From 051f0e40bdd3157902fd5e94f71f9747ad2fb72c Mon Sep 17 00:00:00 2001
From: Ivan Tham <pickfire@riseup.net>
Date: Sat, 3 Aug 2019 13:56:32 +0800
Subject: Add constants (e, pi)

---
 src/main.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
index 99d2059..c3f3342 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -192,6 +192,11 @@ mod tests {
         assert_eq!(90., evaled);
     }
     #[test]
+    fn sigmoid_fns() {
+        let evaled = eval_math_expression("1 / (1 + e^-7)", 0f64).unwrap();
+        assert_eq!(0.9990889488, evaled);
+    }
+    #[test]
     fn prev_ans() {
         let evaled = eval_math_expression("_ + 9", 9f64).unwrap();
         assert_eq!(18.0, evaled);
-- 
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