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<?xml version="1.0" encoding="iso-8859-2"?>
<reference id="ref.bc">
<title>BCMath funkce pro vpoty s libovolnou pesnost</title>
<titleabbrev>BC math</titleabbrev>
<partintro>
<para>
Tyto funkce jsou dostupn pouze pokud bylo PHP zkonfigurovno s
<option role="configure">--enable-bcmath</option>.
</para>
</partintro>
<refentry id="function.bcadd">
<refnamediv>
<refname>bcadd</refname>
<refpurpose>Sest dv sla s libovolnou pesnost</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcadd</methodname>
<methodparam><type>string</type><parameter>left operand</parameter></methodparam>
<methodparam><type>string</type><parameter>right operand</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Pite <parameter>left operand</parameter> k
<parameter>right operand</parameter> a vrt souet v etzci.
Voliteln argument <parameter>scale</parameter> se pouv k
uren potu desetinnch mst ve vsledku.
</para>
<para>
Viz tak <function>bcsub</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.bccomp">
<refnamediv>
<refname>bccomp</refname>
<refpurpose>Porovnat dv sla s libovolnou pesnost</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>int</type><methodname>bccomp</methodname>
<methodparam><type>string</type><parameter>left operand</parameter></methodparam>
<methodparam><type>string</type><parameter>right operand</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Porovn <parameter>left operand</parameter> s
<parameter>right operand</parameter> a vrt vsledek jako integer.
Voliteln argument <parameter>scale</parameter> se pouv k
uren potu desetinnch mst pouitch pi porovnn. Nvratov hodnota
je 0, pokud jsou si oba operandy rovn. Pokud je
<parameter>left operand</parameter> vt ne
<parameter>right operand</parameter>, nvratov hodnota je +1, a pokud je
<parameter>left operand</parameter> men ne
<parameter>right operand</parameter>, nvratov hodnota je -1.
</para>
</refsect1>
</refentry>
<refentry id="function.bcdiv">
<refnamediv>
<refname>bcdiv</refname>
<refpurpose>Dlit dv sla s libovolnou pesnost</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcdiv</methodname>
<methodparam><type>string</type><parameter>left operand</parameter></methodparam>
<methodparam><type>string</type><parameter>right operand</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Vydl argument <parameter>left operand</parameter> argumentem
<parameter>right operand</parameter> a vrt vsledek.
Voliteln argument <parameter>scale</parameter> se pouv k
uren potu desetinnch mst ve vsledku.
</para>
<para>
Viz tak <function>bcmul</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.bcmod">
<refnamediv>
<refname>bcmod</refname>
<refpurpose>Zskat modulus sla s libovolnou pesnost</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcmod</methodname>
<methodparam><type>string</type><parameter>left operand</parameter></methodparam>
<methodparam><type>string</type><parameter>modulus</parameter></methodparam>
</methodsynopsis>
<para>
Vrt modulus argumentu <parameter>left operand</parameter> s pouitm
argumentu <parameter>modulus</parameter>.
</para>
<para>
Viz tak <function>bcdiv</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.bcmul">
<refnamediv>
<refname>bcmul</refname>
<refpurpose>Vynsobit dv sla s libovolnou pesnost</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcmul</methodname>
<methodparam><type>string</type><parameter>left operand</parameter></methodparam>
<methodparam><type>string</type><parameter>right operand</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Vynsob argument <parameter>left operand</parameter> argumentem
<parameter>right operand</parameter> a vrt vsledek.
Voliteln argument <parameter>scale</parameter> se pouv k
uren potu desetinnch mst ve vsledku.
</para>
<para>
Viz tak <function>bcdiv</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.bcpow">
<refnamediv>
<refname>bcpow</refname>
<refpurpose>
Umocnit jedno slo na jin s libovolnou pesnost
</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcpow</methodname>
<methodparam><type>string</type><parameter>x</parameter></methodparam>
<methodparam><type>string</type><parameter>y</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Umocn <parameter>x</parameter> na <parameter>y</parameter>.
Voliteln argument <parameter>scale</parameter> se pouv k
uren potu desetinnch mst ve vsledku.
</para>
<para>
Viz tak <function>bcsqrt</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.bcscale">
<refnamediv>
<refname>bcscale</refname>
<refpurpose>Nastavit vchoz klu pro vechny bc math funkce
</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcscale</methodname>
<methodparam><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Tato funkce nastav vchoz klu pro vechna nsledn voln
bc math funkc, ktera neudvaj explicitn klu pesnosti.
</para>
</refsect1>
</refentry>
<refentry id="function.bcsqrt">
<refnamediv>
<refname>bcsqrt</refname>
<refpurpose>
Zskat druhou odmocninu sla s libovolnou pesnost
</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcsqrt</methodname>
<methodparam><type>string</type><parameter>operand</parameter></methodparam>
<methodparam><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Vrt druhou odmocninu argumentu <parameter>operand</parameter>.
Voliteln argument <parameter>scale</parameter> se pouv k
uren potu desetinnch mst ve vsledku.
</para>
<para>
Viz tak <function>bcpow</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.bcsub">
<refnamediv>
<refname>bcsub</refname>
<refpurpose>
Odest jedno slo od druhho s libovolnou pesnost
</refpurpose>
</refnamediv>
<refsect1>
<title>Popis</title>
<methodsynopsis>
<type>string</type><methodname>bcsub</methodname>
<methodparam><type>string</type><parameter>left operand</parameter></methodparam>
<methodparam><type>string</type><parameter>right operand</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>scale</parameter></methodparam>
</methodsynopsis>
<para>
Odete argument <parameter>right operand</parameter> od argumentu
<parameter>left operand</parameter> a vrt vsledek v etzci.
Voliteln argument <parameter>scale</parameter> se pouv k
uren potu desetinnch mst ve vsledku.
</para>
<para>
Viz tak <function>bcadd</function>.
</para>
</refsect1>
</refentry>
</reference>
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