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author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/pgf/base/tex/pgfmathfunctions.round.code.tex |
Initial commit
Diffstat (limited to 'graphics/pgf/base/tex/pgfmathfunctions.round.code.tex')
-rw-r--r-- | graphics/pgf/base/tex/pgfmathfunctions.round.code.tex | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/graphics/pgf/base/tex/pgfmathfunctions.round.code.tex b/graphics/pgf/base/tex/pgfmathfunctions.round.code.tex new file mode 100644 index 0000000000..4bd05c18c4 --- /dev/null +++ b/graphics/pgf/base/tex/pgfmathfunctions.round.code.tex @@ -0,0 +1,123 @@ +% Copyright 2007 by Mark Wibrow +% +% 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. + +% This file defines the mathematical functions and operators. +% +% Version 1.414213 29/9/2007 + +% round function. Uses asymmetric half-up rounding. +% +\pgfmathdeclarefunction{round}{1}{% + \begingroup% + \expandafter\pgfmath@x#1pt\relax% + \afterassignment\pgfmath@xa% + \expandafter\c@pgfmath@counta\the\pgfmath@x\relax% + \pgfmath@xb\pgfmath@x% + \ifdim\pgfmath@xb<0pt\relax% + \ifdim\pgfmath@xa<0.5pt\relax% + \else% + \advance\c@pgfmath@counta-1\relax% + \fi% + \else% + \ifdim\pgfmath@xa<0.5pt\relax% + \else% + \advance\c@pgfmath@counta1\relax% + \fi% + \fi% + \pgfmath@returnone\the\c@pgfmath@counta pt% + \endgroup% +}% + +% floor function. +% +\pgfmathdeclarefunction{floor}{1}{% + \begingroup% + \expandafter\pgfmath@x#1pt\relax% + \afterassignment\pgfmathfloor@collect@remainder% + \expandafter\c@pgfmath@counta\the\pgfmath@x\pgfmath@% + \expandafter\pgfmath@x#1pt\relax% + \ifdim\pgfmath@x<0pt\relax% + \ifdim\pgfmathfloor@remainder>0pt + \advance\c@pgfmath@counta by -1\relax% + \else + % ok, we stripped only '0'. + \fi + \fi% + \pgfmath@x\c@pgfmath@counta pt\relax% + \pgfmath@returnone\pgfmath@x% + \endgroup% +}% + +\def\pgfmathfloor@collect@remainder#1\pgfmath@{% + \def\pgfmathfloor@remainder{#1}% + \ifx\pgfmathfloor@remainder\pgfutil@empty + \def\pgfmathfloor@remainder{0}% + \fi +}% + +% ceil function. +% +\pgfmathdeclarefunction{ceil}{1}{% + \begingroup% + \expandafter\pgfmath@x#1pt\relax% + \afterassignment\pgfmath@gobbletilpgfmath@% + \expandafter\c@pgfmath@counta\the\pgfmath@x\relax\pgfmath@% + \pgfmath@y\pgfmath@x% + \advance\pgfmath@y-\c@pgfmath@counta pt\relax% + \pgfmath@x\c@pgfmath@counta pt\relax% + \ifdim\pgfmath@y>0pt\relax% + \advance\pgfmath@x1pt\relax% + \fi% + \pgfmath@returnone\pgfmath@x% + \endgroup% +}% + +% int function +% +\pgfmathdeclarefunction{int}{1}{% + \begingroup% + \expandafter\pgfmathint@@#1.\pgfmath@stop + \pgfmath@smuggleone\pgfmathresult% + \endgroup} + +\def\pgfmathint@@#1.#2\pgfmath@stop{% + \def\pgfmath@temp{#1}% + \ifx\pgfmath@temp\pgfmath@empty% + \def\pgfmathresult{0}% + \else% + \pgfmath@in@{#1}{+-+0-0}% + \ifpgfmath@in@ + \def\pgfmathresult{0}% + \else% + \def\pgfmathresult{#1}% + \fi% + \fi} + +% frac function. +% +\pgfmathdeclarefunction{frac}{1}{% + \begingroup% + \expandafter\pgfmathfrac@@#1.\pgfmath@stop% + \pgfmath@smuggleone\pgfmathresult% + \endgroup} + +\def\pgfmathfrac@@#1.{% + \pgfmath@ifnextchar\pgfmath@stop{\def\pgfmathresult{0.0}\pgfmath@gobbleone}{\pgfmathfrac@@@}% +} +\def\pgfmathfrac@@@#1.\pgfmath@stop{\def\pgfmathresult{0.#1}} + +% real function. +% +\pgfmathdeclarefunction{real}{1}{% + \begingroup% + \pgfmath@x=#1pt\relax% + \edef\pgfmathresult{\pgfmath@tonumber{\pgfmath@x}}% + \pgfmath@smuggleone\pgfmathresult% + \endgroup% +} |