Struct ScriptNum 

pub struct ScriptNum;

Bitcoin Script number utilities.

Provides conversion between stack byte arrays and BigNumber values, following Bitcoin’s sign-magnitude little-endian encoding.

Implementations

impl ScriptNum

pub fn from_bytes(bytes: &[u8], require_minimal: bool) -> Result<BigNumber>

Converts stack bytes to a BigNumber.

Arguments

• bytes - The stack element bytes
• require_minimal - If true, rejects non-minimally encoded numbers

Returns

The decoded BigNumber value, or an error if encoding is invalid

pub fn to_bytes(value: &BigNumber) -> Vec<u8>

Converts a BigNumber to stack bytes (minimal encoding).

Arguments

• value - The BigNumber to encode

Returns

The minimally-encoded byte array

pub fn is_minimally_encoded(bytes: &[u8]) -> bool

Checks if bytes are minimally encoded as a script number.

A number is minimally encoded if:

• It’s empty (zero), or
• The last byte is non-zero after removing the sign bit, or
• The second-to-last byte has its high bit set (justifying the extra byte)

pub fn cast_to_bool(bytes: &[u8]) -> bool

Casts a byte array to a boolean value.

Returns false for:

• Empty array
• Array of all zeros
• Negative zero [0x80] or [0x00, ..., 0x80]

Returns true otherwise.

pub fn minimally_encode(bytes: &[u8]) -> Vec<u8>

Minimally encodes bytes in-place.

Removes unnecessary trailing zeros while preserving the sign.