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float_to_decimal_opt

arrow_cast::cast

Function float_to_decimal_opt 

Source 
pub fn float_to_decimal_opt<D>(
    input: f64,
    precision: u8,
    scale: i8,
) -> Option<D::Native>
where
    D: DecimalType,
    D::Native: DecimalCast,
Expand description

Like float_to_decimal, but returns None on failure. With valid precision and scale, conversion failures do not allocate an error message.

use arrow_array::types::Decimal32Type;
use arrow_cast::cast::float_to_decimal_opt;

assert_eq!(float_to_decimal_opt::<Decimal32Type>(12.345, 5, 2), Some(1235));
assert_eq!(float_to_decimal_opt::<Decimal32Type>(12345.678, 5, 2), None);