From c8548d99117f5bf52e3cae38a30cb518e2d2bbfd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johanna=20S=C3=B6rng=C3=A5rd?= <jsorngard@gmail.com>
Date: Fri, 27 Dec 2024 13:03:14 +0100
Subject: [PATCH] Note the different inputs in the comment.

---
 src/dwm1c.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/dwm1c.rs b/src/dwm1c.rs
index 660f170..2eb532c 100644
--- a/src/dwm1c.rs
+++ b/src/dwm1c.rs
@@ -7,7 +7,8 @@ use crate::{
 // This is an implementation of the approximation of the secondary
 // branch of the Lambert W function
 // with 50 bits of accuracy from Fukushima's paper.
-// It returns f64::NAN if the input is negative, NAN, or larger than or equal to 0.
+// It returns f64::NAN if the `zc` input is negative,
+// or if the `z` input is NAN, or larger than or equal to 0.
 // It returns f64::INFINITY if the input is positive infinity.
 
 /// zc = z + 1/e