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authorEric S. Raymond <esr@thyrsus.com>2010-04-14 01:08:51 -0400
committerEric S. Raymond <esr@thyrsus.com>2010-04-14 01:08:51 -0400
commit12035915af9998df596f1cb3f9ee2406cc99f244 (patch)
tree460e5a9b421ae45da9e26ba5635fb5916019b9d0 /crc24q.c
parent2daef1ab8aafd0afe69cf80866a0dd390a269370 (diff)
downloadgpsd-12035915af9998df596f1cb3f9ee2406cc99f244.tar.gz
Reindent some utility modules. All regression tests pass.
Diffstat (limited to 'crc24q.c')
-rw-r--r--crc24q.c151
1 files changed, 74 insertions, 77 deletions
diff --git a/crc24q.c b/crc24q.c
index 0cb88a68..c58e0427 100644
--- a/crc24q.c
+++ b/crc24q.c
@@ -40,10 +40,9 @@
unsigned table[25];
#define CRCSEED 0 /* could be NZ to detect leading zeros */
-#define CRCPOLY 0x1864CFB /* encodes all info about the polynomial */
+#define CRCPOLY 0x1864CFB /* encodes all info about the polynomial */
-static void
-crc_init(unsigned table[256])
+static void crc_init(unsigned table[256])
{
unsigned i, j;
unsigned h;
@@ -55,7 +54,7 @@ crc_init(unsigned table[256])
if ((h <<= 1) & 0x1000000)
h ^= CRCPOLY;
for (j = 0; j < i; j++)
- table[i+j] = table[j] ^ h;
+ table[i + j] = table[j] ^ h;
}
}
@@ -76,70 +75,70 @@ int main(int argc, char *argv[])
#endif
static const unsigned crc24q[256] = {
- 0x00000000, 0x01864CFB, 0x028AD50D, 0x030C99F6,
- 0x0493E6E1, 0x0515AA1A, 0x061933EC, 0x079F7F17,
- 0x08A18139, 0x0927CDC2, 0x0A2B5434, 0x0BAD18CF,
- 0x0C3267D8, 0x0DB42B23, 0x0EB8B2D5, 0x0F3EFE2E,
- 0x10C54E89, 0x11430272, 0x124F9B84, 0x13C9D77F,
- 0x1456A868, 0x15D0E493, 0x16DC7D65, 0x175A319E,
- 0x1864CFB0, 0x19E2834B, 0x1AEE1ABD, 0x1B685646,
- 0x1CF72951, 0x1D7165AA, 0x1E7DFC5C, 0x1FFBB0A7,
- 0x200CD1E9, 0x218A9D12, 0x228604E4, 0x2300481F,
- 0x249F3708, 0x25197BF3, 0x2615E205, 0x2793AEFE,
- 0x28AD50D0, 0x292B1C2B, 0x2A2785DD, 0x2BA1C926,
- 0x2C3EB631, 0x2DB8FACA, 0x2EB4633C, 0x2F322FC7,
- 0x30C99F60, 0x314FD39B, 0x32434A6D, 0x33C50696,
- 0x345A7981, 0x35DC357A, 0x36D0AC8C, 0x3756E077,
- 0x38681E59, 0x39EE52A2, 0x3AE2CB54, 0x3B6487AF,
- 0x3CFBF8B8, 0x3D7DB443, 0x3E712DB5, 0x3FF7614E,
- 0x4019A3D2, 0x419FEF29, 0x429376DF, 0x43153A24,
