added main file.

randombyte128.c

@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <sys/time.h>
+#include <stdbool.h>
+
+long long millis(){
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  long long millisecs = (long long)tv.tv_sec * 1000 + tv.tv_usec / 1000;
+  return millisecs;
+}
+bool flip(){
+  bool n = false;
+  long long then = millis() +1;
+  while (millis() <= then){
+    n=!n;
+  }
+  return n;
+}
+bool get_fair_bit(){
+  while (true) {
+    bool a = flip();
+    if (a != flip()){
+      return a;
+    }
+  }
+}
+char get_random_byte(){
+  char n = 0;
+  for (int i = 0; i < 8; ++i){
+    n <<=1;
+    n|= get_fair_bit();
+  }
+  return n;
+}
+int main(){
+  for (int i = 0; i < 128; ++i){
+    printf("%hd\n", get_random_byte());
+  }
+}