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Line 41... | Line 41... | ||
41 | #include <arch.h> |
41 | #include <arch.h> |
42 | #include <arch/smp/atomic.h> |
42 | #include <arch/smp/atomic.h> |
43 | #include <proc/thread.h> |
43 | #include <proc/thread.h> |
44 | 44 | ||
45 | #define THREADS 150*2 |
45 | #define THREADS 150*2 |
- | 46 | #define ATTEMPTS 10 |
|
46 | 47 | ||
47 | #define E_10e8 271828182 |
48 | #define E_10e8 271828182 |
48 | #define PI_10e8 314159265 |
49 | #define PI_10e8 314159265 |
49 | 50 | ||
50 | static inline double sqrt(double x) { double v; __asm__ ("fsqrt\n" : "=t" (v) : "0" (x)); return v; } |
51 | static inline double sqrt(double x) { double v; __asm__ ("fsqrt\n" : "=t" (v) : "0" (x)); return v; } |
Line 52... | Line 53... | ||
52 | static volatile int threads_ok; |
53 | static volatile int threads_ok; |
53 | static waitq_t can_start; |
54 | static waitq_t can_start; |
54 | 55 | ||
55 | static void e(void *data) |
56 | static void e(void *data) |
56 | { |
57 | { |
- | 58 | int i; |
|
57 | double e,d,le,f; |
59 | double e,d,le,f; |
58 | le=-1; |
- | |
59 | e=0; |
- | |
60 | f=1; |
- | |
61 | 60 | ||
62 | waitq_sleep(&can_start); |
61 | waitq_sleep(&can_start); |
63 | 62 | ||
- | 63 | for (i = 0; i<ATTEMPTS; i++) { |
|
- | 64 | le=-1; |
|
- | 65 | e=0; |
|
- | 66 | f=1; |
|
- | 67 | ||
64 | for(d=1;e!=le;d*=f,f+=1) { |
68 | for(d=1;e!=le;d*=f,f+=1) { |
65 | le=e; |
69 | le=e; |
66 | e=e+1/d; |
70 | e=e+1/d; |
67 | } |
71 | } |
68 | 72 | ||
69 | if((int)(100000000*e)==E_10e8) { |
73 | if((int)(100000000*e)!=E_10e8) |
70 | atomic_inc((int *) &threads_ok); |
74 | panic("tid%d: e*10e8=%d\n", THREAD->tid, (int) 100000000*e); |
71 | } |
75 | } |
72 | else |
76 | |
73 | printf("tid%d: e*10e8=%d)\n", THREAD->tid, (int) 100000000*e); |
77 | atomic_inc((int *) &threads_ok); |
74 | } |
78 | } |
75 | 79 | ||
76 | static void pi(void *data) |
80 | static void pi(void *data) |
77 | { |
81 | { |
- | 82 | int i; |
|
78 | double lpi = -1, pi = 0; |
83 | double lpi, pi; |
79 | double ab, ad; |
84 | double n, ab, ad; |
80 | int n; |
- | |
81 | 85 | ||
82 | waitq_sleep(&can_start); |
86 | waitq_sleep(&can_start); |
83 | 87 | ||
84 | for (n=2, ab = sqrt(2); lpi != pi; n *= 2, ab = ad) { |
- | |
85 | double sc, cd; |
- | |
86 | 88 | ||
- | 89 | for (i = 0; i<ATTEMPTS; i++) { |
|
- | 90 | lpi = -1; |
|
- | 91 | pi = 0; |
|
- | 92 | ||
- | 93 | for (n=2, ab = sqrt(2); lpi != pi; n *= 2, ab = ad) { |
|
- | 94 | double sc, cd; |
|
- | 95 | ||
87 | sc = sqrt(1 - (ab*ab/4)); |
96 | sc = sqrt(1 - (ab*ab/4)); |
88 | cd = 1 - sc; |
97 | cd = 1 - sc; |
89 | ad = sqrt(ab*ab/4 + cd*cd); |
98 | ad = sqrt(ab*ab/4 + cd*cd); |
90 | lpi = pi; |
99 | lpi = pi; |
91 | pi = 2 * n * ad; |
100 | pi = 2 * n * ad; |
92 | } |
101 | } |
93 | 102 | ||
94 | if((int)(100000000*pi)==PI_10e8) { |
103 | if((int)(100000000*pi)!=PI_10e8) |
95 | atomic_inc((int *) &threads_ok); |
104 | panic("tid%d: pi*10e8=%d\n", THREAD->tid, (int) 100000000*pi); |
96 | } |
105 | } |
97 | else |
106 | |
98 | printf("tid%d: pi*10e8=%d)\n", THREAD->tid, (int) 100000000*pi); |
107 | atomic_inc((int *) &threads_ok); |
99 | } |
108 | } |
100 | 109 | ||
101 | 110 | ||
102 | void test(void) |
111 | void test(void) |
103 | { |
112 | { |