Method precision

arrow-array/src/array/primitive_array.rs:1654–1698

Returns the decimal precision of this array

(&self)

    /// Returns the decimal precision of this array
    pub fn precision(&self) -> u8 {
        match T::BYTE_LENGTH {
            4 => {
                if let DataType::Decimal32(p, _) = self.data_type() {
                    *p
                } else {
                    unreachable!(
                        "Decimal32Array datatype is not DataType::Decimal32 but {}",
                        self.data_type()
                    )
                }
            }
            8 => {
                if let DataType::Decimal64(p, _) = self.data_type() {
                    *p
                } else {
                    unreachable!(
                        "Decimal64Array datatype is not DataType::Decimal64 but {}",
                        self.data_type()
                    )
                }
            }
            16 => {
                if let DataType::Decimal128(p, _) = self.data_type() {
                    *p
                } else {
                    unreachable!(
                        "Decimal128Array datatype is not DataType::Decimal128 but {}",
                        self.data_type()
                    )
                }
            }
            32 => {
                if let DataType::Decimal256(p, _) = self.data_type() {
                    *p
                } else {
                    unreachable!(
                        "Decimal256Array datatype is not DataType::Decimal256 but {}",
                        self.data_type()
                    )
                }
            }
            other => unreachable!("Unsupported byte length for decimal array {}", other),
        }
    }

    /// Returns the decimal scale of this array
    pub fn scale(&self) -> i8 {