From b4f129835a49eeb3dd09142ea055c44a479e3421 Mon Sep 17 00:00:00 2001
From: PaddiM8 <paddim8@pm.me>
Date: Tue, 9 Jun 2020 20:50:05 +0200
Subject: [PATCH] Added gamma function.

---
 kalk/src/prelude.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kalk/src/prelude.rs b/kalk/src/prelude.rs
index 977452c..2b6d8a6 100644
--- a/kalk/src/prelude.rs
+++ b/kalk/src/prelude.rs
@@ -46,6 +46,8 @@ pub const UNARY_FUNCS: phf::Map<&'static str, UnaryFuncInfo> = phf::phf_map! {
     "exp" => UnaryFuncInfo(exp, Other),
     "floor" => UnaryFuncInfo(floor, Other),
     "frac" => UnaryFuncInfo(frac, Other),
+    "gamma" => UnaryFuncInfo(gamma, Other),
+    "Γ" => UnaryFuncInfo(gamma, Other),
     "log" => UnaryFuncInfo(log, Other),
     "ln" => UnaryFuncInfo(ln, Other),
     "round" => UnaryFuncInfo(round, Other),
@@ -243,6 +245,10 @@ mod funcs {
         x.fract()
     }
 
+    pub fn gamma(x: Float) -> Float {
+        x.gamma()
+    }
+
     pub fn hyp(x: Float, y: Float) -> Float {
         x.hypot(&y)
     }