Function half_to_even

pub fn half_to_even(value: f64, scale: i8) -> f64

Round half to nearest even number.

Round value to accuracy defined by scale rounding half to nearest even number. Positive scale defines the number of decimal digits in the result while negative scale rounds to a whole number and defines the number of trailing zeroes in the result.

Arguments

• value - value to round
• scale - result accuracy

Examples

use math::round;

let rounded = round::half_to_even(3.14159, 3);
assert_eq!(rounded, 3.142);

use math::round;

let rounded = round::half_to_even(3456., -2);
assert_eq!(rounded, 3400.);