Squashed 'livekit-server/' content from commit 154b4d26

git-subtree-dir: livekit-server
git-subtree-split: 154b4d26b769c68a03c096124094b97bf61a996f

pkg/utils/math.go

@@ -0,0 +1,36 @@
+// Copyright 2023 LiveKit, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package utils
+
+import "sort"
+
+// MedianFloat32 gets median value for an array of float32
+func MedianFloat32(input []float32) float32 {
+	num := len(input)
+	if num == 0 {
+		return 0
+	} else if num == 1 {
+		return input[0]
+	}
+	sort.Slice(input, func(i, j int) bool {
+		return input[i] < input[j]
+	})
+	if num%2 != 0 {
+		return input[num/2]
+	}
+	left := input[num/2-1]
+	right := input[num/2]
+	return (left + right) / 2
+}