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<h1><a href="../../">wren</a></h1>
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<h2>a classy little scripting language</h2>
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<h2>core classes</h2>
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<td colspan="2"><h2>core classes</h2></td>
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<h1>Num Class</h1>
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<h2>Static Methods <a href="#static-methods" name="static-methods" class="header-anchor">#</a></h2>
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<h3>Num.<strong>fromString</strong>(value) <a href="#num.fromstring(value)" name="num.fromstring(value)" class="header-anchor">#</a></h3>
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<p>Attempts to parse <code>value</code> as a decimal literal and return it as an instance of
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<code>Num</code>. If the number cannot be parsed <code>null</code> will be returned.</p>
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<p>It is a runtime error if <code>value</code> is not a string.</p>
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<h3>Num.<strong>pi</strong> <a href="#num.pi" name="num.pi" class="header-anchor">#</a></h3>
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<p>The value of π.</p>
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<h3>Num.<strong>largest</strong> <a href="#num.largest" name="num.largest" class="header-anchor">#</a></h3>
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<p>The largest representable numeric value.</p>
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<h3>Num.<strong>smallest</strong> <a href="#num.smallest" name="num.smallest" class="header-anchor">#</a></h3>
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<p>The smallest positive representable numeric value.</p>
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<h2>Methods <a href="#methods" name="methods" class="header-anchor">#</a></h2>
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<h3><strong>abs</strong> <a href="#abs" name="abs" class="header-anchor">#</a></h3>
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<p>The absolute value of the number.</p>
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<pre class="snippet">
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System.print( (-123).abs ) //> 123
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</pre>
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<h3><strong>acos</strong> <a href="#acos" name="acos" class="header-anchor">#</a></h3>
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<p>The arc cosine of the number.</p>
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<h3><strong>asin</strong> <a href="#asin" name="asin" class="header-anchor">#</a></h3>
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<p>The arc sine of the number.</p>
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<h3><strong>atan</strong> <a href="#atan" name="atan" class="header-anchor">#</a></h3>
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<p>The arc tangent of the number.</p>
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<h3><strong>atan</strong>(x) <a href="#atan(x)" name="atan(x)" class="header-anchor">#</a></h3>
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<p>The arc tangent of the number when divided by <code>x</code>, using the signs of the two
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numbers to determine the quadrant of the result.</p>
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<h3><strong>ceil</strong> <a href="#ceil" name="ceil" class="header-anchor">#</a></h3>
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<p>Rounds the number up to the nearest integer.</p>
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<pre class="snippet">
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System.print(1.5.ceil) //> 2
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System.print((-3.2).ceil) //> -3
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</pre>
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<h3><strong>cos</strong> <a href="#cos" name="cos" class="header-anchor">#</a></h3>
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<p>The cosine of the number.</p>
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<h3><strong>floor</strong> <a href="#floor" name="floor" class="header-anchor">#</a></h3>
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<p>Rounds the number down to the nearest integer.</p>
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<pre class="snippet">
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System.print(1.5.floor) //> 1
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System.print((-3.2).floor) //> -4
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</pre>
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<h3><strong>isInfinity</strong> <a href="#isinfinity" name="isinfinity" class="header-anchor">#</a></h3>
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<p>Whether the number is positive or negative infinity or not.</p>
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<pre class="snippet">
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System.print(99999.isInfinity) //> false
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System.print((1/0).isInfinity) //> true
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</pre>
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<h3><strong>isInteger</strong> <a href="#isinteger" name="isinteger" class="header-anchor">#</a></h3>
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<p>Whether the number is an integer or has some fractional component.</p>
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<pre class="snippet">
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System.print(2.isInteger) //> true
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System.print(2.3.isInteger) //> false
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</pre>
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<h3><strong>isNan</strong> <a href="#isnan" name="isnan" class="header-anchor">#</a></h3>
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<p>Whether the number is <a href="http://en.wikipedia.org/wiki/NaN">not a number</a>. This is
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<code>false</code> for normal number values and infinities, and <code>true</code> for the result of
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<code>0/0</code>, the square root of a negative number, etc.</p>
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<h3><strong>log</strong> <a href="#log" name="log" class="header-anchor">#</a></h3>
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<p>The natural logarithm of the number.</p>
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<h3><strong>pow</strong>(power) <a href="#pow(power)" name="pow(power)" class="header-anchor">#</a></h3>
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<p>Raises this number (the base) to <code>power</code>. Returns <code>nan</code> if the base is negative.</p>
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<h3><strong>round</strong> <a href="#round" name="round" class="header-anchor">#</a></h3>
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<p>Rounds the number to the nearest integer.</p>
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<pre class="snippet">
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System.print(1.5.round) //> 2
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System.print((-3.2).round) //> -3
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System.print((-3.7).round) //> -4
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</pre>
