Separate test function and main()

This allows for inclusion of the test function/file in a program with an
existing main().  This is an isolated piece of #19.

1 files changed, 5 insertions, 0 deletions

diff --git a/testmain.c b/testmain.c
new file mode 100644
index 0000000..bb9e024
--- /dev/null
+++ b/testmain.c
@@ -0,0 +1,5 @@
+int siphash_test();
+
+int main(void) {
+    return siphash_test();
+}