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00016 #include "FBlib.h"
00017 #include <stdio.h>
00018 #include <stdlib.h>
00019 #include <time.h>
00020
00021 #define MAX_SECS 30
00022 #define UPDATE_INTERVAL 5
00023
00024 int main()
00025 {
00026 int i;
00027 long elapsed_time;
00028
00029 FB_initlib("/dev/fb0");
00030 elapsed_time = time(NULL);
00031 for(i=255; i>=0; i--)
00032 FB_clear_screen(FB_makecol(i,0,0,0));
00033 elapsed_time = time(NULL) - elapsed_time;
00034 FB_exit();
00035 printf("The screen has been filled 256 times in %d seconds, it's %g clears/s\n", (int)elapsed_time, (double)256/elapsed_time);
00036 return 0;
00037 }