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| Rev | Author | Line No. | Line |
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| 86 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 Jakub Vana |
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| 91 | jermar | 3 | * Copyright (C) 2005 Jakub Jermar |
| 86 | jermar | 4 | * All rights reserved. |
| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * |
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| 10 | * - Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * - Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * - The name of the author may not be used to endorse or promote products |
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| 16 | * derived from this software without specific prior written permission. |
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| 17 | * |
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | */ |
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| 84 | vana | 29 | |
| 30 | #include <print.h> |
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| 31 | #include <debug.h> |
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| 32 | #include <panic.h> |
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| 33 | |||
| 34 | #include <test.h> |
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| 111 | palkovsky | 35 | #include <arch/atomic.h> |
| 84 | vana | 36 | #include <proc/thread.h> |
| 37 | |||
| 94 | jermar | 38 | #include <arch.h> |
| 39 | |||
| 91 | jermar | 40 | #define THREADS 150*2 |
| 283 | palkovsky | 41 | #define ATTEMPTS 100 |
| 91 | jermar | 42 | |
| 43 | #define E_10e8 271828182 |
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| 44 | #define PI_10e8 314159265 |
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| 45 | |||
| 46 | static inline double sqrt(double x) { double v; __asm__ ("fsqrt\n" : "=t" (v) : "0" (x)); return v; } |
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| 47 | |||
| 483 | jermar | 48 | static atomic_t threads_ok; |
| 91 | jermar | 49 | static waitq_t can_start; |
| 50 | |||
| 86 | jermar | 51 | static void e(void *data) |
| 84 | vana | 52 | { |
| 92 | jermar | 53 | int i; |
| 91 | jermar | 54 | double e,d,le,f; |
| 55 | |||
| 56 | waitq_sleep(&can_start); |
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| 57 | |||
| 92 | jermar | 58 | for (i = 0; i<ATTEMPTS; i++) { |
| 59 | le=-1; |
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| 60 | e=0; |
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| 61 | f=1; |
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| 62 | |||
| 63 | for(d=1;e!=le;d*=f,f+=1) { |
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| 64 | le=e; |
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| 65 | e=e+1/d; |
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| 66 | } |
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| 67 | |||
| 68 | if((int)(100000000*e)!=E_10e8) |
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| 69 | panic("tid%d: e*10e8=%d\n", THREAD->tid, (int) 100000000*e); |
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| 86 | jermar | 70 | } |
| 91 | jermar | 71 | |
| 119 | jermar | 72 | atomic_inc(&threads_ok); |
| 84 | vana | 73 | } |
| 74 | |||
| 91 | jermar | 75 | static void pi(void *data) |
| 76 | { |
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| 92 | jermar | 77 | int i; |
| 125 | jermar | 78 | double lpi, pi; |
| 79 | double n, ab, ad; |
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| 84 | vana | 80 | |
| 91 | jermar | 81 | waitq_sleep(&can_start); |
| 84 | vana | 82 | |
| 91 | jermar | 83 | |
| 92 | jermar | 84 | for (i = 0; i<ATTEMPTS; i++) { |
| 85 | lpi = -1; |
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| 86 | pi = 0; |
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| 91 | jermar | 87 | |
| 125 | jermar | 88 | for (n=2, ab = sqrt(2); lpi != pi; n *= 2, ab = ad) { |
| 89 | double sc, cd; |
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| 92 | jermar | 90 | |
| 125 | jermar | 91 | sc = sqrt(1 - (ab*ab/4)); |
| 92 | cd = 1 - sc; |
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| 93 | ad = sqrt(ab*ab/4 + cd*cd); |
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| 94 | lpi = pi; |
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| 95 | pi = 2 * n * ad; |
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| 96 | } |
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| 92 | jermar | 97 | |
| 98 | if((int)(100000000*pi)!=PI_10e8) |
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| 99 | panic("tid%d: pi*10e8=%d\n", THREAD->tid, (int) 100000000*pi); |
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| 91 | jermar | 100 | } |
| 92 | jermar | 101 | |
| 119 | jermar | 102 | atomic_inc(&threads_ok); |
| 91 | jermar | 103 | } |
| 104 | |||
| 105 | |||
| 84 | vana | 106 | void test(void) |
| 107 | { |
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| 86 | jermar | 108 | thread_t *t; |
| 109 | int i; |
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| 84 | vana | 110 | |
| 91 | jermar | 111 | waitq_initialize(&can_start); |
| 112 | |||
| 113 | printf("FPU test #1\n"); |
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| 114 | printf("Creating %d threads... ", THREADS); |
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| 115 | |||
| 116 | for (i=0; i<THREADS/2; i++) { |
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| 117 | if (!(t = thread_create(e, NULL, TASK, 0))) |
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| 118 | panic("could not create thread\n"); |
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| 86 | jermar | 119 | thread_ready(t); |
| 91 | jermar | 120 | if (!(t = thread_create(pi, NULL, TASK, 0))) |
| 121 | panic("could not create thread\n"); |
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| 122 | thread_ready(t); |
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| 86 | jermar | 123 | } |
| 91 | jermar | 124 | printf("ok\n"); |
| 90 | vana | 125 | |
| 91 | jermar | 126 | thread_sleep(1); |
| 127 | waitq_wakeup(&can_start, WAKEUP_ALL); |
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| 84 | vana | 128 | |
| 91 | jermar | 129 | while (threads_ok != THREADS) |
| 130 | ; |
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| 131 | |||
| 132 | printf("Test passed.\n"); |
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| 84 | vana | 133 | } |