35 lines
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2.2 KiB
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35 lines
No EOL
2.2 KiB
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<title>Math.abs — Ludic</title>
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<meta name="description" content="The magnitude of a value, dropping its sign.">
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<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
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<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-math.html">Math</a> <span>›</span> <span class="here">Math.abs</span></div>
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<div class="item-head">
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<span class="kind-badge kind-method">method</span>
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<h1 id="top">Math.abs</h1>
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</div>
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<code class="sig">Math.abs(x) -> int</code>
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<div class="desc"><p>Returns the absolute value of <code>x</code> — its distance from zero, always non-negative. It preserves the type of its argument, so <code>Math.abs</code> of a <code>fixed</code> stays <code>fixed</code>. Reach for it when you care about how far apart two things are regardless of direction, such as the gap between a target and current position, or the speed behind a signed velocity. The bare form <code>abs(x)</code> is kept as a convenience alias.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-x"><code class="pname">x</code><span class="pdesc">the value whose magnitude you want</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program ChaseDistance {
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var target: int = 40
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var here: int = 12
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handler Report phase Update {
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let gap = Math.abs(target - here) # 28, regardless of which is larger
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}
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}</pre></div>
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