xref: /openbmc/linux/include/linux/crc32poly.h (revision e37f2f93)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_CRC32_POLY_H
3 #define _LINUX_CRC32_POLY_H
4 
5 /*
6  * There are multiple 16-bit CRC polynomials in common use, but this is
7  * *the* standard CRC-32 polynomial, first popularized by Ethernet.
8  * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+x^0
9  */
10 #define CRC32_POLY_LE 0xedb88320
11 #define CRC32_POLY_BE 0x04c11db7
12 
13 /*
14  * This is the CRC32c polynomial, as outlined by Castagnoli.
15  * x^32+x^28+x^27+x^26+x^25+x^23+x^22+x^20+x^19+x^18+x^14+x^13+x^11+x^10+x^9+
16  * x^8+x^6+x^0
17  */
18 #define CRC32C_POLY_LE 0x82F63B78
19 
20 #endif /* _LINUX_CRC32_POLY_H */
21