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<h3><strong>sign</strong> <a href="#sign" name="sign" class="header-anchor">#</a></h3>
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<p>The sign of the number, expressed as a -1, 1 or 0, for negative and positive numbers, and zero.</p>
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<h3><strong>sin</strong> <a href="#sin" name="sin" class="header-anchor">#</a></h3>
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<p>The sine of the number.</p>
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<h3><strong>sqrt</strong> <a href="#sqrt" name="sqrt" class="header-anchor">#</a></h3>
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<p>The square root of the number. Returns <code>nan</code> if the number is negative.</p>
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<h3><strong>tan</strong> <a href="#tan" name="tan" class="header-anchor">#</a></h3>
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<p>The tangent of the number.</p>
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<h3><strong>-</strong> operator <a href="#--operator" name="--operator" class="header-anchor">#</a></h3>
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<p>Negates the number.</p>
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<pre class="snippet">
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var a = 123
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System.print(-a) //> -123
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</pre>
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<h3><strong>-</strong>(other), <strong>+</strong>(other), <strong>/</strong>(other), <strong>*</strong>(other) operators <a href="#-(other),-+(other),-(other),-\(other)-operators" name="-(other),-+(other),-(other),-\(other)-operators" class="header-anchor">#</a></h3>
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<p>The usual arithmetic operators you know and love. All of them do 64-bit
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floating point arithmetic. It is a runtime error if the right-hand operand is
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not a number. Wren doesn’t roll with implicit conversions.</p>
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<h3><strong>%</strong>(denominator) operator <a href="#%(denominator)-operator" name="%(denominator)-operator" class="header-anchor">#</a></h3>
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<p>Also known as mod or modulus. <br />
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The floating-point remainder of this number divided by <code>denominator</code>. </p>
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<p>The returned value has the same sign as <code>this</code> (internally calls <code>fmod</code> from C).</p>
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<p>It is a runtime error if <code>denominator</code> is not a number.</p>
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<h3><strong><</strong>(other), <strong>></strong>(other), <strong><=</strong>(other), <strong>>=</strong>(other) operators <a href="#<(other),->(other),-<=(other),->=(other)-operators" name="<(other),->(other),-<=(other),->=(other)-operators" class="header-anchor">#</a></h3>
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<p>Compares this and <code>other</code>, returning <code>true</code> or <code>false</code> based on how the numbers
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are ordered. It is a runtime error if <code>other</code> is not a number.</p>
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<h3><strong>~</strong> operator <a href="#~-operator" name="~-operator" class="header-anchor">#</a></h3>
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<p>Performs <em>bitwise</em> negation on the number. The number is first converted to a
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32-bit unsigned value, which will truncate any floating point value. The bits
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of the result of that are then negated, yielding the result.</p>
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<h3><strong>&</strong>(other) operator <a href="#&(other)-operator" name="&(other)-operator" class="header-anchor">#</a></h3>
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<p>Performs bitwise and on the number. Both numbers are first converted to 32-bit
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unsigned values. The result is then a 32-bit unsigned number where each bit is
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<code>true</code> only where the corresponding bits of both inputs were <code>true</code>.</p>
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<p>It is a runtime error if <code>other</code> is not a number.</p>
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<h3><strong>|</strong>(other) operator <a href="#|(other)-operator" name="|(other)-operator" class="header-anchor">#</a></h3>
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<p>Performs bitwise or on the number. Both numbers are first converted to 32-bit
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unsigned values. The result is then a 32-bit unsigned number where each bit is
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<code>true</code> only where the corresponding bits of one or both inputs were <code>true</code>.</p>
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<p>It is a runtime error if <code>other</code> is not a number.</p>
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<h3><strong>..</strong>(other) operator <a href="#..(other)-operator" name="..(other)-operator" class="header-anchor">#</a></h3>
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<p>Creates a <a href="range.html">Range</a> representing a consecutive range of numbers
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from the beginning number to the ending number.</p>
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<pre class="snippet">
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var range = 1.2..3.4
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System.print(range.min) //> 1.2
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System.print(range.max) //> 3.4
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System.print(range.isInclusive) //> true
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</pre>
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<h3><strong>…</strong>(other) operator <a href="#...(other)-operator" name="...(other)-operator" class="header-anchor">#</a></h3>
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<p>Creates a <a href="range.html">Range</a> representing a consecutive range of numbers
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from the beginning number to the ending number not including the ending number.</p>
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<pre class="snippet">
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var range = 1.2...3.4
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System.print(range.min) //> 1.2
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System.print(range.max) //> 3.4
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System.print(range.isInclusive) //> false
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</pre>
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<p>Wren lives
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<a href="https://github.com/wren-lang/wren">on GitHub</a>
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— Made with ❤ by
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<a href="http://journal.stuffwithstuff.com/">Bob Nystrom</a> and
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<a href="https://github.com/wren-lang/wren/blob/master/AUTHORS">friends</a>.
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