Merge pull request #2786 from Skgland/ffi-f64-tests

add ffi tests & fix ffi

tests/scryer/main.rs

@@ -2,6 +2,8 @@ mod helper;
 mod issues;
 mod src_tests;
 
+mod ffi;
+
 /// To add new cli test copy an existing .toml file in `tests/scryer/cli/issues/` or `tests/scryer/cli/issues/src_tests/`,
 /// adjust as necessary the `-f` and `--no-add-history` args should be kept but additional args may be added.
 /// For input on stdin add a .stdin file with the same filename.