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utils: add max_unsigned/min_unsigned helpers.

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We are usually dealing with unsigned values, so use this.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2021-10-13 14:12:42 +10:30
committed by Christian Decker
parent 012dedc3d8
commit 2ab4e5b42b
3 changed files with 26 additions and 5 deletions
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4
bitcoin/script.c
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@@ -12,8 +12,6 @@
/* To push 0-75 bytes onto stack. */
#define OP_PUSHBYTES(val) (val)
#define max(a, b) ((a) > (b) ? (a) : (b))
/* Bitcoin's OP_HASH160 is RIPEMD(SHA256()) */
static void hash160(struct ripemd160 *redeemhash, const void *mem, size_t len)
{
@@ -556,7 +554,7 @@ u8 *bitcoin_wscript_to_local(const tal_t *ctx, u16 to_self_delay,
add_op(&script, OP_IF);
add_push_key(&script, revocation_pubkey);
add_op(&script, OP_ELSE);
add_number(&script, max(lease_remaining, to_self_delay));
add_number(&script, max_unsigned(lease_remaining, to_self_delay));
add_op(&script, OP_CHECKSEQUENCEVERIFY);
add_op(&script, OP_DROP);
add_push_key(&script, local_delayedkey);