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rust-bitcoin-unsafe-fast
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Add a max scriptnum constant 

Integers within Script can have a maximum value of 2^31 (i.e., they are
signed) but we (miniscript) often uses unsigned ints, to facilitate
checking the unsigned type is the correct size to fit in a signed int
add a const `MAX_SCRIPTNUM_VALUE`.
This commit is contained in:
Tobin C. Harding 2022-07-11 09:42:55 +10:00
parent 7a346970d0
commit 1390ee12ec
1 changed files with 2 additions and 0 deletions
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src/blockdata/constants.rs
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@ -53,6 +53,8 @@ pub const SCRIPT_ADDRESS_PREFIX_TEST: u8 = 196; // 0xc4
pub const MAX_SCRIPT_ELEMENT_SIZE: usize = 520; pub const MAX_SCRIPT_ELEMENT_SIZE: usize = 520;
/// How may blocks between halvings. /// How may blocks between halvings.
pub const SUBSIDY_HALVING_INTERVAL: u32 = 210_000; pub const SUBSIDY_HALVING_INTERVAL: u32 = 210_000;
/// Maximum allowed value for an integer in Script.
pub const MAX_SCRIPTNUM_VALUE: u32 = 0x80000000; // 2^31
/// In Bitcoind this is insanely described as ~((u256)0 >> 32) /// In Bitcoind this is insanely described as ~((u256)0 >> 32)
pub fn max_target(_: Network) -> Uint256 { pub fn max_target(_: Network) -> Uint256 {