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  1. /*
  2.  * Copyright (C) 2005 Jakub Vana
  3.  * Copyright (C) 2005 Jakub Jermar
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. #include <print.h>
  31. #include <debug.h>
  32. #include <panic.h>
  33.  
  34. #include <test.h>
  35. #include <atomic.h>
  36. #include <proc/thread.h>
  37.  
  38. #include <arch.h>
  39. #include <arch/arch.h>
  40.  
  41. #define THREADS     150*2
  42. #define ATTEMPTS    100
  43.  
  44. #define E_10e8  271828182
  45. #define PI_10e8 314159265
  46.  
  47.  
  48. #ifdef __ia32_ARCH_H__
  49. static inline double sqrt(double x) { double v; __asm__ ("fsqrt\n" : "=t" (v) : "0" (x)); return v; }
  50. #endif
  51.  
  52. #ifdef __amd64_ARCH_H__
  53. static inline double sqrt(double x) { double v; __asm__ ("fsqrt\n" : "=t" (v) : "0" (x)); return v; }
  54. #endif
  55.  
  56. #ifdef __ia64_ARCH_H__
  57. static inline long double sqrt(long double a)
  58. {  
  59.     long double x = 1;
  60.     long double lx = 0;
  61.  
  62.     if(a<0.00000000000000001) return 0;
  63.        
  64.     while(x!=lx)
  65.     {
  66.         lx=x;
  67.         x=(x+(a/x))/2;
  68.     }
  69.     return x;
  70. }
  71. #endif
  72.  
  73.  
  74.  
  75. static atomic_t threads_ok;
  76. static waitq_t can_start;
  77.  
  78. static void e(void *data)
  79. {
  80.     int i;
  81.     double e,d,le,f;
  82.  
  83.     waitq_sleep(&can_start);
  84.  
  85.     for (i = 0; i<ATTEMPTS; i++) {
  86.         le=-1;
  87.         e=0;
  88.         f=1;
  89.  
  90.         for(d=1;e!=le;d*=f,f+=1) {
  91.             le=e;
  92.             e=e+1/d;
  93.         }
  94.  
  95.         if((int)(100000000*e)!=E_10e8)
  96.             panic("tid%d: e*10e8=%d should be %d\n", THREAD->tid, (__native) (100000000*e),(__native) E_10e8);
  97.     }
  98.  
  99.     printf("tid%d: e*10e8=%d should be %d\n", THREAD->tid, (__native) (100000000*e),(__native) E_10e8);
  100.     atomic_inc(&threads_ok);
  101. }
  102.  
  103. static void pi(void *data)
  104. {
  105.  
  106. #ifdef __ia64_ARCH_H__
  107. #undef PI_10e8 
  108. #define PI_10e8 3141592
  109. #endif
  110.  
  111.     int i;
  112.     double lpi, pi;
  113.     double n, ab, ad;
  114.  
  115.     waitq_sleep(&can_start);
  116.  
  117.  
  118.     for (i = 0; i<ATTEMPTS; i++) {
  119.         lpi = -1;
  120.         pi = 0;
  121.  
  122.         for (n=2, ab = sqrt(2); lpi != pi; n *= 2, ab = ad) {
  123.             double sc, cd;
  124.  
  125.             sc = sqrt(1 - (ab*ab/4));
  126.             cd = 1 - sc;
  127.             ad = sqrt(ab*ab/4 + cd*cd);
  128.             lpi = pi;
  129.             pi = 2 * n * ad;
  130.         }
  131.  
  132. #ifdef __ia64_ARCH_H__
  133.         if((int)(1000000*pi)!=PI_10e8)
  134.             panic("tid%d: pi*10e8=%d should be %d\n", THREAD->tid, (__native) (1000000*pi),(__native) (PI_10e8/100));
  135. #else
  136.         if((int)(100000000*pi)!=PI_10e8)
  137.             panic("tid%d: pi*10e8=%d should be %d\n", THREAD->tid, (__native) (100000000*pi),(__native) PI_10e8);
  138. #endif
  139.  
  140.     }
  141.  
  142.     printf("tid%d: pi*10e8=%d should be %d\n", THREAD->tid, (__native) (100000000*pi),(__native) PI_10e8);
  143.     atomic_inc(&threads_ok);
  144. }
  145.  
  146. void test(void)
  147. {
  148.     thread_t *t;
  149.     int i;
  150.  
  151.     waitq_initialize(&can_start);
  152.  
  153.     printf("FPU test #1\n");
  154.     printf("Creating %d threads... ", THREADS);
  155.  
  156.     for (i=0; i<THREADS/2; i++) {  
  157.         if (!(t = thread_create(e, NULL, TASK, 0, "e")))
  158.             panic("could not create thread\n");
  159.         thread_ready(t);
  160.         if (!(t = thread_create(pi, NULL, TASK, 0, "pi")))
  161.             panic("could not create thread\n");
  162.         thread_ready(t);
  163.     }
  164.     printf("ok\n");
  165.    
  166.     thread_sleep(1);
  167.     waitq_wakeup(&can_start, WAKEUP_ALL);
  168.  
  169.     while (atomic_get(&threads_ok) != THREADS)
  170.         ;
  171.        
  172.     printf("Test passed.\n");
  173. }
  174.