From d8020d88038c0d017ddf55ae0af4f490772eab75 Mon Sep 17 00:00:00 2001
From: JailDoctor <jaildoctor@gmail.com>
Date: Tue, 7 Dec 2021 17:02:44 +0100
Subject: [PATCH] Add 'sgn'

---
 sgn.md | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 sgn.md

diff --git a/sgn.md b/sgn.md
new file mode 100644
index 0000000..823c881
--- /dev/null
+++ b/sgn.md
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+# sgn(x)
+Ens torna `1` si `x >= 0` i `-1` si `x < 0`.
+
+### Paràmetres
+
+`x`
+El nombre sobre el que aplicar l'operació. 
+
+### Exemple
+```
+function init()
+    local x = {0, 4.1, 10.5, 0.8, -4.3}
+    cls()
+    for i=1,#x do
+        print("signe de "..x[i].." = "..sgn(x[i]), 0, i-1)
+    end
+end
+```
+### Vore també
+* [abs(x)](abs)
+* [ceil(x)](ceil)
+* [flr(x)](flr)
+* [sin(x)](sin)
+* [cos(x)](cos)
+* [atan2(x,y)](atan2)
+* [sqrt(x)](sqrt)
+* [max(x,y)](max)
+* [mid(x,y,z)](mid)
+* [min(x,y)](min)