- 0x448A4533, 0x450C09C8, 0x4600903E, 0x4786DCC5,
- 0x48B822EB, 0x493E6E10, 0x4A32F7E6, 0x4BB4BB1D,
- 0x4C2BC40A, 0x4DAD88F1, 0x4EA11107, 0x4F275DFC,
- 0x50DCED5B, 0x515AA1A0, 0x52563856, 0x53D074AD,
- 0x544F0BBA, 0x55C94741, 0x56C5DEB7, 0x5743924C,
- 0x587D6C62, 0x59FB2099, 0x5AF7B96F, 0x5B71F594,
- 0x5CEE8A83, 0x5D68C678, 0x5E645F8E, 0x5FE21375,
- 0x6015723B, 0x61933EC0, 0x629FA736, 0x6319EBCD,
- 0x648694DA, 0x6500D821, 0x660C41D7, 0x678A0D2C,
- 0x68B4F302, 0x6932BFF9, 0x6A3E260F, 0x6BB86AF4,
- 0x6C2715E3, 0x6DA15918, 0x6EADC0EE, 0x6F2B8C15,
- 0x70D03CB2, 0x71567049, 0x725AE9BF, 0x73DCA544,
- 0x7443DA53, 0x75C596A8, 0x76C90F5E, 0x774F43A5,
- 0x7871BD8B, 0x79F7F170, 0x7AFB6886, 0x7B7D247D,
- 0x7CE25B6A, 0x7D641791, 0x7E688E67, 0x7FEEC29C,
- 0x803347A4, 0x81B50B5F, 0x82B992A9, 0x833FDE52,
- 0x84A0A145, 0x8526EDBE, 0x862A7448, 0x87AC38B3,
- 0x8892C69D, 0x89148A66, 0x8A181390, 0x8B9E5F6B,
- 0x8C01207C, 0x8D876C87, 0x8E8BF571, 0x8F0DB98A,
- 0x90F6092D, 0x917045D6, 0x927CDC20, 0x93FA90DB,
- 0x9465EFCC, 0x95E3A337, 0x96EF3AC1, 0x9769763A,
- 0x98578814, 0x99D1C4EF, 0x9ADD5D19, 0x9B5B11E2,
- 0x9CC46EF5, 0x9D42220E, 0x9E4EBBF8, 0x9FC8F703,
- 0xA03F964D, 0xA1B9DAB6, 0xA2B54340, 0xA3330FBB,
- 0xA4AC70AC, 0xA52A3C57, 0xA626A5A1, 0xA7A0E95A,
- 0xA89E1774, 0xA9185B8F, 0xAA14C279, 0xAB928E82,
- 0xAC0DF195, 0xAD8BBD6E, 0xAE872498, 0xAF016863,
- 0xB0FAD8C4, 0xB17C943F, 0xB2700DC9, 0xB3F64132,
- 0xB4693E25, 0xB5EF72DE, 0xB6E3EB28, 0xB765A7D3,
- 0xB85B59FD, 0xB9DD1506, 0xBAD18CF0, 0xBB57C00B,
- 0xBCC8BF1C, 0xBD4EF3E7, 0xBE426A11, 0xBFC426EA,
- 0xC02AE476, 0xC1ACA88D, 0xC2A0317B, 0xC3267D80,
- 0xC4B90297, 0xC53F4E6C, 0xC633D79A, 0xC7B59B61,
- 0xC88B654F, 0xC90D29B4, 0xCA01B042, 0xCB87FCB9,
- 0xCC1883AE, 0xCD9ECF55, 0xCE9256A3, 0xCF141A58,
- 0xD0EFAAFF, 0xD169E604, 0xD2657FF2, 0xD3E33309,
- 0xD47C4C1E, 0xD5FA00E5, 0xD6F69913, 0xD770D5E8,
- 0xD84E2BC6, 0xD9C8673D, 0xDAC4FECB, 0xDB42B230,
- 0xDCDDCD27, 0xDD5B81DC, 0xDE57182A, 0xDFD154D1,
- 0xE026359F, 0xE1A07964, 0xE2ACE092, 0xE32AAC69,
- 0xE4B5D37E, 0xE5339F85, 0xE63F0673, 0xE7B94A88,
- 0xE887B4A6, 0xE901F85D, 0xEA0D61AB, 0xEB8B2D50,
- 0xEC145247, 0xED921EBC, 0xEE9E874A, 0xEF18CBB1,
