Skip to main content

get_numeric_upcast_supertype_lossless

polars_core::utils

Function get_numeric_upcast_supertype_lossless 

Source 
pub fn get_numeric_upcast_supertype_lossless(
    l: &DataType,
    r: &DataType,
) -> Option<DataType>
Expand description

Returns the smallest numeric dtype that l and r can both be casted to without loss of data. If no such dtype exists, or l and r are already matching, returns None.