Harald Welte | 468b643 | 2014-09-11 13:05:51 +0800 | [diff] [blame] | 1 | /* |
| 2 | * (C) 2011 by Harald Welte <laforge@gnumonks.org> |
| 3 | * (C) 2011 by Sylvain Munaut <tnt@246tNt.com> |
| 4 | * |
| 5 | * All Rights Reserved |
| 6 | * |
Harald Welte | e08da97 | 2017-11-13 01:00:26 +0900 | [diff] [blame] | 7 | * SPDX-License-Identifier: GPL-2.0+ |
| 8 | * |
Harald Welte | 468b643 | 2014-09-11 13:05:51 +0800 | [diff] [blame] | 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
Harald Welte | 468b643 | 2014-09-11 13:05:51 +0800 | [diff] [blame] | 19 | */ |
Harald Welte | 2230c13 | 2011-01-19 10:10:16 +0100 | [diff] [blame] | 20 | |
| 21 | #include <stdint.h> |
| 22 | |
Pablo Neira Ayuso | 8341934 | 2011-03-22 16:36:13 +0100 | [diff] [blame] | 23 | #include <osmocom/core/bits.h> |
Harald Welte | 2230c13 | 2011-01-19 10:10:16 +0100 | [diff] [blame] | 24 | |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 25 | /*! \addtogroup bits |
| 26 | * @{ |
Neels Hofmeyr | 17518fe | 2017-06-20 04:35:06 +0200 | [diff] [blame] | 27 | * Osmocom bit level support code. |
| 28 | * |
Harald Welte | ef7a44e | 2017-10-16 14:18:17 +0200 | [diff] [blame] | 29 | * This module implements the notion of different bit-fields, such as |
| 30 | * - unpacked bits (\ref ubit_t), i.e. 1 bit per byte |
| 31 | * - packed bits (\ref pbit_t), i.e. 8 bits per byte |
| 32 | * - soft bits (\ref sbit_t), 1 bit per byte from -127 to 127 |
| 33 | * |
Neels Hofmeyr | 17518fe | 2017-06-20 04:35:06 +0200 | [diff] [blame] | 34 | * \file bits.c */ |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 35 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 36 | /*! convert unpacked bits to packed bits, return length in bytes |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 37 | * \param[out] out output buffer of packed bits |
| 38 | * \param[in] in input buffer of unpacked bits |
| 39 | * \param[in] num_bits number of bits |
| 40 | */ |
Harald Welte | 2230c13 | 2011-01-19 10:10:16 +0100 | [diff] [blame] | 41 | int osmo_ubit2pbit(pbit_t *out, const ubit_t *in, unsigned int num_bits) |
| 42 | { |
| 43 | unsigned int i; |
| 44 | uint8_t curbyte = 0; |
| 45 | pbit_t *outptr = out; |
| 46 | |
| 47 | for (i = 0; i < num_bits; i++) { |
| 48 | uint8_t bitnum = 7 - (i % 8); |
| 49 | |
| 50 | curbyte |= (in[i] << bitnum); |
| 51 | |
Christian Vogel | c7f84e9 | 2011-01-22 22:48:37 +0100 | [diff] [blame] | 52 | if(i % 8 == 7){ |
Harald Welte | 2230c13 | 2011-01-19 10:10:16 +0100 | [diff] [blame] | 53 | *outptr++ = curbyte; |
| 54 | curbyte = 0; |
| 55 | } |
| 56 | } |
| 57 | /* we have a non-modulo-8 bitcount */ |
| 58 | if (i % 8) |
| 59 | *outptr++ = curbyte; |
| 60 | |
| 61 | return outptr - out; |
| 62 | } |
| 63 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 64 | /*! Shift unaligned input to octet-aligned output |
Max | e0a7d9e | 2016-06-17 17:58:52 +0200 | [diff] [blame] | 65 | * \param[out] out output buffer, unaligned |
| 66 | * \param[in] in input buffer, octet-aligned |
| 67 | * \param[in] num_nibbles number of nibbles |
| 68 | */ |
| 69 | void osmo_nibble_shift_right(uint8_t *out, const uint8_t *in, |