- 0xF0E37B16, 0xF16537ED, 0xF269AE1B, 0xF3EFE2E0,
- 0xF4709DF7, 0xF5F6D10C, 0xF6FA48FA, 0xF77C0401,
- 0xF842FA2F, 0xF9C4B6D4, 0xFAC82F22, 0xFB4E63D9,
- 0xFCD11CCE, 0xFD575035, 0xFE5BC9C3, 0xFFDD8538,
+ 0x00000000, 0x01864CFB, 0x028AD50D, 0x030C99F6,
+ 0x0493E6E1, 0x0515AA1A, 0x061933EC, 0x079F7F17,
+ 0x08A18139, 0x0927CDC2, 0x0A2B5434, 0x0BAD18CF,
+ 0x0C3267D8, 0x0DB42B23, 0x0EB8B2D5, 0x0F3EFE2E,
+ 0x10C54E89, 0x11430272, 0x124F9B84, 0x13C9D77F,
+ 0x1456A868, 0x15D0E493, 0x16DC7D65, 0x175A319E,
+ 0x1864CFB0, 0x19E2834B, 0x1AEE1ABD, 0x1B685646,
+ 0x1CF72951, 0x1D7165AA, 0x1E7DFC5C, 0x1FFBB0A7,
+ 0x200CD1E9, 0x218A9D12, 0x228604E4, 0x2300481F,
+ 0x249F3708, 0x25197BF3, 0x2615E205, 0x2793AEFE,
+ 0x28AD50D0, 0x292B1C2B, 0x2A2785DD, 0x2BA1C926,
+ 0x2C3EB631, 0x2DB8FACA, 0x2EB4633C, 0x2F322FC7,
+ 0x30C99F60, 0x314FD39B, 0x32434A6D, 0x33C50696,
+ 0x345A7981, 0x35DC357A, 0x36D0AC8C, 0x3756E077,
+ 0x38681E59, 0x39EE52A2, 0x3AE2CB54, 0x3B6487AF,
+ 0x3CFBF8B8, 0x3D7DB443, 0x3E712DB5, 0x3FF7614E,
+ 0x4019A3D2, 0x419FEF29, 0x429376DF, 0x43153A24,
+ 0x448A4533, 0x450C09C8, 0x4600903E, 0x4786DCC5,
+ 0x48B822EB, 0x493E6E10, 0x4A32F7E6, 0x4BB4BB1D,
+ 0x4C2BC40A, 0x4DAD88F1, 0x4EA11107, 0x4F275DFC,
+ 0x50DCED5B, 0x515AA1A0, 0x52563856, 0x53D074AD,
+ 0x544F0BBA, 0x55C94741, 0x56C5DEB7, 0x5743924C,
+ 0x587D6C62, 0x59FB2099, 0x5AF7B96F, 0x5B71F594,
+ 0x5CEE8A83, 0x5D68C678, 0x5E645F8E, 0x5FE21375,
+ 0x6015723B, 0x61933EC0, 0x629FA736, 0x6319EBCD,
+ 0x648694DA, 0x6500D821, 0x660C41D7, 0x678A0D2C,
+ 0x68B4F302, 0x6932BFF9, 0x6A3E260F, 0x6BB86AF4,
+ 0x6C2715E3, 0x6DA15918, 0x6EADC0EE, 0x6F2B8C15,
+ 0x70D03CB2, 0x71567049, 0x725AE9BF, 0x73DCA544,
+ 0x7443DA53, 0x75C596A8, 0x76C90F5E, 0x774F43A5,
+ 0x7871BD8B, 0x79F7F170, 0x7AFB6886, 0x7B7D247D,
+ 0x7CE25B6A, 0x7D641791, 0x7E688E67, 0x7FEEC29C,
+ 0x803347A4, 0x81B50B5F, 0x82B992A9, 0x833FDE52,
+ 0x84A0A145, 0x8526EDBE, 0x862A7448, 0x87AC38B3,
+ 0x8892C69D, 0x89148A66, 0x8A181390, 0x8B9E5F6B,
+ 0x8C01207C, 0x8D876C87, 0x8E8BF571, 0x8F0DB98A,
+ 0x90F6092D, 0x917045D6, 0x927CDC20, 0x93FA90DB,
+ 0x9465EFCC, 0x95E3A337, 0x96EF3AC1, 0x9769763A,
+ 0x98578814, 0x99D1C4EF, 0x9ADD5D19, 0x9B5B11E2,
+ 0x9CC46EF5, 0x9D42220E, 0x9E4EBBF8, 0x9FC8F703,
