Function arrow2::compute::arithmetics::decimal::mul

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

Available on crate feature compute_arithmetics only.

Multiply two decimal primitive arrays with the same precision and scale. If the precision and scale is different, then an InvalidArgumentError is returned. This function panics if the multiplied numbers result in a number larger than the possible number for the selected precision.

Examples

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

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

let result = mul(&a, &b);
let expected = PrimitiveArray::from([Some(1_00i128), Some(2_00i128), None, Some(4_00i128)]).to(DataType::Decimal(5, 2));

assert_eq!(result, expected);