| 70 | unsigned int num_nibbles) |
| 71 | { |
| 72 | unsigned int i, num_whole_bytes = num_nibbles / 2; |
| 73 | if (!num_whole_bytes) |
| 74 | return; |
| 75 | |
| 76 | /* first byte: upper nibble empty, lower nibble from src */ |
| 77 | out[0] = (in[0] >> 4); |
| 78 | |
| 79 | /* bytes 1.. */ |
| 80 | for (i = 1; i < num_whole_bytes; i++) |
| 81 | out[i] = ((in[i - 1] & 0xF) << 4) | (in[i] >> 4); |
| 82 | |
| 83 | /* shift the last nibble, in case there's an odd count */ |
| 84 | i = num_whole_bytes; |
| 85 | if (num_nibbles & 1) |
| 86 | out[i] = ((in[i - 1] & 0xF) << 4) | (in[i] >> 4); |
| 87 | else |
| 88 | out[i] = (in[i - 1] & 0xF) << 4; |
| 89 | } |
| 90 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 91 | /*! Shift unaligned input to octet-aligned output |
Max | e0a7d9e | 2016-06-17 17:58:52 +0200 | [diff] [blame] | 92 | * \param[out] out output buffer, octet-aligned |
| 93 | * \param[in] in input buffer, unaligned |
| 94 | * \param[in] num_nibbles number of nibbles |
| 95 | */ |
| 96 | void osmo_nibble_shift_left_unal(uint8_t *out, const uint8_t *in, |
| 97 | unsigned int num_nibbles) |
| 98 | { |
| 99 | unsigned int i, num_whole_bytes = num_nibbles / 2; |
| 100 | if (!num_whole_bytes) |
| 101 | return; |
| 102 | |
| 103 | for (i = 0; i < num_whole_bytes; i++) |
| 104 | out[i] = ((in[i] & 0xF) << 4) | (in[i + 1] >> 4); |
| 105 | |
| 106 | /* shift the last nibble, in case there's an odd count */ |
| 107 | i = num_whole_bytes; |
| 108 | if (num_nibbles & 1) |
| 109 | out[i] = (in[i] & 0xF) << 4; |
| 110 | } |
| 111 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 112 | /*! convert unpacked bits to soft bits |
Max | d8fb142 | 2016-04-06 16:13:00 +0200 | [diff] [blame] | 113 | * \param[out] out output buffer of soft bits |
| 114 | * \param[in] in input buffer of unpacked bits |
| 115 | * \param[in] num_bits number of bits |
| 116 | */ |
| 117 | void osmo_ubit2sbit(sbit_t *out, const ubit_t *in, unsigned int num_bits) |
| 118 | { |
| 119 | unsigned int i; |
| 120 | for (i = 0; i < num_bits; i++) |
| 121 | out[i] = in[i] ? -127 : 127; |
| 122 | } |
| 123 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 124 | /*! convert soft bits to unpacked bits |
Max | d8fb142 | 2016-04-06 16:13:00 +0200 | [diff] [blame] | 125 | * \param[out] out output buffer of unpacked bits |
| 126 | * \param[in] in input buffer of soft bits |
| 127 | * \param[in] num_bits number of bits |
| 128 | */ |
| 129 | void osmo_sbit2ubit(ubit_t *out, const sbit_t *in, unsigned int num_bits) |
| 130 | { |
| 131 | unsigned int i; |
| 132 | for (i = 0; i < num_bits; i++) |
| 133 | out[i] = in[i] < 0; |
| 134 | } |
| 135 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 136 | /*! convert packed bits to unpacked bits, return length in bytes |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 137 | * \param[out] out output buffer of unpacked bits |
| 138 | * \param[in] in input buffer of packed bits |
| 139 | * \param[in] num_bits number of bits |
Harald Welte | 2d2e2cc | 2016-04-25 12:11:20 +0200 | [diff] [blame] | 140 | * \return number of bytes used in \ref out |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 141 | */ |
