apps/testapp/fputests.cpp

   1 /*
   2 ** Copyright 2004, Travis Geiselbrecht. All rights reserved.
   3 ** Distributed under the terms of the NewOS License.
   4 */
   5 #include <string.h>
   6 #include <stdio.h>
   7 #include <unistd.h>
   8 #include <sys/syscalls.h>
   9
  10 static int fpu_test_thread(void *arg)
  11 {
  12         thread_id tid = _kern_get_current_thread_id();
  13         double foo = tid;
  14         double bar;
  15
  16         printf("starting thread %d\n", tid);
  17
  18         for(;;) {
  19                 bar = foo * 1.47;
  20                 foo = bar / 1.47;
  21                 if(foo != (double)tid)
  22                         printf("error: foo %f, should be %f\n", foo, (double)tid);
  23         }
  24
  25         return 0;
  26 }
  27
  28 int fpu_test(int arg)
  29 {
  30         int i;
  31
  32         for(i=0; i<5; i++) {
  33                 thread_id tid = _kern_thread_create_thread("fpu tester", &fpu_test_thread, 0);
  34                 _kern_thread_set_priority(tid, 1);
  35                 _kern_thread_resume_thread(tid);
  36         }
  37
  38         printf("finished creating threads, waiting forever\n");
  39         for(;;)
  40                 usleep(1000000);
  41
  42         return 0;
  43 }
  44