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Node:<a name="Expressions">Expressions</a>,

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<h2 class="chapter">Expressions</h2>



   <p>An <dfn>expression</dfn> specifies an address or numeric value. 

Whitespace may precede and/or follow an expression.



   <p>The result of an expression must be an absolute number, or else an offset into

a particular section.  If an expression is not absolute, and there is not

enough information when <code>as</code> sees the expression to know its

section, a second pass over the source program might be necessary to interpret

the expression--but the second pass is currently not implemented. 

<code>as</code> aborts with an error message in this situation.



<ul class="menu">

<li><a accesskey="1" href="Empty-Exprs.html#Empty%20Exprs">Empty Exprs</a>:                  Empty Expressions

<li><a accesskey="2" href="Integer-Exprs.html#Integer%20Exprs">Integer Exprs</a>:                Integer Expressions

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