From 816c94049aa09fc82390e2b49992f303a9a93461 Mon Sep 17 00:00:00 2001
From: Tomasz Golinski <tomaszg@math.uwb.edu.pl>
Date: Mon, 25 Sep 2023 18:35:05 +0200
Subject: [PATCH] Add some constexpr to some functions

---
 common.cpp | 7 +------
 common.h   | 9 ++++-----
 2 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/common.cpp b/common.cpp
index 4dd1bb5..8a02013 100644
--- a/common.cpp
+++ b/common.cpp
@@ -5,11 +5,6 @@
 #include <algorithm>
 #include <numeric>
 #include <iterator>
-#include <cmath>
-
-float degtorad(float x) {
-	return x * M_PI / 180;
-}
 
 void htmlencode(std::string& data) {
 	std::string tmp;
@@ -41,7 +36,7 @@ void htmlencode(std::string& data) {
 	data.swap(tmp);
 }
 
-static std::string string_mangle(const std::string& str) {
+constexpr static std::string string_mangle(const std::string& str) {
 	std::string tmp;
 	tmp.reserve(str.size());
 
diff --git a/common.h b/common.h
index 3088d02..cf6e3f5 100644
--- a/common.h
+++ b/common.h
@@ -1,13 +1,11 @@
 #pragma once
 
-// #include "cache.h"
-// #include "powertrail.h"
-
 #include <functional>
 #include <string>
 #include <map>
 #include <vector>
 #include <ctime>
+#include <cmath>
 
 class Cache;
 
@@ -68,7 +66,8 @@ public:
 	explicit Position(std::string loc);
 };
 
-
 float cache_distance(const Cache& a, const Cache& b);
 
-float degtorad(float x);
+constexpr float degtorad(float x) {
+	return x * M_PI / 180;
+}