/*
* Copyright (C) 2005 Jakub Vana
* Copyright (C) 2005 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <print.h>
#include <debug.h>
#include <panic.h>
#include <test.h>
#include <arch/atomic.h>
#include <proc/thread.h>
#include <arch.h>
#include <arch/arch.h>
#define THREADS 150*2
#define ATTEMPTS 100
#define E_10e8 271828182
#define PI_10e8 314159265
#ifdef __ia32_ARCH_H__
static inline double sqrt(double x
) { double v
; __asm__
("fsqrt\n" : "=t" (v
) : "0" (x
)); return v
; } #endif
#ifdef __amd64_ARCH_H__
static inline double sqrt(double x
) { double v
; __asm__
("fsqrt\n" : "=t" (v
) : "0" (x
)); return v
; } #endif
#ifdef __ia64_ARCH_H__
static inline long double sqrt(long double a
) {
long double x = 1;
long double lx = 0;
if(a<0.00000000000000001) return 0;
while(x!=lx)
{
lx=x;
x=(x+(a/x))/2;
}
return x;
}
#endif
static atomic_t threads_ok;
static waitq_t can_start;
static void e(void *data)
{
int i;
double e,d,le,f;
waitq_sleep(&can_start);
for (i = 0; i<ATTEMPTS; i++) {
le=-1;
e=0;
f=1;
for(d=1;e!=le;d*=f,f+=1) {
le=e;
e=e+1/d;
}
if((int)(100000000*e)!=E_10e8)
panic("tid%d: e*10e8=%d should be %d\n", THREAD->tid, (__native) (100000000*e),(__native) E_10e8);
}
printf("tid%d: e*10e8=%d should be %d\n", THREAD
->tid
, (__native
) (100000000*e
),(__native
) E_10e8
); atomic_inc(&threads_ok);
}
static void pi(void *data)
{
#ifdef __ia64_ARCH_H__
#undef PI_10e8
#define PI_10e8 3141592
#endif
int i;
double lpi, pi;
double n, ab, ad;
waitq_sleep(&can_start);
for (i = 0; i<ATTEMPTS; i++) {
lpi = -1;
pi = 0;
for (n
=2, ab
= sqrt(2); lpi
!= pi
; n
*= 2, ab
= ad
) { double sc, cd;
sc
= sqrt(1 - (ab
*ab
/4)); cd = 1 - sc;
ad
= sqrt(ab
*ab
/4 + cd
*cd
); lpi = pi;
pi = 2 * n * ad;
}
#ifdef __ia64_ARCH_H__
if((int)(1000000*pi)!=PI_10e8)
panic("tid%d: pi*10e8=%d should be %d\n", THREAD->tid, (__native) (1000000*pi),(__native) (PI_10e8/100));
#else
if((int)(100000000*pi)!=PI_10e8)
panic("tid%d: pi*10e8=%d should be %d\n", THREAD->tid, (__native) (100000000*pi),(__native) PI_10e8);
#endif
}
printf("tid%d: pi*10e8=%d should be %d\n", THREAD
->tid
, (__native
) (100000000*pi
),(__native
) PI_10e8
); atomic_inc(&threads_ok);
}
void test(void)
{
thread_t *t;
int i;
waitq_initialize(&can_start);
printf("Creating %d threads... ", THREADS
);
for (i=0; i<THREADS/2; i++) {
if (!(t = thread_create(e, NULL, TASK, 0, "e")))
panic("could not create thread\n");
thread_ready(t);
if (!(t = thread_create(pi, NULL, TASK, 0, "pi")))
panic("could not create thread\n");
thread_ready(t);
}
thread_sleep(1);
waitq_wakeup(&can_start, WAKEUP_ALL);
while (atomic_get(&threads_ok) != THREADS)
;
}