Harald Welte | 2230c13 | 2011-01-19 10:10:16 +0100 | [diff] [blame] | 142 | int osmo_pbit2ubit(ubit_t *out, const pbit_t *in, unsigned int num_bits) |
| 143 | { |
| 144 | unsigned int i; |
| 145 | ubit_t *cur = out; |
| 146 | ubit_t *limit = out + num_bits; |
| 147 | |
| 148 | for (i = 0; i < (num_bits/8)+1; i++) { |
| 149 | pbit_t byte = in[i]; |
| 150 | *cur++ = (byte >> 7) & 1; |
| 151 | if (cur >= limit) |
| 152 | break; |
| 153 | *cur++ = (byte >> 6) & 1; |
| 154 | if (cur >= limit) |
| 155 | break; |
| 156 | *cur++ = (byte >> 5) & 1; |
| 157 | if (cur >= limit) |
| 158 | break; |
| 159 | *cur++ = (byte >> 4) & 1; |
| 160 | if (cur >= limit) |
| 161 | break; |
| 162 | *cur++ = (byte >> 3) & 1; |
| 163 | if (cur >= limit) |
| 164 | break; |
| 165 | *cur++ = (byte >> 2) & 1; |
| 166 | if (cur >= limit) |
| 167 | break; |
| 168 | *cur++ = (byte >> 1) & 1; |
| 169 | if (cur >= limit) |
| 170 | break; |
| 171 | *cur++ = (byte >> 0) & 1; |
| 172 | if (cur >= limit) |
| 173 | break; |
| 174 | } |
| 175 | return cur - out; |
| 176 | } |
Sylvain Munaut | aeb1077 | 2011-01-21 12:22:30 +0100 | [diff] [blame] | 177 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 178 | /*! convert unpacked bits to packed bits (extended options) |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 179 | * \param[out] out output buffer of packed bits |
| 180 | * \param[in] out_ofs offset into output buffer |
| 181 | * \param[in] in input buffer of unpacked bits |
| 182 | * \param[in] in_ofs offset into input buffer |
| 183 | * \param[in] num_bits number of bits |
Philipp Maier | de4e8da | 2022-10-14 12:49:24 +0200 | [diff] [blame] | 184 | * \param[in] lsb_mode Encode bits in LSB order instead of MSB |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 185 | * \returns length in bytes (max written offset of output buffer + 1) |
| 186 | */ |
Sylvain Munaut | aeb1077 | 2011-01-21 12:22:30 +0100 | [diff] [blame] | 187 | int osmo_ubit2pbit_ext(pbit_t *out, unsigned int out_ofs, |
| 188 | const ubit_t *in, unsigned int in_ofs, |
| 189 | unsigned int num_bits, int lsb_mode) |
| 190 | { |
Harald Welte | cd58e1e | 2022-01-09 12:02:33 +0100 | [diff] [blame] | 191 | unsigned int i, op, bn; |
Sylvain Munaut | aeb1077 | 2011-01-21 12:22:30 +0100 | [diff] [blame] | 192 | for (i=0; i<num_bits; i++) { |
| 193 | op = out_ofs + i; |
| 194 | bn = lsb_mode ? (op&7) : (7-(op&7)); |
| 195 | if (in[in_ofs+i]) |
| 196 | out[op>>3] |= 1 << bn; |
| 197 | else |
| 198 | out[op>>3] &= ~(1 << bn); |
| 199 | } |
| 200 | return ((out_ofs + num_bits - 1) >> 3) + 1; |
| 201 | } |
| 202 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 203 | /*! convert packed bits to unpacked bits (extended options) |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 204 | * \param[out] out output buffer of unpacked bits |
| 205 | * \param[in] out_ofs offset into output buffer |
| 206 | * \param[in] in input buffer of packed bits |
| 207 | * \param[in] in_ofs offset into input buffer |
| 208 | * \param[in] num_bits number of bits |
