apply patch to timer.c from open PR to git.efi.th-nuernberg.de/gitea/freudenreichan/info2Praktikum-DobleSpiel which fixes timers on linux

I2_Dobble/numbers.c

@@ -16,7 +16,9 @@ static void dublicateRandomEntry (unsigned int *numbers, unsigned int len)
    if (numbers && len > 2)
    {
         unsigned int dubIndx = rand() % (len - 1);
-        unsigned int copyIndx = rand() % len;
+        unsigned int copyIndx;
+        
+        copyIndx = rand() % len;
 
         numbers[len - 1] = numbers[dubIndx];
 
@@ -67,7 +69,7 @@ unsigned int *createNumbers(unsigned int len)
     // Duplicate one random entry
     dublicateRandomEntry(numbers, len);
 
-    clearTree(root);
+    clearTree(root); //Notwendigkeit muss noch restlichem Code entnommen werden
     return numbers;
 }
 

I2_Dobble/timer.c

@@ -1,6 +1,12 @@
 #include "timer.h"
 
-#if __APPLE__
+#ifdef __linux__
+// Defines strict posix compliance for CLOCK_MONOTONIC
+#define _POSIX_C_SOURCE 199309L
+#include <time.h>
+#endif
+
+#if __APPLE__ || __linux__
 #include <sys/time.h>
 static struct timespec start = {0, 0};
 
@@ -21,7 +27,8 @@ double stopTimer()
 
     double measuredSeconds = (double)delta_us / 1000000.;
 
-    if(start.tv_nsec > 0) {
+    if (start.tv_nsec > 0)
+    {
         start.tv_nsec = 0;
         start.tv_sec = 0;
     }
@@ -45,7 +52,7 @@ double stopTimer()
 {
     double measuredSeconds = (clock() - (double)startClocks) / CLOCKS_PER_SEC;
 
-    if(startClocks > 0)
+    if (startClocks > 0)
         startClocks = 0;
     else
         measuredSeconds = -1;