Mercurial > op > Looping

annotate Looping.cpp @ 12:dab1e83799e4 >>178 tip

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R版のソースコードを追加。
author "uncorrelated zombie" <uncorrelated@yahoo.co.jp>
date Sat, 04 Feb 2012 04:10:01 +0900
parents 2216535ade9c
children
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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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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。
"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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2 #include <limits.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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3 #include <sys/time.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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4
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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5 class Looping {
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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6 public:
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>
parents:
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7 Looping();
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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8 int calc(int n);
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>
parents:
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9 private :
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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10 int n0;
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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11 };
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12
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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13 Looping::Looping(){
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>
parents:
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14 n0 = 0;
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>
parents:
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15 }
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>
parents:
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16
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>
parents:
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17 int Looping::calc(int n){
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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18 int n1 = n0 + (1 - 2*(n%2));
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>
parents:
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19 n0 = n;
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>
parents:
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20 return n1;
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>
parents:
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21 }
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>
parents:
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22
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>
parents:
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23 double gettimeofday_sec()
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>
parents:
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24 {
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>
parents:
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25 struct timeval tv;
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>
parents:
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26 gettimeofday(&tv, NULL);
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>
parents:
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27 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>
parents:
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28 }
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>
parents:
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29
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>
parents:
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30 int main(){
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>
parents:
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31 Looping *o = new Looping();
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>
parents:
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32 unsigned c;
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>
parents:
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33 int n = 1;
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>
parents:
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34 double t1, t2;
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>
parents:
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35 t1 = gettimeofday_sec();
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>
parents:
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36 for(c=0;c<INT_MAX;c++){
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>
parents:
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37 n = o->calc(n);
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>
parents:
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38 }
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>
parents:
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39 t2 = gettimeofday_sec();
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>
parents:
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40 printf("%d\nC++\t%f\n", n, t2 - t1);
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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41 delete o;
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"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
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42 return 0;
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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43 }