From 789c8b22920dc4292c463e910ebac3393992bb3d Mon Sep 17 00:00:00 2001
From: tomangelo2 <tomangelo@wp.pl>
Date: Thu, 15 Sep 2022 01:14:29 +0200
Subject: [PATCH] Fix compilation with gcc

---
 src/CBot/CBotInstr/CBotExprLitNan.cpp |  4 +++-
 src/CBot/CBotInstr/CBotParExpr.cpp    |  4 +++-
 src/CBot/CBotInstr/CBotTwoOpExpr.cpp  |  1 +
 src/level/robotmain.cpp               |  3 ++-
 src/math/half.cpp                     |  2 +-
 src/script/scriptfunc.cpp             | 18 ++++++++++--------
 6 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/src/CBot/CBotInstr/CBotExprLitNan.cpp b/src/CBot/CBotInstr/CBotExprLitNan.cpp
index 60f73e8e..9ae23150 100644
--- a/src/CBot/CBotInstr/CBotExprLitNan.cpp
+++ b/src/CBot/CBotInstr/CBotExprLitNan.cpp
@@ -23,6 +23,8 @@
 
 #include "CBot/CBotVar/CBotVar.h"
 
+#include <cmath>
+
 namespace CBot
 {
 
@@ -43,7 +45,7 @@ bool CBotExprLitNan::Execute(CBotStack* &pj)
     if (pile->IfStep()) return false;
     CBotVar*    var = CBotVar::Create("", CBotTypFloat);
 
-    var->SetValFloat(std::nanf(""));
+    var->SetValFloat(nanf(""));
     pile->SetVar(var);          // put on the stack
     return pj->Return(pile);    // forward below
 }
diff --git a/src/CBot/CBotInstr/CBotParExpr.cpp b/src/CBot/CBotInstr/CBotParExpr.cpp
index fe33c82d..4986560b 100644
--- a/src/CBot/CBotInstr/CBotParExpr.cpp
+++ b/src/CBot/CBotInstr/CBotParExpr.cpp
@@ -38,6 +38,8 @@
 
 #include "CBot/CBotCStack.h"
 
+#include <cmath>
+
 namespace CBot
 {
 
@@ -218,7 +220,7 @@ CBotInstr* CBotParExpr::CompileLitExpr(CBotToken* &p, CBotCStack* pStack)
         CBotInstr* inst = new CBotExprLitNan();
         inst->SetToken(pp);
         CBotVar* var = CBotVar::Create("", CBotTypFloat);
-        var->SetValFloat(std::nanf(""));
+        var->SetValFloat(nanf(""));
         pStk->SetVar(var);
         return pStack->Return(inst, pStk);
     }
diff --git a/src/CBot/CBotInstr/CBotTwoOpExpr.cpp b/src/CBot/CBotInstr/CBotTwoOpExpr.cpp
index 52b78372..9072a48e 100644
--- a/src/CBot/CBotInstr/CBotTwoOpExpr.cpp
+++ b/src/CBot/CBotInstr/CBotTwoOpExpr.cpp
@@ -31,6 +31,7 @@
 #include "CBot/CBotVar/CBotVar.h"
 
 #include <cassert>
+#include <cmath>
 #include <algorithm>
 
 namespace CBot
diff --git a/src/level/robotmain.cpp b/src/level/robotmain.cpp
index 2c348e7a..e2ddc726 100644
--- a/src/level/robotmain.cpp
+++ b/src/level/robotmain.cpp
@@ -112,6 +112,7 @@
 #include <algorithm>
 #include <iomanip>
 #include <stdexcept>
+#include <cmath>
 #include <ctime>
 
 #include <boost/lexical_cast.hpp>
@@ -4155,7 +4156,7 @@ bool CRobotMain::FreeSpace(Math::Vector &center, float minRadius, float maxRadiu
         }
     }
 
-    float nan = std::nanf("");
+    float nan = nanf("");
 
     center = Math::Vector{ nan, nan, nan };
 
diff --git a/src/math/half.cpp b/src/math/half.cpp
index a205c736..be847c81 100644
--- a/src/math/half.cpp
+++ b/src/math/half.cpp
@@ -100,7 +100,7 @@ float HaltToFloat(uint16_t value)
     // NaN
     else if ((exponent == 31) && (mantissa != 0))
     {
-        result = std::nanf("");
+        result = nanf("");
     }
     // Normal number
     else
diff --git a/src/script/scriptfunc.cpp b/src/script/scriptfunc.cpp
index bd782618..e9cd4d40 100644
--- a/src/script/scriptfunc.cpp
+++ b/src/script/scriptfunc.cpp
@@ -67,6 +67,8 @@
 
 #include "ui/displaytext.h"
 
+#include <cmath>
+
 using namespace CBot;
 
 CBotTypResult CScriptFunctions::cClassNull(CBotVar* thisclass, CBotVar* &var)
@@ -2325,7 +2327,7 @@ bool CScriptFunctions::rReceive(CBotVar* var, CBotVar* result, int& exception, v
         if ( err != ERR_OK )
         {
             script->m_taskExecutor->StopForegroundTask();
-            result->SetValFloat(std::nanf(""));
+            result->SetValFloat(nanf(""));
             return true;
         }
 
@@ -2336,7 +2338,7 @@ bool CScriptFunctions::rReceive(CBotVar* var, CBotVar* result, int& exception, v
 
     if ( script->m_returnValue == boost::none )
     {
-        result->SetValFloat(std::nanf(""));
+        result->SetValFloat(nanf(""));
     }
     else
     {
@@ -3657,11 +3659,11 @@ void CScriptFunctions::uObject(CBotVar* botThis, void* user)
     if (IsObjectBeingTransported(object))
     {
         pSub = pVar->GetItemList();  // "x"
-        pSub->SetValFloat(std::nanf(""));
+        pSub->SetValFloat(nanf(""));
         pSub = pSub->GetNext();  // "y"
-        pSub->SetValFloat(std::nanf(""));
+        pSub->SetValFloat(nanf(""));
         pSub = pSub->GetNext();  // "z"
-        pSub->SetValFloat(std::nanf(""));
+        pSub->SetValFloat(nanf(""));
     }
     else
     {
@@ -3762,11 +3764,11 @@ void CScriptFunctions::uObject(CBotVar* botThis, void* user)
     if (IsObjectBeingTransported(object) || physics == nullptr)
     {
         pSub = pVar->GetItemList();  // "x"
-        pSub->SetValFloat(std::nanf(""));
+        pSub->SetValFloat(nanf(""));
         pSub = pSub->GetNext();  // "y"
-        pSub->SetValFloat(std::nanf(""));
+        pSub->SetValFloat(nanf(""));
         pSub = pSub->GetNext();  // "z"
-        pSub->SetValFloat(std::nanf(""));
+        pSub->SetValFloat(nanf(""));
     }
     else
     {