Module varint 

Variable-length integer encoding (Bitcoin protocol)

Bitcoin uses a variable-length integer encoding where:

• Values < 0xfd: encoded as single byte
• Values < 0xffff: encoded as 0xfd + 2 bytes (little-endian)
• Values < 0xffffffff: encoded as 0xfe + 4 bytes (little-endian)
• Values >= 0xffffffff: encoded as 0xff + 8 bytes (little-endian)

Constants

MAX_VARINT

Maximum value for a varint (2^64 - 1)

Functions

read_varint

Read a variable-length integer from bytes

varint_size

Get the encoded size of a varint without writing it

write_varint

Write a variable-length integer to bytes