How to use BigDecimal for math calculations?

[shahamit]

We want to use this library for financial calculations and specifically use BigDecimal parameters to have accurate decimal calculations. I could not find Decls.BigDecimal type hence starting this discussion.

How can I execute calculations on BigDecimal's?

Thanks.

[snazy]

CEL-Java, as all CEL implementations, are tied to the data types defined in the CEL spec.

[shahamit]

Ok. That would mean that this library cannot be used for float point calculations (financial calculations) right? Am I missing something?

for e.g. the below code gives incorrect output as 0.19999999999999998

Script script = scriptHost.buildScript("x - y")
                .withDeclarations(
                        Decls.newVar("x", Decls.Double),
                        Decls.newVar("y", Decls.Double))
                .build();

        Map<String, Object> arguments = new HashMap<>();
        arguments.put("x", 0.3d);
        arguments.put("y", 0.1d);

        Double result = script.execute(Double.class, arguments);