<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="guide" id="function" lang="bg">

    <info>
        <link type="guide" xref="index#equation"/>
    </info>

	<title>Функции</title>
    
    <p>Функциите могат да се използват, като се въведе името на функцията, последвано от аргументи на функцията. „<app>Калкулатор</app>“ поддържа и функции, дефинирани от потребителя. Ако аргументът не е число или <link xref="variable">единствена променлива</link>, тогава запишете всеки аргумент, отделен с точка и запетая, и използвайте скоби около списъка с аргументи.</p>
    <example>
    <p its:locNote="Translators: Do not translate the word 'sin'!">sin 30</p>
    <p its:locNote="Translators: Do not translate the word 'abs'!">abs (5−9)</p>
    <p its:locNote="Translators: Do not translate the word 'fun'!">fun (9;10)</p>
    </example>
    <p>
    To add a new function type the function in the format as given below. A function name and arguments must only contain upper or lower case characters, or underscores. The part after @ is the function description which is optional.
    </p>
    <example>
    <p>SimpleInterest (главница; лихвен процент; време) = главница * лихвен процент * време @ Формула за проста лихва</p>
    </example>
    <p>Функции могат да се добавят и вмъкват и чрез бутона f(x).</p>
    <example>
    <p>Натиснете върху f(x). Въведете името на функцията в полето, изберете броя на аргументите и натиснете върху бутона със знак плюс до него. На екрана на калкулатора въведете израза на функцията и натиснете <key>Enter</key>.</p>
    </example>
    <example>
    <p>Натиснете върху f(x). Изберете функцията и натиснете върху нея.</p>
    </example>
    <p>Дефинирани са следните функции.</p>
    <table>
    <tr>
    <td colspan="2"><p>Тригонометрия</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sin</p></td>
    <td><p><link xref="trigonometry">Синус</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cos</p></td>
    <td><p><link xref="trigonometry">Косинус</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tan</p></td>
    <td><p><link xref="trigonometry">Тангенс</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sin⁻¹ / asin</p></td>
    <td><p><link xref="trigonometry">Inverse Sine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cos⁻¹ / acos</p></td>
    <td><p><link xref="trigonometry">Inverse Cosine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tan⁻¹ / atan</p></td>
    <td><p><link xref="trigonometry">Inverse Tangent</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sinh</p></td>
    <td><p><link xref="trigonometry">Хиперболичен синус</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cosh</p></td>
    <td><p><link xref="trigonometry">Хиперболичен косинус</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tanh</p></td>
    <td><p><link xref="trigonometry">Хиперболичен тангенс</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sinh⁻¹ / asinh</p></td>
    <td><p><link xref="trigonometry">Inverse Hyperbolic Sine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cosh⁻¹ / acosh</p></td>
    <td><p><link xref="trigonometry">Inverse Hyperbolic Cosine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tanh⁻¹ / atanh</p></td>
    <td><p><link xref="trigonometry">Inverse Hyperbolic Tangent</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Complex</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">conj</p></td>
    <td><p><link xref="complex">Complex Conjugate</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">arg</p></td>
    <td><p><link xref="complex">Complex Argument</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">re</p></td>
    <td><p><link xref="complex">Real Component</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">im</p></td>
    <td><p><link xref="complex">Imaginary Component</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Програмиране</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">twos</p></td>
    <td><p><link xref="mode-programming">Two’s Complement</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">bswap</p></td>
    <td><p><link xref="mode-programming">Swap Endianness</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">mod</p></td>
    <td><p><link xref="modulus">Modulus Divide</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">modexp</p></td>
    <td><p><link xref="modulus">Modular Exponentiation</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Rounding</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">round</p></td>
    <td><p><link xref="rounding">Round</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">floor</p></td>
    <td><p><link xref="rounding">Floor</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">ceil</p></td>
    <td><p><link xref="rounding">Ceiling</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">int</p></td>
    <td><p><link xref="rounding">Integer Component</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">frac</p></td>
    <td><p><link xref="rounding">Fractional Component</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Statistics</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sum</p></td>
    <td><p>Sum</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sumsq</p></td>
    <td><p>Sum of Squares</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">average</p></td>
    <td><p>Average</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">median</p></td>
    <td><p>Median</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">min</p></td>
    <td><p>Minimum Value</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">max</p></td>
    <td><p>Maximum Value</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">stdev</p></td>
    <td><p>Sample Standard Deviation</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">stdevp</p></td>
    <td><p>Population Standard Deviation</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">var</p></td>
    <td><p>Sample Variance</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">varp</p></td>
    <td><p>Population Variance</p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Sundry</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">log</p></td>
    <td><p><link xref="logarithm">Логаритъм</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">ln</p></td>
    <td><p><link xref="logarithm">Натурален логаритъм</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sqrt</p></td>
    <td><p><link xref="power">Корен квадратен</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">abs</p></td>
    <td><p><link xref="absolute">Абсолютна стойност</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sgn</p></td>
    <td><p><link xref="absolute">Signum</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">ncr</p></td>
    <td><p>Combination</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">npr</p></td>
    <td><p>Permutation</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">gcd</p></td>
    <td><p>Greatest Common Divisor</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">lcm</p></td>
    <td><p>Least Common Multiple</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cmp</p></td>
    <td><p>Comparison (Kronecker Delta)</p></td>
    </tr>
    </table>
</page>
