Mercurial > op > Looping

annotate Looping.cpp @ 7:69b8c75e9c24 default

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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:
diff changeset
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>
parents:
diff changeset
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。
"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
parents:
diff changeset
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。
"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
parents:
diff changeset
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>
parents:
diff changeset
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>
parents:
diff changeset
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:
diff changeset
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>
parents:
diff changeset
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:
diff changeset
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>
parents:
diff changeset
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。
"uncorrelated zombie" <uncorrelated@yahoo.co.jp>
parents:
diff changeset
11 };
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:
diff changeset
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>
parents:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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>
parents:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
40 printf("%d\nC++\t%f\n", n, t2 - t1);
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:
diff changeset
41 delete o;
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:
diff changeset
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>
parents:
diff changeset
43 }