kevacoin

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Commit Graph

Author	SHA1	Message	Date
Gavin Andresen	87b9931bed	Fix signed/unsigned comparison warnings	12 years ago
Pieter Wuille	4d6144f97f	Compact serialization for variable-length integers Variable-length integers: bytes are a MSB base-128 encoding of the number. The high bit in each byte signifies whether another digit follows. To make the encoding is one-to-one, one is subtracted from all but the last digit. Thus, the byte sequence a[] with length len, where all but the last byte has bit 128 set, encodes the number: (a[len-1] & 0x7F) + sum(i=1..len-1, 128^i((a[len-i-1] & 0x7F)+1)) Properties: Very small (0-127: 1 byte, 128-16511: 2 bytes, 16512-2113663: 3 bytes) * Every integer has exactly one encoding * Encoding does not depend on size of original integer type	12 years ago

Author

SHA1

Message

Date

Gavin Andresen

87b9931bed

Fix signed/unsigned comparison warnings

12 years ago

Pieter Wuille

4d6144f97f

Compact serialization for variable-length integers

Variable-length integers: bytes are a MSB base-128 encoding of the number.
The high bit in each byte signifies whether another digit follows. To make
the encoding is one-to-one, one is subtracted from all but the last digit.
Thus, the byte sequence a[] with length len, where all but the last byte
has bit 128 set, encodes the number:

  (a[len-1] & 0x7F) + sum(i=1..len-1, 128^i*((a[len-i-1] & 0x7F)+1))

Properties:
* Very small (0-127: 1 byte, 128-16511: 2 bytes, 16512-2113663: 3 bytes)
* Every integer has exactly one encoding
* Encoding does not depend on size of original integer type

12 years ago

2 Commits (ddd0e2f616be82fb57d68298be796c34268c6ae9)