Rewrite code, but keeping the exact same semantic and behaviourHEADmain

- assert that the generated `siphash.o` code is identical to the
  original code, available at `tests/assert-identical.sh`;
- remove unneeded `#define`s;
- rewrite code with the correct indentation, spacing and formatting;
- use C99 constructs over C89 (for loop variable declarations inside
  the parentheses);
- fix the public API.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/lib.h b/src/lib.h
new file mode 100644
index 0000000..ae16870
--- /dev/null
+++ b/src/lib.h
@@ -0,0 +1,15 @@
+enum {
+	SIPHASH_KEY_LENGTH    = 16U,
+	SIPHASH_OUTPUT_LENGTH = 16U,
+};
+
+void
+siphash(
+	const u8                   key[SIPHASH_KEY_LENGTH],
+	const size_t               inlen,
+	const void *const restrict in,
+	u8                         out[SIPHASH_OUTPUT_LENGTH]
+);
+
+int
+siphash_main(int argc, char *argv[]);