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| <h1>Module <code>math</code></h1> |
| |
| <p>Mathematical Functions.</p> |
| |
| |
| <p>This library is an interface to the standard C math library. |
| It provides all its functions inside the table math.</p> |
| |
| <h2><a id="#(math)" >Type <code>math</code></a></h2> |
| <table class="function_list"> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).abs">math.abs(x)</a></td> |
| <td class="summary"> |
| <p>Returns the absolute value of <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).acos">math.acos(x)</a></td> |
| <td class="summary"> |
| <p>Returns the arc cosine of <code>x</code> (in radians).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).asin">math.asin(x)</a></td> |
| <td class="summary"> |
| <p>Returns the arc sine of <code>x</code> (in radians).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).atan">math.atan(x)</a></td> |
| <td class="summary"> |
| <p>Returns the arc tangent of <code>x</code> (in radians).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).atan2">math.atan2(y, x)</a></td> |
| <td class="summary"> |
| <p>Returns the arc tangent of <code>y/x</code> (in radians), but uses the signs |
| of both parameters to find the quadrant of the result.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).ceil">math.ceil(x)</a></td> |
| <td class="summary"> |
| <p>Returns the smallest integer larger than or equal to <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).cos">math.cos(x)</a></td> |
| <td class="summary"> |
| <p>Returns the cosine of <code>x</code> (assumed to be in radians).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).cosh">math.cosh(x)</a></td> |
| <td class="summary"> |
| <p>Returns the hyperbolic cosine of <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).deg">math.deg(x)</a></td> |
| <td class="summary"> |
| <p>Returns the angle <code>x</code> (given in radians) in degrees.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).exp">math.exp(x)</a></td> |
| <td class="summary"> |
| <p>Returns the value <em>e^x</em>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).floor">math.floor(x)</a></td> |
| <td class="summary"> |
| <p>Returns the largest integer smaller than or equal to <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).fmod">math.fmod(x, y)</a></td> |
| <td class="summary"> |
| <p>Returns the remainder of the division of <code>x</code> by <code>y</code> that rounds the |
| quotient towards zero.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).frexp">math.frexp(x)</a></td> |
| <td class="summary"> |
| <p>Returns <code>m</code> and <code>e</code> such that <em>x = m2^e</em>, <code>e</code> is an integer and the |
| absolute value of <code>m</code> is in the range <em>[0.5, 1)</em> (or zero when <code>x</code> is zero).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).huge">math.huge</a></td> |
| <td class="summary"> |
| <p>The value <code>HUGE_VAL</code>, a value larger than or equal to any other |
| numerical value.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).ldexp">math.ldexp(m, e)</a></td> |
| <td class="summary"> |
| <p>Returns <em>m2^e</em> (<code>e</code> should be an integer).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).log">math.log(x)</a></td> |
| <td class="summary"> |
| <p>Returns the natural logarithm of <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).log10">math.log10(x)</a></td> |
| <td class="summary"> |
| <p>Returns the base-10 logarithm of <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).max">math.max(x)</a></td> |
| <td class="summary"> |
| <p>Returns the maximum value among its arguments.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).min">math.min(x)</a></td> |
| <td class="summary"> |
| <p>Returns the minimum value among its arguments.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).modf">math.modf(x)</a></td> |
| <td class="summary"> |
| <p>Returns two numbers, the integral part of <code>x</code> and the fractional part of |
| <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).pi">math.pi</a></td> |
| <td class="summary"> |
| <p>The value of <em>pi</em>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).pow">math.pow(x, y)</a></td> |
| <td class="summary"> |
| <p>Returns <em>x^y</em>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).rad">math.rad(x)</a></td> |
| <td class="summary"> |
| <p>Returns the angle <code>x</code> (given in degrees) in radians.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).random">math.random(m, n)</a></td> |
| <td class="summary"> |
| <p>This function is an interface to the simple pseudo-random generator |
| function <code>rand</code> provided by ANSI C.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).randomseed">math.randomseed(x)</a></td> |
| <td class="summary"> |
| <p>Sets <code>x</code> as the "seed" for the pseudo-random generator: equal seeds |
| produce equal sequences of numbers.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).sin">math.sin(x)</a></td> |
| <td class="summary"> |
| <p>Returns the sine of <code>x</code> (assumed to be in radians).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).sinh">math.sinh(x)</a></td> |
| <td class="summary"> |
| <p>Returns the hyperbolic sine of <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).sqrt">math.sqrt(x)</a></td> |
| <td class="summary"> |
| <p>Returns the square root of <code>x</code>.</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).tan">math.tan(x)</a></td> |
| <td class="summary"> |
| <p>Returns the tangent of <code>x</code> (assumed to be in radians).</p> |
| </td> |
| </tr> |
| <tr> |
| <td class="name" nowrap="nowrap"><a href="##(math).tanh">math.tanh(x)</a></td> |
| <td class="summary"> |
| <p>Returns the hyperbolic tangent of <code>x</code>.</p> |
| </td> |
| </tr> |
| </table> |
| |
| <h2><a id="#(math)" >Type <code>math</code></a></h2> |
| <h3>Field(s)</h3> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).abs" > |
| <strong>math.abs(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the absolute value of <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).acos" > |
| <strong>math.acos(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the arc cosine of <code>x</code> (in radians).</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).asin" > |
| <strong>math.asin(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the arc sine of <code>x</code> (in radians).</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).atan" > |
| <strong>math.atan(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the arc tangent of <code>x</code> (in radians).</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).atan2" > |
| <strong>math.atan2(y, x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the arc tangent of <code>y/x</code> (in radians), but uses the signs |
| of both parameters to find the quadrant of the result.</p> |