Philipp Maier | de4e8da | 2022-10-14 12:49:24 +0200 | [diff] [blame] | 209 | * \param[in] lsb_mode Encode bits in LSB order instead of MSB |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 210 | * \returns length in bytes (max written offset of output buffer + 1) |
| 211 | */ |
Sylvain Munaut | aeb1077 | 2011-01-21 12:22:30 +0100 | [diff] [blame] | 212 | int osmo_pbit2ubit_ext(ubit_t *out, unsigned int out_ofs, |
| 213 | const pbit_t *in, unsigned int in_ofs, |
| 214 | unsigned int num_bits, int lsb_mode) |
| 215 | { |
Harald Welte | cd58e1e | 2022-01-09 12:02:33 +0100 | [diff] [blame] | 216 | unsigned int i, ip, bn; |
Sylvain Munaut | aeb1077 | 2011-01-21 12:22:30 +0100 | [diff] [blame] | 217 | for (i=0; i<num_bits; i++) { |
| 218 | ip = in_ofs + i; |
| 219 | bn = lsb_mode ? (ip&7) : (7-(ip&7)); |
| 220 | out[out_ofs+i] = !!(in[ip>>3] & (1<<bn)); |
| 221 | } |
| 222 | return out_ofs + num_bits; |
| 223 | } |
Harald Welte | ba6988b | 2011-08-17 12:46:48 +0200 | [diff] [blame] | 224 | |
Harald Welte | 2ba641e | 2020-08-02 10:19:32 +0200 | [diff] [blame] | 225 | /* look-up table for bit-reversal within a byte. Generated using: |
| 226 | int i,k; |
| 227 | for (i = 0 ; i < 256 ; i++) { |
| 228 | uint8_t sample = 0 ; |
| 229 | for (k = 0; k<8; k++) { |
| 230 | if ( i & 1 << k ) sample |= 0x80 >> k; |
| 231 | } |
| 232 | flip_table[i] = sample; |
| 233 | } |
| 234 | */ |
| 235 | static const uint8_t flip_table[256] = { |
| 236 | 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, |
| 237 | 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, |
| 238 | 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, |
| 239 | 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, |
| 240 | 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, |
| 241 | 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, |
| 242 | 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, |
| 243 | 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, |
| 244 | 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, |
| 245 | 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, |
| 246 | 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, |
| 247 | 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, |
| 248 | 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, |
| 249 | 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, |
| 250 | 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, |
| 251 | 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, |
| 252 | }; |
| 253 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 254 | /*! generalized bit reversal function |
Harald Welte | de6e498 | 2012-12-06 21:25:27 +0100 | [diff] [blame] | 255 | * \param[in] x the 32bit value to be reversed |
| 256 | * \param[in] k the type of reversal requested |
| 257 | * \returns the reversed 32bit dword |
| 258 | * |
| 259 | * This function reverses the bit order within a 32bit word. Depending |
| 260 | * on "k", it either reverses all bits in a 32bit dword, or the bytes in |
| 261 | * the dword, or the bits in each byte of a dword, or simply swaps the |
