mod.rs

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//! "math" DataFusion functions

mod nans;
mod abs;

// create  UDFs
make_udf_function!(nans::IsNanFunc, ISNAN, isnan);
make_udf_function!(abs::AbsFunc, ABS, abs);

// Export the functions out of this package, both as expr_fn as well as a list of functions
export_functions!(
    (isnan, num, "returns true if a given number is +NaN or -NaN otherwise returns false"),
    (abs, num, "returns the absolute value of a given number")
);