint64_t data_len);
115
116
117		#ifdef __cplusplus
118		} /* closing brace for extern "C" */
119		#endif
120
121		#endif /* __CRC____PLAIN_H__ */