| 262 | * two 16bit words in a dword. See Chapter 7 "Hackers Delight" |
| 263 | */ |
Harald Welte | 712691d | 2011-09-01 14:47:31 +0200 | [diff] [blame] | 264 | uint32_t osmo_bit_reversal(uint32_t x, enum osmo_br_mode k) |
| 265 | { |
| 266 | if (k & 1) x = (x & 0x55555555) << 1 | (x & 0xAAAAAAAA) >> 1; |
| 267 | if (k & 2) x = (x & 0x33333333) << 2 | (x & 0xCCCCCCCC) >> 2; |
| 268 | if (k & 4) x = (x & 0x0F0F0F0F) << 4 | (x & 0xF0F0F0F0) >> 4; |
| 269 | if (k & 8) x = (x & 0x00FF00FF) << 8 | (x & 0xFF00FF00) >> 8; |
| 270 | if (k & 16) x = (x & 0x0000FFFF) << 16 | (x & 0xFFFF0000) >> 16; |
| 271 | |
| 272 | return x; |
| 273 | } |
| 274 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 275 | /*! reverse the bit-order in each byte of a dword |
Harald Welte | de6e498 | 2012-12-06 21:25:27 +0100 | [diff] [blame] | 276 | * \param[in] x 32bit input value |
| 277 | * \returns 32bit value where bits of each byte have been reversed |
| 278 | * |
| 279 | * See Chapter 7 "Hackers Delight" |
| 280 | */ |
Harald Welte | 712691d | 2011-09-01 14:47:31 +0200 | [diff] [blame] | 281 | uint32_t osmo_revbytebits_32(uint32_t x) |
| 282 | { |
| 283 | x = (x & 0x55555555) << 1 | (x & 0xAAAAAAAA) >> 1; |
| 284 | x = (x & 0x33333333) << 2 | (x & 0xCCCCCCCC) >> 2; |
| 285 | x = (x & 0x0F0F0F0F) << 4 | (x & 0xF0F0F0F0) >> 4; |
| 286 | |
| 287 | return x; |
| 288 | } |
| 289 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 290 | /*! reverse the bit order in a byte |
Harald Welte | de6e498 | 2012-12-06 21:25:27 +0100 | [diff] [blame] | 291 | * \param[in] x 8bit input value |
| 292 | * \returns 8bit value where bits order has been reversed |
Harald Welte | de6e498 | 2012-12-06 21:25:27 +0100 | [diff] [blame] | 293 | */ |
Harald Welte | 712691d | 2011-09-01 14:47:31 +0200 | [diff] [blame] | 294 | uint32_t osmo_revbytebits_8(uint8_t x) |
| 295 | { |
Harald Welte | 2ba641e | 2020-08-02 10:19:32 +0200 | [diff] [blame] | 296 | return flip_table[x]; |
Harald Welte | 712691d | 2011-09-01 14:47:31 +0200 | [diff] [blame] | 297 | } |
| 298 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 299 | /*! reverse bit-order of each byte in a buffer |
Katerina Barone-Adesi | c28c6a0 | 2013-02-15 13:27:59 +0100 | [diff] [blame] | 300 | * \param[in] buf buffer containing bytes to be bit-reversed |
| 301 | * \param[in] len length of buffer in bytes |
Harald Welte | de6e498 | 2012-12-06 21:25:27 +0100 | [diff] [blame] | 302 | * |
| 303 | * This function reverses the bits in each byte of the buffer |
| 304 | */ |
Harald Welte | 712691d | 2011-09-01 14:47:31 +0200 | [diff] [blame] | 305 | void osmo_revbytebits_buf(uint8_t *buf, int len) |
| 306 | { |
Harald Welte | cd58e1e | 2022-01-09 12:02:33 +0100 | [diff] [blame] | 307 | int i; |
Harald Welte | 712691d | 2011-09-01 14:47:31 +0200 | [diff] [blame] | 308 | |
Harald Welte | 2ba641e | 2020-08-02 10:19:32 +0200 | [diff] [blame] | 309 | for (i = 0; i < len; i++) |
| 310 | buf[i] = flip_table[buf[i]]; |
Harald Welte | 712691d | 2011-09-01 14:47:31 +0200 | [diff] [blame] | 311 | } |
| 312 | |
Sylvain Munaut | dca7d2c | 2012-04-18 21:53:23 +0200 | [diff] [blame] | 313 | /*! @} */ |