tests/pass/float.rs

@@ -31,7 +31,7 @@ macro_rules! assert_approx_eq {
         // Approximate the ULP by taking half the distance between the number one place "up"
         // and the number one place "down".
         let ulp = (expected.next_up() - expected.next_down()) / 2.0;
-        let ulp_diff = ((actual - expected) / ulp).round() as i32;
+        let ulp_diff = ((actual - expected) / ulp).round().abs() as i32;
         if ulp_diff > allowed_ulp_diff {
             panic!("{actual:?} is not approximately equal to {expected:?}\ndifference in ULP: {ulp_diff} > {allowed_ulp_diff}");
         };