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<p>|| —
Logical OR operator.
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
Arithmetic operators perform operations of change-sign (negate), don't-change-sign, logical AND logical OR, add, subtract, multiply and divide. Note that a value or an expression may fall between two of these operators, either of which could take it as its left or right argument, as in
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a + b * c.<br />
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In such cases three rules apply:
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1. * and <span class="emphasis"><em>/</em></span> bind to their neighbors more strongly than + and −. Thus the above expression is taken as
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a + (b * c)<br />
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with * taking b and c and then + taking a and b * c.
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2. <span class="emphasis"><em>+</em></span> and <span class="emphasis"><em>−</em></span> bind more strongly than &&, which in turn is stronger than ||:
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a && b - c || d<br />
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is taken as
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(a && (b - c)) || d<br />
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3. When both operators bind equally strongly, the operations are done left to right:
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a - b - c<br />
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is taken as
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(a - b) - c<br />
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Parentheses may be used as above to force particular groupings.
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<div class="refsect1" title="Syntax">
<a id="id2737003"></a>
<h2>Syntax</h2>
<pre class="synopsis">a <span class="command"><strong>||</strong></span> b (logical OR; not audio-rate)</pre>
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where the arguments <span class="emphasis"><em>a</em></span> and <span class="emphasis"><em>b</em></span> may be further expressions.
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<div class="refsect1" title="See Also">
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<h2>See Also</h2>
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<a class="link" href="subtracts.html" title="-"><em class="citetitle">-</em></a>,
<a class="link" href="adds.html" title="+"><em class="citetitle">+</em></a>,
<a class="link" href="opand.html" title="&&"><em class="citetitle">&&</em></a>,
<a class="link" href="multiplies.html" title="*"><em class="citetitle">*</em></a>,
<a class="link" href="divides.html" title="/"><em class="citetitle">/</em></a>,
<a class="link" href="raises.html" title="^"><em class="citetitle">^</em></a>,
<a class="link" href="modulus.html" title="%"><em class="citetitle">%</em></a>
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