2010年3月アーカイブ

/* cos01.c*/

#include <stdio.h> 
#include <math.h> 

int main() {
  int i, j, genbun = 5;
  double rad, cosvalue, pai = 3.14;

  printf( "角度\tcos値\tイメージ\n" );

  for( i = 0; i < 60; i++ ) {
    printf( "-" );
  }

  for( i = 90; i >= 0; i -= genbun ) {
    rad = (pai * i) / 180;
    cosvalue = cos(rad);
    printf( "\n%2d\t%f ", i, cosvalue );
    for( j = 1; j <= (int)(cosvalue * 40); j++ ) {
      printf( "*" );
    }
  }

  printf( "\n" );
  return 0;
}

$ gcc cos01.c 
/tmp/ccwmJ23Q.o: In function `main':
cos01.c:(.text+0x70): undefined reference to `cos'
collect2: ld はステータス 1 で終了しました

数学関数を使う場合には、コンパイルするときに -lm という
オプションを付ける必要があります。

角度    cos値   イメージ
------------------------------------------------------------
90      0.000796 
85      0.087905 ***
80      0.174345 ******
75      0.259460 **********
70      0.342602 *************
65      0.423139 ****************
60      0.500460 ********************
55      0.573975 **********************
50      0.643126 *************************
45      0.707388 ****************************
40      0.766272 ******************************
35      0.819330 ********************************
30      0.866158 **********************************
25      0.906401 ************************************
20      0.939753 *************************************
15      0.965960 **************************************
10      0.984823 ***************************************
 5      0.996199 ***************************************
 0      1.000000 ****************************************

[root@localhost ~]# yum --enablerepo=rpmforge search lisp
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
 * addons: rsync.atworks.co.jp
 * base: rsync.atworks.co.jp
 * extras: rsync.atworks.co.jp
 * rpmforge: fr2.rpmfind.net
 * updates: rsync.atworks.co.jp
=============================================== Matched: lisp ===============================================
anthy-el.i386 : Emacs Lisp files to use Anthy on Emacs
clisp.i386 : ANSI Common Lisp implementation
emacs.i386 : GNU Emacs テキストエディタ
emacs-common.i386 : Emacs 一般ファイル
emacs-el.i386 : Emacs に含まれる Emacs Lisp ソースファイル。
emacs-leim.i386 : 各国の文字用のインプットメソッド用の Emacs Lisp ファイル。
emacs-nox.i386 : X のサポートを伴わない GNU Emacs テキストエディタ
ruby-mode.i386 : スクリプト言語 Ruby用のEmacs Lisp rubyモード
swig.i386 : Simplified Wrapper and Interface Generator

clispあった！！！

clispとは？

[root@localhost ~]# yum --enablerepo=rpmforge install clisp
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
 * addons: rsync.atworks.co.jp
 * base: rsync.atworks.co.jp
 * extras: rsync.atworks.co.jp
 * rpmforge: ftp-stud.fht-esslingen.de
 * updates: rsync.atworks.co.jp
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package clisp.i386 0:2.42-1.el5.rf set to be updated
--> Processing Dependency: libsigsegv.so.0 for package: clisp
--> Running transaction check
---> Package libsigsegv.i386 0:2.4-1.el5.rf set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================
 Package                   Arch                Version                         Repository               Size
=============================================================================================================
Installing:
 clisp                     i386                2.42-1.el5.rf                   rpmforge                6.6 M
Installing for dependencies:
 libsigsegv                i386                2.4-1.el5.rf                    rpmforge                 34 k

Transaction Summary
=============================================================================================================
Install      2 Package(s)
Update       0 Package(s)
Remove       0 Package(s)

Total download size: 6.6 M
Is this ok [y/N]: y
Downloading Packages:
(1/2): libsigsegv-2.4-1.el5.rf.i386.rpm                                               |  34 kB     00:01
(2/2): clisp-2.42-1.el5.rf.i386.rpm                                                   | 6.6 MB     01:02
-------------------------------------------------------------------------------------------------------------
Total                                                                        104 kB/s | 6.6 MB     01:05
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : libsigsegv                                                                            1/2
  Installing     : clisp                                                                                 2/2

Installed:
  clisp.i386 0:2.42-1.el5.rf

Dependency Installed:
  libsigsegv.i386 0:2.4-1.el5.rf

Complete!

[root@localhost ~]# clisp
  i i i i i i i       ooooo    o        ooooooo   ooooo   ooooo
  I I I I I I I      8     8   8           8     8     o  8    8
  I  \ `+' /  I      8         8           8     8        8    8
   \  `-+-'  /       8         8           8      ooooo   8oooo
    `-__|__-'        8         8           8           8  8
        |            8     o   8           8     o     8  8
  ------+------       ooooo    8oooooo  ooo8ooo   ooooo   8

Welcome to GNU CLISP 2.41.1 (2007-10-12) 

Copyright (c) Bruno Haible, Michael Stoll 1992, 1993
Copyright (c) Bruno Haible, Marcus Daniels 1994-1997
Copyright (c) Bruno Haible, Pierpaolo Bernardi, Sam Steingold 1998
Copyright (c) Bruno Haible, Sam Steingold 1999-2000
Copyright (c) Sam Steingold, Bruno Haible 2001-2007

Type :h and hit Enter for context help.

[1]> (+ 10 20)
30

初めての人のためのLISP[増補改訂版]

posted with amazlet at 10.03.26

竹内 郁雄
翔泳社 (2010-03-10)
売り上げランキング: 503

おすすめ度の平均:

この本を読まずしてなんとする！
Ｌｉｓｐのおすすめテキストです

Amazon.co.jp で詳細を見る

mysql>  show variables like 'character_%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+

mysql> status
--------------
mysql  Ver 14.12 Distrib 5.0.45, for redhat-linux-gnu (i686) using readline 5.0

Connection id:          12
Current database:       lock_test
Current user:           xxxxxxxx@localhost
SSL:                    Not in use
Current pager:          stdout
Using outfile:          ''
Using delimiter:        ;
Server version:         5.0.45-log Source distribution
Protocol version:       10
Connection:             Localhost via UNIX socket
Server characterset:    utf8
Db     characterset:    utf8
Client characterset:    utf8
Conn.  characterset:    utf8
UNIX socket:            /var/lib/mysql/mysql.sock
Uptime:                 6 hours 13 min 12 sec

Threads: 22  Questions: 840896  Slow queries: 0  Opens: 232  Flush tables: 1  Open tables: 162  Queries per second avg: 37.553
--------------

mysql> show status;
+-----------------------------------+-----------+
| Variable_name                     | Value     |
+-----------------------------------+-----------+
・・・いっぱい出るので省略

mysql>show variables;
+---------------------------------+---------------------------------------------------------+
| Variable_name                   | Value                                                   |
+---------------------------------+---------------------------------------------------------+
・・・いっぱい出るので省略

MySQLサーバーの起動時設定を確認するには，mysqldのパラメータに--helpを追加して実行する。