From c3b0e614ba638b850d0bb7e7d2d7f635da0ce142 Mon Sep 17 00:00:00 2001
From: Clemens Sageder <77528379+Sageder@users.noreply.github.com>
Date: Fri, 14 Jul 2023 14:54:26 +0200
Subject: [PATCH] [PromQL] Added missing trigonometric functions  (#3612)

---
 promql/PromQLLexer.g4        | 15 +++++++++++++++
 promql/examples/function.txt |  3 ++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/promql/PromQLLexer.g4 b/promql/PromQLLexer.g4
index 949c46e933..6affb25ac5 100644
--- a/promql/PromQLLexer.g4
+++ b/promql/PromQLLexer.g4
@@ -154,6 +154,21 @@ FUNCTION options { caseInsensitive=false; }
     | 'stddev_over_time'
     | 'stdvar_over_time'
     | 'last_over_time'
+    | 'acos'
+    | 'acosh'
+    | 'asin'
+    | 'asinh'
+    | 'atan'
+    | 'atanh'
+    | 'cos'
+    | 'cosh'
+    | 'sin'
+    | 'sinh'
+    | 'tan'
+    | 'tanh'
+    | 'deg'
+    | 'pi'
+    | 'rad'
     ;
 
 LEFT_BRACE:  '{';
diff --git a/promql/examples/function.txt b/promql/examples/function.txt
index 387e66e711..27b3f4ef8c 100644
--- a/promql/examples/function.txt
+++ b/promql/examples/function.txt
@@ -1 +1,2 @@
-day_of_month(timestamp(up{job="prometheus"}))
\ No newline at end of file
+day_of_month(timestamp(up{job="prometheus"}))
+sin(rate(http_requests_total[5m]))