Function float128 

pub fn float128<V: Source>(
    value: &V,
    path: &str,
) -> Result<Float128, ProbeError>

A long double.

The spelling is the representation’s rule and is stated by Source::as_float128; this is where the type asks for one, so that a caller does not reach past the contract to get it.

Errors

ProbeError::Mismatch for a value the representation cannot read as a long double.