+ 0xA03F964D, 0xA1B9DAB6, 0xA2B54340, 0xA3330FBB,
+ 0xA4AC70AC, 0xA52A3C57, 0xA626A5A1, 0xA7A0E95A,
+ 0xA89E1774, 0xA9185B8F, 0xAA14C279, 0xAB928E82,
+ 0xAC0DF195, 0xAD8BBD6E, 0xAE872498, 0xAF016863,
+ 0xB0FAD8C4, 0xB17C943F, 0xB2700DC9, 0xB3F64132,
+ 0xB4693E25, 0xB5EF72DE, 0xB6E3EB28, 0xB765A7D3,
+ 0xB85B59FD, 0xB9DD1506, 0xBAD18CF0, 0xBB57C00B,
+ 0xBCC8BF1C, 0xBD4EF3E7, 0xBE426A11, 0xBFC426EA,
+ 0xC02AE476, 0xC1ACA88D, 0xC2A0317B, 0xC3267D80,
+ 0xC4B90297, 0xC53F4E6C, 0xC633D79A, 0xC7B59B61,
+ 0xC88B654F, 0xC90D29B4, 0xCA01B042, 0xCB87FCB9,
+ 0xCC1883AE, 0xCD9ECF55, 0xCE9256A3, 0xCF141A58,
+ 0xD0EFAAFF, 0xD169E604, 0xD2657FF2, 0xD3E33309,
+ 0xD47C4C1E, 0xD5FA00E5, 0xD6F69913, 0xD770D5E8,
+ 0xD84E2BC6, 0xD9C8673D, 0xDAC4FECB, 0xDB42B230,
+ 0xDCDDCD27, 0xDD5B81DC, 0xDE57182A, 0xDFD154D1,
+ 0xE026359F, 0xE1A07964, 0xE2ACE092, 0xE32AAC69,
+ 0xE4B5D37E, 0xE5339F85, 0xE63F0673, 0xE7B94A88,
+ 0xE887B4A6, 0xE901F85D, 0xEA0D61AB, 0xEB8B2D50,
+ 0xEC145247, 0xED921EBC, 0xEE9E874A, 0xEF18CBB1,
+ 0xF0E37B16, 0xF16537ED, 0xF269AE1B, 0xF3EFE2E0,
+ 0xF4709DF7, 0xF5F6D10C, 0xF6FA48FA, 0xF77C0401,
+ 0xF842FA2F, 0xF9C4B6D4, 0xFAC82F22, 0xFB4E63D9,
+ 0xFCD11CCE, 0xFD575035, 0xFE5BC9C3, 0xFFDD8538,
};
unsigned crc24q_hash(unsigned char *data, int len)
@@ -148,7 +147,7 @@ unsigned crc24q_hash(unsigned char *data, int len)
unsigned crc = 0;
for (i = 0; i < len; i++) {
- crc = (crc << 8) ^ crc24q[data[i] ^ (unsigned char)(crc>>16)];
+ crc = (crc << 8) ^ crc24q[data[i] ^ (unsigned char)(crc >> 16)];
}
crc = (crc & 0x00ffffff);
@@ -164,17 +163,15 @@ void crc24q_sign(unsigned char *data, int len)
{
unsigned crc = crc24q_hash(data, len);
- data[len] = HI(crc);
- data[len+1] = MID(crc);
- data[len+2] = LO(crc);
+ data[len] = HI(crc);
+ data[len + 1] = MID(crc);
+ data[len + 2] = LO(crc);
}
bool crc24q_check(unsigned char *data, int len)
{
- unsigned crc = crc24q_hash(data, len-3);
+ unsigned crc = crc24q_hash(data, len - 3);
- return (((data[len-3] == HI(crc)) &&
- (data[len-2] == MID(crc)) &&
- (data[len-1] == LO(crc))));
+ return (((data[len - 3] == HI(crc)) &&
+ (data[len - 2] == MID(crc)) && (data[len - 1] == LO(crc))));
}
-