calc.sty

该文件为c++的数学函数库!是一个非常有用的编程工具.它含有各种数学函数,为科学计算、工程应用等程序编写提供方便！

%% 
%% This is file `calc.sty',
%% generated with the docstrip utility.
%% 
%% The original source files were:
%% 
%% calc.dtx  (with options: `package')

%% File `calc.dtx'.
%% Copyright (C) 1992--1995 Kresten Krab Thorup and Frank Jensen.
%% All rights reserved.

\def\fileversion{v4.0c (TEST)}
\def\filedate{1995/04/10}

%% \CharacterTable
%%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%%   Digits        \0\1\2\3\4\5\6\7\8\9
%%   Exclamation   \!     Double quote  \"     Hash (number) \#
%%   Dollar        \$     Percent       \%     Ampersand     \&
%%   Acute accent  \'     Left paren    \(     Right paren   \)
%%   Asterisk      \*     Plus          \+     Comma         \,
%%   Minus         \-     Point         \.     Solidus       \/
%%   Colon         \:     Semicolon     \;     Less than     \<
%%   Equals        \=     Greater than  \>     Question mark \?
%%   Commercial at \@     Left bracket  \[     Backslash     \\
%%   Right bracket \]     Circumflex    \^     Underscore    \_
%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%%   Right brace   \}     Tilde         \~}
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{calc}[\filedate\space\fileversion]
\typeout{Package: `calc' \fileversion\space <\filedate> (KKT and FJ)}
\def\calc@assign@generic#1#2#3#4{\let\calc@A#1\let\calc@B#2%
    \expandafter\calc@open\expandafter(#4!%
    \global\calc@A\calc@B\endgroup#3\calc@B}
\def\calc@assign@count{\calc@assign@generic\calc@Acount\calc@Bcount}
\def\calc@assign@dimen{\calc@assign@generic\calc@Adimen\calc@Bdimen}
\def\calc@assign@skip{\calc@assign@generic\calc@Askip\calc@Bskip}
\newcount\calc@Acount   \newcount\calc@Bcount
\newdimen\calc@Adimen   \newdimen\calc@Bdimen
\newskip\calc@Askip     \newskip\calc@Bskip
\def\setcounter#1#2{\@ifundefined{c@#1}{\@nocounterr{#1}}%
   {\calc@assign@count{\global\csname c@#1\endcsname}{#2}}}
\def\addtocounter#1#2{\@ifundefined{c@#1}{\@nocounterr{#1}}%
   {\calc@assign@count{\global\advance\csname c@#1\endcsname}{#2}}}
\DeclareRobustCommand\setlength{\calc@assign@skip}
\DeclareRobustCommand\addtolength[1]{\calc@assign@skip{\advance#1}}
\def\calc@pre@scan#1{%
   \ifx(#1%
       \let\calc@next\calc@open
   \else
       \let\calc@next\calc@numeric
   \fi
   \calc@next#1}
\def\calc@open({\begingroup\aftergroup\calc@initB
   \begingroup\aftergroup\calc@initB
   \calc@pre@scan}
\def\calc@initB{\calc@B\calc@A}
\def\calc@numeric{\afterassignment\calc@post@scan \global\calc@A}
\def\calc@post@scan#1{%
   \ifx#1!\let\calc@next\endgroup \else
    \ifx#1+\let\calc@next\calc@add \else
     \ifx#1-\let\calc@next\calc@subtract \else
      \ifx#1*\let\calc@next\calc@multiplyx \else
       \ifx#1/\let\calc@next\calc@dividex \else
        \ifx#1)\let\calc@next\calc@close \else \calc@error#1%
        \fi
       \fi
      \fi
     \fi
    \fi
   \fi
   \calc@next}
\def\calc@add{\calc@generic@add\calc@addAtoB}
