From 67e94dc1ded99b6d53637fa56e76e03731088e58 Mon Sep 17 00:00:00 2001
From: AlexeyAB <alexeyab84@gmail.com>
Date: Sun, 8 Dec 2019 01:03:56 +0300
Subject: [PATCH] Minor fix

---
 src/utils.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/utils.h b/src/utils.h
index 9fa05fa7..421a313d 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -6,6 +6,10 @@
 #include <stdio.h>
 #include <time.h>
 
+#ifndef M_PI
+#define M_PI       3.14159265358979323846   // pi
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif