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-% Copyright 2006 by Till Tantau
-%
-% This file may be distributed and/or modified
-%
-% 1. under the LaTeX Project Public License and/or
-% 2. under the GNU Public License.
-%
-% See the file doc/generic/pgf/licenses/LICENSE for more details.
-
-\ProvidesFileRCS $Header: /cvsroot/pgf/pgf/generic/pgf/basiclayer/pgfcoremath.code.tex,v 1.3 2006/10/15 15:54:25 tantau Exp $
-
-
-% Mathematical stuff
-
-
-% Internal registers
-\ifx\pgflatex@setcounter\@undefined
- \def\pgflatex@setcounter{\setcounter}
-\fi
-
-\newcount\c@pgf@counta
-\newcount\c@pgf@countb
-\newcount\c@pgf@countc
-\newcount\c@pgf@countd
-
-
-% Internal setting function
-\def\pgf@setmath#1#2{\edef\pgf@temp{#2pt}\csname pgf@#1\endcsname=\pgf@temp}
-
-
-% Calculate sin of a degree
-%
-% #1 = degree
-%
-% x = sin of #1
-%
-% Example:
-%
-% \pgfsin{30}
-
-\def\pgfsin#1{%
- \pgf@setcounter{pgf@counta}{#1}\relax%
- \c@pgf@countb=90%
- \advance\c@pgf@countb by-\c@pgf@counta%
- \ifnum\c@pgf@countb>179%
- \advance\c@pgf@countb by-360%
- \else%
- \ifnum\c@pgf@countb<-179%
- \advance\c@pgf@countb by360%
- \fi\fi%
- \ifnum\c@pgf@countb<0\relax%
- \c@pgf@countb=-\c@pgf@countb%
- \fi%
- \pgf@setmath{x}{\csname pgf@cos\the\c@pgf@countb\endcsname}}
-
-
-% Calculate cos of a degree
-%
-% #1 = degree
-%
-% x = cos of #1
-%
-% Example:
-%
-% \pgfcos{30}
-
-\def\pgfcos#1{%
- \pgf@setcounter{pgf@counta}{#1}%
- \ifnum\c@pgf@counta>179%
- \advance\c@pgf@counta by-360%
- \else%
- \ifnum\c@pgf@counta<-179%
- \advance\c@pgf@counta by360%
- \fi\fi%
- \ifnum\c@pgf@counta<0\relax%
- \c@pgf@counta=-\c@pgf@counta%
- \fi%
- \pgf@setmath{x}{\csname pgf@cos\the\c@pgf@counta\endcsname}}
-
-
-
-% Calculate sin and cos of a degree
-%
-% #1 = degree
-%
-% x = cos of #1
-% y = sin of #1
-%
-% Example:
-%
-% \pgfcos{30}
-
-\def\pgfsincos#1{%
- \pgf@setcounter{pgf@counta}{#1}%
- \ifnum\c@pgf@counta>179%
- \advance\c@pgf@counta by-360%
- \else%
- \ifnum\c@pgf@counta<-179%
- \advance\c@pgf@counta by360%
- \fi\fi\relax%
- \c@pgf@countb=\c@pgf@counta\relax%
- \ifnum\c@pgf@counta<0\relax%
- \c@pgf@counta=-\c@pgf@counta%
- \fi\relax%
- \pgf@setmath{y}{\csname pgf@cos\the\c@pgf@counta\endcsname}%
- \c@pgf@counta=90%
- \advance\c@pgf@counta by-\c@pgf@countb\relax%
- \ifnum\c@pgf@counta>179%
- \advance\c@pgf@counta by-360%
- \else%
- \ifnum\c@pgf@counta<-179%
- \advance\c@pgf@counta by360%
- \fi\fi\relax%
- \ifnum\c@pgf@counta<0\relax%
- \c@pgf@counta=-\c@pgf@counta%
- \fi\relax%
- \pgf@setmath{x}{\csname pgf@cos\the\c@pgf@counta\endcsname}}
-
-
-% Internal tables
-
-\def\pgf@def#1#2#3{\expandafter\def\csname pgf@#1#2\endcsname{#3}}
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-
-
-
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-
-
-
-\endinput