Function single_decimal_to_float_lossy 

pub fn single_decimal_to_float_lossy<D, F>(
    f: &F,
    x: <D as ArrowPrimitiveType>::Native,
    scale: i32,
) -> f64
where
    D: DecimalType,
    F: Fn(<D as ArrowPrimitiveType>::Native) -> f64,

Lossy conversion from decimal to float.

Returns the f64 nearest to the decimal’s exact value, rounding once, for any scale that fits in an i8 – as every Arrow decimal’s does.

Conversion is lossy and follows standard floating point semantics. Values that exceed the representable range become INFINITY or -INFINITY without returning an error.