xxhash

8.12

xxhash🔗ℹ

Bogdan Popa <bogdan@defn.io>

This package provides a pure-Racket implementation of xxHash32.

1 Reference🔗ℹ

(require file/xxhash32)

package: xxhash-lib

procedure
(xxhash32 bs [seed]) → (integer-in 0 4294967295)
bs : bytes?
seed : (integer-in 0 4294967295) = 0

Computes the XXH32 hash of bs with the given seed.

procedure
(xxh32? v) → boolean?
  v : any/c
procedure
(make-xxh32 [seed]) → xxh32?
  seed : (integer-in 0 4294967295) = 0
procedure
(xxh32-reset! h [seed]) → void?
  h : xxh32?
  seed : (integer-in 0 4294967295) = 0
procedure
(xxh32-update! h bs [start end]) → void?
  h : xxh32?
  bs : bytes?
  start : exact-nonnegative-integer? = 0
  end : exact-nonnegative-integer? = (bytes-length bs)
procedure
(xxh32-digest h) → (integer-in 0 4294967295)
  h : xxh32?

The make-xxh32 procedure returns a hashing context that can be used to compute an XXH32 digest using constant memory.

Examples:

> (require file/xxhash32)
> (define ctx (make-xxh32))
> (xxh32-update! ctx #"hello")
> (xxh32-update! ctx #" world!")
> (xxh32-digest ctx)
1171971541