Mercurial > op > Looping

annotate Looping.c @ 7:69b8c75e9c24 default

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Scalaのソースコードを追加。
author "uncorrelated zombie" <uncorrelated@yahoo.co.jp>
date Fri, 18 Feb 2011 10:32:06 +0900
parents 2216535ade9c
children
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1 #include <stdio.h>
2216535ade9c メンバー関数/メソッド呼び出しのベンチマーク。
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2 #include <stdlib.h>
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3 #include <limits.h>
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4 #include <sys/time.h>
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5
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6 typedef struct {
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7 int n0;
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8 } Looping;
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9
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10 int calc(Looping *s, int n){
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11 int n1 = s->n0 + (1 - 2*(n%2));
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12 s->n0 = n;
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13 return n1;
2216535ade9c メンバー関数/メソッド呼び出しのベンチマーク。
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14 }
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15
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16 double gettimeofday_sec()
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17 {
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18 struct timeval tv;
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19 gettimeofday(&tv, NULL);
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20 return tv.tv_sec + (double)tv.tv_usec*1e-6;
2216535ade9c メンバー関数/メソッド呼び出しのベンチマーク。
"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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21 }
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22
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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23 int main(){
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24 Looping *o;
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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25 unsigned c;
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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26 int n = 1;
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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27 double t1, t2;
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28
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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29 o = (Looping *)malloc(sizeof(Looping));
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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30 o->n0 = 0;
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31
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parents:
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32 t1 = gettimeofday_sec();
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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33 for(c=0;c<INT_MAX;c++){
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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34 n = calc(o, n);
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35 }
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
parents:
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36 t2 = gettimeofday_sec();
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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37 printf("%d\nC\t%f\n", n, t2 - t1);
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38
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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39 free(o);
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40 return 0;
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41 }