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bitcoin: hash_scid and hash_scidd public functions.

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We reimplemented this redundantly: hash_scid was called
short_channel_id_hash, so I obviously missed it.

Rename, and implement hash_scidd helper too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2026-02-16 17:25:33 +10:30
parent 9bcac63414
commit d9774e73dc
11 changed files with 20 additions and 54 deletions
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8
bitcoin/short_channel_id.h
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@@ -17,7 +17,7 @@ static inline bool short_channel_id_eq(struct short_channel_id a,
return a.u64 == b.u64;
}
static inline size_t short_channel_id_hash(struct short_channel_id scid)
static inline size_t hash_scid(struct short_channel_id scid)
{
/* scids cost money to generate, so simple hash works here */
return (scid.u64 >> 32) ^ (scid.u64 >> 16) ^ scid.u64;
@@ -46,6 +46,12 @@ static inline bool short_channel_id_dir_eq(const struct short_channel_id_dir *a,
return short_channel_id_eq(a->scid, b->scid) && a->dir == b->dir;
}
static inline size_t hash_scidd(const struct short_channel_id_dir *scidd)
{
/* Bottom bit is common, so use bit 4 for direction */
return hash_scid(scidd->scid) | (scidd->dir << 4);
}
static inline u32 short_channel_id_blocknum(struct short_channel_id scid)
{
return scid.u64 >> 40;