Function extra_asserts::assert_approx_eq
[−]
[src]
pub fn assert_approx_eq<T>(l: T, r: T, epsilon: &T::Output) where
T: Sub + PartialOrd + Debug + Copy,
T::Output: Debug + PartialOrd,
Asserts if a floating point is within some epsilon. This allows you to compare calculations to make sure it's within some error factor of accuracy.
This one should pass
use extra_asserts::assert_approx_eq; let x : f64 = 10.123456789; let y : f64 = 10.123467890; assert_approx_eq(x, y, &1e-4);
This one should fail
use extra_asserts::assert_approx_eq; let x : f64 = 10.123456789; let y : f64 = 10.123467890; assert_approx_eq(x, y, &1e-10);