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Rev | Author | Line No. | Line |
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3918 | decky | 1 | /* |
2 | * Copyright (c) 2005 Jakub Vana |
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3 | * Copyright (c) 2005 Jakub Jermar |
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4 | * All rights reserved. |
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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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29 | |||
30 | #include <print.h> |
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31 | #include <debug.h> |
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32 | |||
33 | #include <test.h> |
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34 | #include <atomic.h> |
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35 | #include <proc/thread.h> |
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36 | |||
37 | #include <arch.h> |
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38 | #include <arch/arch.h> |
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39 | |||
40 | |||
41 | #define THREADS 150 |
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42 | #define ATTEMPTS 100 |
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43 | |||
44 | #define E_10e8 271828182 |
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45 | #define PI_10e8 3141592 |
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46 | |||
47 | static inline long double sqrt(long double a) |
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48 | { |
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49 | long double x = 1; |
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50 | long double lx = 0; |
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51 | |||
52 | if (a < 0.00000000000000001) |
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53 | return 0; |
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54 | |||
55 | while (x != lx) { |
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56 | lx = x; |
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57 | x = (x + (a / x)) / 2; |
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58 | } |
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59 | |||
60 | return x; |
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61 | } |
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62 | |||
63 | static atomic_t threads_ok; |
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64 | static atomic_t threads_fault; |
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65 | static waitq_t can_start; |
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66 | |||
67 | static void e(void *data) |
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68 | { |
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69 | int i; |
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70 | double e, d, le, f; |
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71 | |||
72 | thread_detach(THREAD); |
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73 | |||
74 | waitq_sleep(&can_start); |
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75 | |||
76 | for (i = 0; i<ATTEMPTS; i++) { |
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77 | le = -1; |
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78 | e = 0; |
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79 | f = 1; |
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80 | |||
81 | for (d = 1; e != le; d *= f, f += 1) { |
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82 | le = e; |
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83 | e = e + 1 / d; |
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84 | } |
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85 | |||
86 | if ((int) (100000000 * e) != E_10e8) { |
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4227 | decky | 87 | TPRINTF("tid%" PRIu64 ": e*10e8=%zd should be %" PRIun "\n", THREAD->tid, (unative_t) (100000000 * e), (unative_t) E_10e8); |
3918 | decky | 88 | atomic_inc(&threads_fault); |
89 | break; |
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90 | } |
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91 | } |
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92 | atomic_inc(&threads_ok); |
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93 | } |
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94 | |||
95 | static void pi(void *data) |
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96 | { |
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97 | int i; |
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98 | double lpi, pi; |
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99 | double n, ab, ad; |
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100 | |||
101 | thread_detach(THREAD); |
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102 | |||
103 | waitq_sleep(&can_start); |
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104 | |||
105 | for (i = 0; i < ATTEMPTS; i++) { |
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106 | lpi = -1; |
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107 | pi = 0; |
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108 | |||
109 | for (n = 2, ab = sqrt(2); lpi != pi; n *= 2, ab = ad) { |
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110 | double sc, cd; |
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111 | |||
112 | sc = sqrt(1 - (ab * ab / 4)); |
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113 | cd = 1 - sc; |
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114 | ad = sqrt(ab * ab / 4 + cd * cd); |
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115 | lpi = pi; |
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116 | pi = 2 * n * ad; |
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117 | } |
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118 | |||
119 | if ((int) (1000000 * pi) != PI_10e8) { |
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4227 | decky | 120 | TPRINTF("tid%" PRIu64 ": pi*10e8=%zd should be %" PRIun "\n", THREAD->tid, (unative_t) (1000000 * pi), (unative_t) (PI_10e8 / 100)); |
3918 | decky | 121 | atomic_inc(&threads_fault); |
122 | break; |
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123 | } |
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124 | } |
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125 | atomic_inc(&threads_ok); |
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126 | } |
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127 | |||
4227 | decky | 128 | char *test_fpu1(void) |
3918 | decky | 129 | { |
130 | unsigned int i, total = 0; |
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131 | |||
132 | waitq_initialize(&can_start); |
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133 | atomic_set(&threads_ok, 0); |
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134 | atomic_set(&threads_fault, 0); |
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135 | |||
4227 | decky | 136 | TPRINTF("Creating %u threads... ", 2 * THREADS); |
3918 | decky | 137 | |
4227 | decky | 138 | for (i = 0; i < THREADS; i++) { |
3918 | decky | 139 | thread_t *t; |
140 | |||
141 | if (!(t = thread_create(e, NULL, TASK, 0, "e", false))) { |
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4227 | decky | 142 | TPRINTF("could not create thread %u\n", 2 * i); |
3918 | decky | 143 | break; |
144 | } |
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145 | thread_ready(t); |
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146 | total++; |
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147 | |||
148 | if (!(t = thread_create(pi, NULL, TASK, 0, "pi", false))) { |
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4227 | decky | 149 | TPRINTF("could not create thread %u\n", 2 * i + 1); |
3918 | decky | 150 | break; |
151 | } |
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152 | thread_ready(t); |
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153 | total++; |
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154 | } |
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155 | |||
4227 | decky | 156 | TPRINTF("ok\n"); |
3918 | decky | 157 | |
158 | thread_sleep(1); |
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159 | waitq_wakeup(&can_start, WAKEUP_ALL); |
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160 | |||
161 | while (atomic_get(&threads_ok) != (long) total) { |
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4227 | decky | 162 | TPRINTF("Threads left: %d\n", total - atomic_get(&threads_ok)); |
3918 | decky | 163 | thread_sleep(1); |
164 | } |
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165 | |||
166 | if (atomic_get(&threads_fault) == 0) |
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167 | return NULL; |
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168 | |||
169 | return "Test failed"; |
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170 | } |