diff options
Diffstat (limited to 'fs/udf/crc.c')
| -rw-r--r-- | fs/udf/crc.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/fs/udf/crc.c b/fs/udf/crc.c index 1b82a4adc2f..85aaee5fab2 100644 --- a/fs/udf/crc.c +++ b/fs/udf/crc.c @@ -79,8 +79,7 @@ static uint16_t crc_table[256] = { * July 21, 1997 - Andrew E. Mileski * Adapted from OSTA-UDF(tm) 1.50 standard. */ -uint16_t -udf_crc(uint8_t *data, uint32_t size, uint16_t crc) +uint16_t udf_crc(uint8_t * data, uint32_t size, uint16_t crc) { while (size--) crc = crc_table[(crc >> 8 ^ *(data++)) & 0xffU] ^ (crc << 8); @@ -106,8 +105,8 @@ int main(void) { unsigned short x; - x = udf_crc16(bytes, sizeof bytes); - printf("udf_crc16: calculated = %4.4x, correct = %4.4x\n", x, 0x3299U); + x = udf_crc(bytes, sizeof bytes); + printf("udf_crc: calculated = %4.4x, correct = %4.4x\n", x, 0x3299U); return 0; } @@ -138,7 +137,7 @@ int main(int argc, char **argv) /* Get the polynomial */ sscanf(argv[1], "%lo", &poly); - if (poly & 0xffff0000U){ + if (poly & 0xffff0000U) { fprintf(stderr, "polynomial is too large\en"); exit(1); } @@ -147,22 +146,22 @@ int main(int argc, char **argv) /* Create a table */ printf("static unsigned short crc_table[256] = {\n"); - for (n = 0; n < 256; n++){ + for (n = 0; n < 256; n++) { if (n % 8 == 0) printf("\t"); crc = n << 8; - for (i = 0; i < 8; i++){ - if(crc & 0x8000U) + for (i = 0; i < 8; i++) { + if (crc & 0x8000U) crc = (crc << 1) ^ poly; else crc <<= 1; - crc &= 0xFFFFU; + crc &= 0xFFFFU; } if (n == 255) printf("0x%04xU ", crc); else printf("0x%04xU, ", crc); - if(n % 8 == 7) + if (n % 8 == 7) printf("\n"); } printf("};\n"); |