\def\calc@subtract{\calc@generic@add\calc@subtractAfromB}
\def\calc@generic@add#1{\endgroup\global\calc@A\calc@B\endgroup
   \begingroup\aftergroup#1\begingroup\aftergroup\calc@initB
   \calc@pre@scan}
\def\calc@addAtoB{\advance\calc@B\calc@A}
\def\calc@subtractAfromB{\advance\calc@B-\calc@A}
\def\calc@multiplyx#1{\def\calc@tmp{#1}%
   \ifx\calc@tmp\calc@ratio@x \let\calc@next\calc@ratio@multiply \else
      \ifx\calc@tmp\calc@real@x \let\calc@next\calc@real@multiply \else
         \let\calc@next\calc@multiply
      \fi
   \fi
   \calc@next#1}
\def\calc@dividex#1{\def\calc@tmp{#1}%
   \ifx\calc@tmp\calc@ratio@x \let\calc@next\calc@ratio@divide \else
      \ifx\calc@tmp\calc@real@x \let\calc@next\calc@real@divide \else
         \let\calc@next\calc@divide
      \fi
   \fi
   \calc@next#1}
\def\calc@ratio@x{\ratio}
\def\calc@real@x{\real}
\def\calc@multiply{\calc@generic@multiply\calc@multiplyBbyA}
\def\calc@divide{\calc@generic@multiply\calc@divideBbyA}
\def\calc@generic@multiply#1{\endgroup\begingroup
   \let\calc@A\calc@Acount \let\calc@B\calc@Bcount
   \aftergroup#1\calc@pre@scan}
\def\calc@multiplyBbyA{\multiply\calc@B\calc@Acount}
\def\calc@divideBbyA{\divide\calc@B\calc@Acount}
\def\calc@close
   {\endgroup\global\calc@A\calc@B
    \endgroup\global\calc@A\calc@B
    \calc@post@scan}
\def\calc@ratio@multiply\ratio{\calc@ratio@evaluate}
\def\calc@ratio@divide\ratio#1#2{\calc@ratio@evaluate{#2}{#1}}
\let\calc@numerator=\calc@Bcount
\newcount\calc@denominator
\def\calc@ratio@evaluate#1#2{%
   \endgroup\begingroup
      \calc@assign@dimen\calc@numerator{#1}%
      \calc@assign@dimen\calc@denominator{#2}%
      \gdef\calc@the@ratio{}%
      \ifnum\calc@numerator<0 \calc@numerator-\calc@numerator
         \gdef\calc@the@ratio{-}%
      \fi
      \ifnum\calc@denominator<0 \calc@denominator-\calc@denominator
         \xdef\calc@the@ratio{\calc@the@ratio-}%
      \fi
      \calc@Acount\calc@numerator
      \divide\calc@Acount\calc@denominator
      \xdef\calc@the@ratio{\calc@the@ratio\number\calc@Acount.}%
      \calc@next@digit \calc@next@digit \calc@next@digit
      \calc@next@digit \calc@next@digit \calc@next@digit
   \endgroup
   \calc@multiply@by@real\calc@the@ratio
   \begingroup
   \calc@post@scan}
\def\calc@next@digit{%
      \multiply\calc@Acount\calc@denominator
      \advance\calc@numerator -\calc@Acount
      \multiply\calc@numerator 10
      \calc@Acount\calc@numerator
      \divide\calc@Acount\calc@denominator
      \xdef\calc@the@ratio{\calc@the@ratio\number\calc@Acount}}
\def\calc@multiply@by@real#1{\calc@Bdimen #1\calc@B \calc@B\calc@Bdimen}
\def\calc@real@multiply\real#1{\endgroup
   \calc@multiply@by@real{#1}\begingroup
   \calc@post@scan}
\def\calc@real@divide\real#1{\calc@ratio@evaluate{1pt}{#1pt}}
\def\calc@error#1{%
   \errhelp{Calc error: I expected to see one of: + - * / )}%
   \errmessage{Invalid character `#1' in arithmetic expression}}
\endinput
%% 
%% End of file `calc.sty'.