1,5 → 1,6 |
/* |
* Copyright (C) 2005 Jakub Vana |
* Copyright (C) 2005 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
41,45 → 42,88 |
#include <arch/smp/atomic.h> |
#include <proc/thread.h> |
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#define THREADS 150*2 |
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#define E_10e8 271828182 |
#define PI_10e8 314159265 |
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static inline double sqrt(double x) { double v; __asm__ ("fsqrt\n" : "=t" (v) : "0" (x)); return v; } |
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static volatile int threads_ok; |
static waitq_t can_start; |
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static void e(void *data) |
{ |
int i; |
while(1) |
{ |
double e,d,le,f; |
le=-1; |
e=0; |
f=1; |
for(i=0,d=1;e!=le;d*=f,f+=1,i++) |
{ |
le=e; |
e=e+1/d; |
if (i>20000000) |
{ |
// printf("tid%d: e LOOPING\n", THREAD->tid); |
putchar('!'); |
i = 0; |
} |
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} |
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if((int)(100000000*e)==271828182) printf("tid%d: e OK\n", THREAD->tid); |
else panic("tid%d: e FAILED (100000000*e=%d)\n", THREAD->tid, (int) 100000000*e); |
double e,d,le,f; |
le=-1; |
e=0; |
f=1; |
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waitq_sleep(&can_start); |
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for(d=1;e!=le;d*=f,f+=1) { |
le=e; |
e=e+1/d; |
} |
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if((int)(100000000*e)==E_10e8) { |
atomic_inc((int *) &threads_ok); |
} |
else |
printf("tid%d: e*10e8=%d)\n", THREAD->tid, (int) 100000000*e); |
} |
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static void pi(void *data) |
{ |
double lpi = -1, pi = 0; |
double ab, ad; |
int n; |
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waitq_sleep(&can_start); |
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for (n=2, ab = sqrt(2); lpi != pi; n *= 2, ab = ad) { |
double sc, cd; |
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sc = sqrt(1 - (ab*ab/4)); |
cd = 1 - sc; |
ad = sqrt(ab*ab/4 + cd*cd); |
lpi = pi; |
pi = 2 * n * ad; |
} |
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if((int)(100000000*pi)==PI_10e8) { |
atomic_inc((int *) &threads_ok); |
} |
else |
printf("tid%d: pi*10e8=%d)\n", THREAD->tid, (int) 100000000*pi); |
} |
|
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void test(void) |
{ |
thread_t *t; |
int i; |
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for (i=0; i<4; i++) { |
t = thread_create(e, NULL, TASK, 0); |
waitq_initialize(&can_start); |
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printf("FPU test #1\n"); |
printf("Creating %d threads... ", THREADS); |
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for (i=0; i<THREADS/2; i++) { |
if (!(t = thread_create(e, NULL, TASK, 0))) |
panic("could not create thread\n"); |
thread_ready(t); |
if (!(t = thread_create(pi, NULL, TASK, 0))) |
panic("could not create thread\n"); |
thread_ready(t); |
} |
printf("ok\n"); |
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while(1); |
thread_sleep(1); |
waitq_wakeup(&can_start, WAKEUP_ALL); |
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while (threads_ok != THREADS) |
; |
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printf("Test passed.\n"); |
} |