Hi. Along the lines of the previously submitted string conversion patch, here is some other possible interoperability thing. Index: src/org/armedbear/lisp/SingleFloat.java =================================================================== --- src/org/armedbear/lisp/SingleFloat.java (revision 12758) +++ src/org/armedbear/lisp/SingleFloat.java (working copy) @@ -635,6 +635,11 @@ return new SingleFloat(((Bignum)obj).floatValue()); if (obj instanceof Ratio) return new SingleFloat(((Ratio)obj).floatValue()); + if (obj instanceof JavaObject) { + final Object jobj = ((JavaObject)obj).getObject(); + if (jobj instanceof Number) + return new SingleFloat(((Number)jobj).floatValue()); + } error(new TypeError("The value " + obj.writeToString() + " cannot be converted to type SINGLE-FLOAT.")); // Not reached. Index: src/org/armedbear/lisp/DoubleFloat.java =================================================================== --- src/org/armedbear/lisp/DoubleFloat.java (revision 12758) +++ src/org/armedbear/lisp/DoubleFloat.java (working copy) @@ -646,6 +646,11 @@ return new DoubleFloat(((SingleFloat)obj).value); if (obj instanceof Ratio) return new DoubleFloat(((Ratio)obj).doubleValue()); + if (obj instanceof JavaObject) { + final Object jobj = ((JavaObject)obj).getObject(); + if (jobj instanceof Number) + return new DoubleFloat(((Number)jobj).doubleValue()); + } error(new TypeError("The value " + obj.writeToString() + " cannot be converted to type DOUBLE-FLOAT.")); // Not reached. P.S.: The following conditional is duplicated and could be removed: Index: src/org/armedbear/lisp/Pathname.java =================================================================== --- src/org/armedbear/lisp/Pathname.java (revision 12758) +++ src/org/armedbear/lisp/Pathname.java (working copy) @@ -1290,7 +1290,7 @@ if (host == NIL) { host = defaults.host; } - if (directory == NIL && defaults != null) { + if (directory == NIL) { directory = defaults.directory; } if (!deviceSupplied) { -- CYa, ⡍⠁⠗⠊⠕