Function polars::export::arrow::compute::arithmetics::basic::saturating_sub

pub fn saturating_sub<T>(
    lhs: &PrimitiveArray<T>, 
    rhs: &PrimitiveArray<T>
) -> PrimitiveArray<T> where
    T: NativeArithmetics + SaturatingSub<Output = T>, 

This is supported on crate feature compute_arithmetics only.

Saturating subtraction of two primitive arrays. If the result from the sub is smaller than the possible number for this type, the result for the operation will be the saturated value.

Examples

use arrow2::compute::arithmetics::basic::saturating_sub;
use arrow2::array::Int8Array;

let a = Int8Array::from(&[Some(-100i8)]);
let b = Int8Array::from(&[Some(100i8)]);
let result = saturating_sub(&a, &b);
let expected = Int8Array::from(&[Some(-128)]);
assert_eq!(result, expected);