Function polars::export::arrow::compute::arithmetics::decimal::saturating_mul

pub fn saturating_mul(
    lhs: &PrimitiveArray<i128>, 
    rhs: &PrimitiveArray<i128>
) -> PrimitiveArray<i128>

This is supported on crate feature compute_arithmetics only.

Saturated multiplication of two decimal primitive arrays with the same precision and scale. If the precision and scale is different, then an InvalidArgumentError is returned. If the result from the multiplication is larger than the possible number with the selected precision then the resulted number in the arrow array is the maximum number for the selected precision.

Examples

use arrow2::compute::arithmetics::decimal::saturating_mul;
use arrow2::array::PrimitiveArray;
use arrow2::datatypes::DataType;

let a = PrimitiveArray::from([Some(999_99i128), Some(1_00i128), None, Some(2_00i128)]).to(DataType::Decimal(5, 2));
let b = PrimitiveArray::from([Some(10_00i128), Some(2_00i128), None, Some(2_00i128)]).to(DataType::Decimal(5, 2));

let result = saturating_mul(&a, &b);
let expected = PrimitiveArray::from([Some(999_99i128), Some(2_00i128), None, Some(4_00i128)]).to(DataType::Decimal(5, 2));

assert_eq!(result, expected);