Test border values

JSorngard · Jul 28, 2024 · 7a2b2f7 · 7a2b2f7
1 parent 19d5afa
commit 7a2b2f7
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -78,10 +78,12 @@ mod tets {
  #[cfg(feature = "24")]
  use super::fast::{lambert_w_0 as lambert_w_0_24, lambert_w_m1 as lambert_w_m1_24};
  use approx::assert_abs_diff_eq;
+ use core::f64::consts::E;
 
  #[cfg(feature = "50")]
  #[test]
  fn test_lambert_w_0_50() {
+ assert_eq!(lambert_w_0_50(-1.0 / E - f64::EPSILON), None);
  assert_abs_diff_eq!(
  lambert_w_0_50(-2.678794411714424e-01).unwrap(),
  -3.993824525397807e-01
@@ -204,6 +206,7 @@ mod tets {
  #[cfg(feature = "24")]
  #[test]
  fn test_lambert_w_0_24() {
+ assert_eq!(lambert_w_0_24(-1.0 / E - f64::EPSILON), None);
  assert_abs_diff_eq!(
  lambert_w_0_24(-2.678794411714424e-01).unwrap(),
  -3.993824525397807e-01,
@@ -339,6 +342,7 @@ mod tets {
  #[cfg(feature = "50")]
  #[test]
  fn test_lambert_w_m1_50() {
+ assert_eq!(lambert_w_m1_50(-1.0 / E - f64::EPSILON), None);
  assert_abs_diff_eq!(
  lambert_w_m1_50(-3.578794411714423e-01).unwrap(),
  -1.253493791367214,
@@ -401,11 +405,13 @@ mod tets {
  lambert_w_m1_50(-1.000000000000008e-145).unwrap(),
  -3.397029099254290e+02
  );
+ assert_eq!(lambert_w_m1_50(f64::EPSILON), None);
  }
 
  #[cfg(feature = "24")]
  #[test]
  fn test_lambert_w_m1_24() {
+ assert_eq!(lambert_w_m1_50(-1.0 / E - f64::EPSILON), None);
  assert_abs_diff_eq!(
  lambert_w_m1_24(-3.578794411714423e-01).unwrap(),
  -1.253493791367214,
@@ -471,5 +477,6 @@ mod tets {
  -3.397029099254290e+02,
  epsilon = 1e-4
  );
+ assert_eq!(lambert_w_m1_24(f64::EPSILON), None);
  }
 }