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https://github.com/smarty-php/smarty.git
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e799943aba
Sorry for such a big commit, but this should be done only once. And please, don't kill me if I did a stupid thing :)
155 lines
3.8 KiB
XML
155 lines
3.8 KiB
XML
<?xml version="1.0" encoding="windows-1251"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 1.1 Maintainer: freespace Status: ready -->
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<sect1 id="language.function.math">
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<title>math</title>
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<informaltable frame="all">
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<tgroup cols="5">
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<colspec colname="param" align="center" />
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<colspec colname="type" align="center" />
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<colspec colname="required" align="center" />
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<colspec colname="default" align="center" />
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<colspec colname="desc" />
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<thead>
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<row>
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<entry>Èìÿ àòðèáóòà</entry>
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<entry>Òèï</entry>
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<entry>Îáÿçàòåëåí</entry>
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<entry>Ïî óìîë÷àíèþ</entry>
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<entry>Îïèñàíèå</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>equation</entry>
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<entry>string</entry>
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<entry>Äà</entry>
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<entry><emphasis>n/a</emphasis></entry>
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<entry>ìàòåìàòè÷åñêîé âûðàæåíèå</entry>
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</row>
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<row>
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<entry>format</entry>
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<entry>string</entry>
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<entry>Íåò</entry>
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<entry><emphasis>n/a</emphasis></entry>
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<entry>ôîðìàò ðóçóëüòàòà (sprintf)</entry>
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</row>
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<row>
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<entry>var</entry>
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<entry>numeric</entry>
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<entry>Äà</entry>
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<entry><emphasis>n/a</emphasis></entry>
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<entry>ïåðåìåííàÿ âûðàæåíèÿ</entry>
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</row>
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<row>
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<entry>assign</entry>
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<entry>string</entry>
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<entry>Íåò</entry>
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<entry><emphasis>n/a</emphasis></entry>
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<entry>
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ïåðåìåííàÿ øàáëîíà, êîòîðîé áóäåò ïðèñâîåí
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âûâîä
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</entry>
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</row>
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<row>
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<entry>[var ...]</entry>
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<entry>numeric</entry>
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<entry>Äà</entry>
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<entry><emphasis>n/a</emphasis></entry>
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<entry>äîïîëíèòåëüíûå ïåðåìåííûå âûðàæåíèÿ</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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<para>
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ïîëüçîâàòåëüñêàÿ ôóíêöèÿ math ïîçâîëÿåò äèçàéíåðàì øàáëîíîâ
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âû÷èñëÿòü ìàòåìàòè÷åñêèå âûðàæåíèÿ â øàáëîíå. Ëþáàÿ ÷èñëåííàÿ
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ïåðåìåííàÿ øàáëîíà ìîæåò áûòü èñïîëüçîâàíà â âûðàæåíèè. Ïåðåìåííûå,
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èñïîëüçóåìûå â âûðàæåíèè, ïåðåäàþòñÿ â êà÷åñòâå ïàðàìåòðîâ,
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êîòîðûìè ìîãóò áûòü êàê è ïåðåìåííûå øàáëîíà, òàê è ñòàòè÷åñêèå
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çíà÷åíèÿ. Äîïóñòèìûå îïåðàòîðû: +, -, /, *, abs, ceil, cos,
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exp, floor, log, log10, max, min, pi, pow, rand, round, sin, sqrt,
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srans è tan. Îçíàêîìòåñü ñ php äîêóìåíòàöèåé ïîä äàííûì ôóíêöèÿì.
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</para>
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<para>
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Åñëè óêàçàí àòðèáóò "assign", òî âûâîä áóäåò ïðèñâîåí ïåðåìåííîé,
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âìåñòî îòîáðàæåíèÿ.
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</para>
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<note>
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<title>Òåõíè÷åñêîå Çàìå÷àíèå</title>
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<para>
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èñïîëüçîâàíèå ôóíêöèè math çíà÷èòåëüíî ñêàçûâàåòñÿ íà
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âðåìåíè âûïîëíåíèÿ ïðîãðàììû, òàê êàê ðåàëèçîâàíà ñ ïîìîùüþ
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php ôóíêöèè eval(). Âûïîëíåíèå ìàòåìàòè÷åñêèõ îïåðàöèé â php
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ïðîãðàììå áîëåå ýôôåêòèâíî, òî åñòü âåçäå, ãäå âîçìîæíî,
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ñëåäóåò äåëàòü âû÷èñëåíèÿ â ïðîãðàììå è ïåðåäàâàòü ðåçóëüòàò
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â øàáëîí. Ñëåäóåò òàêæå èçáåãàòü ïîâòîðÿþùåãîñÿ âûçîâà ôóíêöèè
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math (íàïðèìåð, â öèêëàõ).
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</para>
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</note>
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<example>
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<title>math</title>
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<programlisting>
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<![CDATA[
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{* $height=4, $width=5 *}
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{math equation="x + y" x=$height y=$width}
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OUTPUT:
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9
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{* $row_height = 10, $row_width = 20, #col_div# = 2, assigned in template *}
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{math equation="height * width / division"
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height=$row_height
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width=$row_width
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division=#col_div#}
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OUTPUT:
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100
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{* ìîæíî èñïîëüçîâàòü ñêîáêè *}
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{math equation="(( x + y ) / z )" x=2 y=10 z=2}
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OUTPUT:
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6
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{* ìîæíî óêàçàòü ôîðìàò ðåçóëüòàòà (sprintf) *}
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{math equation="x + y" x=4.4444 y=5.0000 format="%.2f"}
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OUTPUT:
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9.44
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]]>
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</programlisting>
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</example>
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</sect1>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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