| |
| |
| <p>(It also handles |
| correctly the case of <code>x</code> being zero.)</p> |
| |
| <h3>Parameters</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number y </em></code>: </p> |
| |
| </li> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).ceil" > |
| <strong>math.ceil(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the smallest integer larger than or equal to <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).cos" > |
| <strong>math.cos(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the cosine of <code>x</code> (assumed to be in radians).</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).cosh" > |
| <strong>math.cosh(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the hyperbolic cosine of <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).deg" > |
| <strong>math.deg(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the angle <code>x</code> (given in radians) in degrees.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).exp" > |
| <strong>math.exp(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the value <em>e^x</em>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).floor" > |
| <strong>math.floor(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the largest integer smaller than or equal to <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).fmod" > |
| <strong>math.fmod(x, y)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the remainder of the division of <code>x</code> by <code>y</code> that rounds the |
| quotient towards zero.</p> |
| |
| <h3>Parameters</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| <li> |
| |
| <p><code><em>#number y </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).frexp" > |
| <strong>math.frexp(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns <code>m</code> and <code>e</code> such that <em>x = m2^e</em>, <code>e</code> is an integer and the |
| absolute value of <code>m</code> is in the range <em>[0.5, 1)</em> (or zero when <code>x</code> is zero).</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <em>#number</em> |
| <a id="#(math).huge" > |
| <strong>math.huge</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>The value <code>HUGE_VAL</code>, a value larger than or equal to any other |
| numerical value.</p> |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).ldexp" > |
| <strong>math.ldexp(m, e)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns <em>m2^e</em> (<code>e</code> should be an integer).</p> |
| |
| <h3>Parameters</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number m </em></code>: </p> |
| |
| </li> |
| <li> |
| |
| <p><code><em>#number e </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).log" > |
| <strong>math.log(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the natural logarithm of <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).log10" > |
| <strong>math.log10(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the base-10 logarithm of <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).max" > |
| <strong>math.max(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the maximum value among its arguments.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).min" > |
| <strong>math.min(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the minimum value among its arguments.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).modf" > |
| <strong>math.modf(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns two numbers, the integral part of <code>x</code> and the fractional part of |
| <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <em>#number</em> |
| <a id="#(math).pi" > |
| <strong>math.pi</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>The value of <em>pi</em>.</p> |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).pow" > |
| <strong>math.pow(x, y)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns <em>x^y</em>.</p> |
| |
| |
| <p>(You can also use the expression <code>x^y</code> to compute this |
| value.)</p> |
| |
| <h3>Parameters</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| <li> |
| |
| <p><code><em>#number y </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).rad" > |
| <strong>math.rad(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the angle <code>x</code> (given in degrees) in radians.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).random" > |
| <strong>math.random(m, n)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>This function is an interface to the simple pseudo-random generator |
| function <code>rand</code> provided by ANSI C.</p> |
| |
| |
| <p>(No guarantees can be given for its |
| statistical properties.)</p> |
| |
| <p>When called without arguments, returns a uniform pseudo-random real |
| number in the range <em>[0,1)</em>. When called with an integer number <code>m</code>, |
| <code>math.random</code> returns a uniform pseudo-random integer in the range <em>[1, |
| m]</em>. When called with two integer numbers <code>m</code> and <code>n</code>, <code>math.random</code> |
| returns a uniform pseudo-random integer in the range <em>[m, n]</em>.</p> |
| |
| <h3>Parameters</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number m </em></code>: </p> |
| |
| </li> |
| <li> |
| |
| <p><code><em>#number n </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).randomseed" > |
| <strong>math.randomseed(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Sets <code>x</code> as the "seed" for the pseudo-random generator: equal seeds |
| produce equal sequences of numbers.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).sin" > |
| <strong>math.sin(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the sine of <code>x</code> (assumed to be in radians).</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).sinh" > |
| <strong>math.sinh(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the hyperbolic sine of <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).sqrt" > |
| <strong>math.sqrt(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the square root of <code>x</code>.</p> |
| |
| |
| <p>(You can also use the expression <code>x^0.5</code> |
| to compute this value.)</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).tan" > |
| <strong>math.tan(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the tangent of <code>x</code> (assumed to be in radians).</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| <dl class="function"> |
| <dt> |
| <a id="#(math).tanh" > |
| <strong>math.tanh(x)</strong> |
| </a> |
| </dt> |
| <dd> |
| |
| <p>Returns the hyperbolic tangent of <code>x</code>.</p> |
| |
| <h3>Parameter</h3> |
| <ul> |
| <li> |
| |
| <p><code><em>#number x </em></code>: </p> |
| |
| </li> |
| </ul> |
| <h3>Return value</h3> |
| |
| <p><em>#number:</em></p> |
| |
| |
| </dd> |
| </dl> |
| |
| </div> |
| |
| </div> |
| </body> |
| </html> |
