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Diffstat (limited to 'src')
| -rw-r--r-- | src/hash/crc32/crc32.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/hash/crc32/crc32.go b/src/hash/crc32/crc32.go index 6a6b9473be..4b13c12d32 100644 --- a/src/hash/crc32/crc32.go +++ b/src/hash/crc32/crc32.go @@ -5,6 +5,18 @@ // Package crc32 implements the 32-bit cyclic redundancy check, or CRC-32, // checksum. See http://en.wikipedia.org/wiki/Cyclic_redundancy_check for // information. +// +// Polynomials are represented in LSB-first form also known as reversed representation. +// +// LSB-first representation is a hexadecimal number with n bits, the most +// significant bit represents the coefficient of x^0 and the least significant +// bit represents the coefficient of x^(n-1). +// +// For example, x^5 + x^2 + x^0 is (binary:10100, hexadecimal:0x14) in 5-bit LSB-first form, +// as opposed to (binary:00101, hexadecimal:0x05) in MSB-first (normal) form. +// +// See http://en.wikipedia.org/wiki/Mathematics_of_cyclic_redundancy_checks#Reversed_representations_and_reciprocal_polynomials +// for information. package crc32 import ( |