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Previous: <a rel="previous" accesskey="p" href="Anonymous-Functions.html#Anonymous-Functions">Anonymous Functions</a>,
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<h4 class="subsection">11.10.3 Inline Functions</h4>
<p>An inline function is created from a string containing the function
body using the <code>inline</code> function. The following code defines the
function f(x) = x^2 + 2.
<pre class="example"> f = inline("x^2 + 2");
</pre>
<p class="noindent">After this it is possible to evaluate f at any x by
writing <code>f(x)</code>.
<!-- inline src/ov-fcn-inline.cc -->
<p><a name="doc_002dinline"></a>
<div class="defun">
— Built-in Function: <b>inline</b> (<var>str</var>)<var><a name="index-inline-795"></a></var><br>
— Built-in Function: <b>inline</b> (<var>str, arg1, <small class="dots">...</small></var>)<var><a name="index-inline-796"></a></var><br>
— Built-in Function: <b>inline</b> (<var>str, n</var>)<var><a name="index-inline-797"></a></var><br>
<blockquote><p>Create an inline function from the character string <var>str</var>.
If called with a single argument, the arguments of the generated
function are extracted from the function itself. The generated
function arguments will then be in alphabetical order. It should
be noted that i, and j are ignored as arguments due to the
ambiguity between their use as a variable or their use as an inbuilt
constant. All arguments followed by a parenthesis are considered
to be functions.
<p>If the second and subsequent arguments are character strings,
they are the names of the arguments of the function.
<p>If the second argument is an integer <var>n</var>, the arguments are
<code>"x"</code>, <code>"P1"</code>, <small class="dots">...</small>, <code>"P</code><var>N</var><code>"</code>.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dargnames.html#doc_002dargnames">argnames</a>, <a href="doc_002dformula.html#doc_002dformula">formula</a>, <a href="doc_002dvectorize.html#doc_002dvectorize">vectorize</a>.
</p></blockquote></div>
<!-- argnames src/ov-fcn-inline.cc -->
<p><a name="doc_002dargnames"></a>
<div class="defun">
— Built-in Function: <b>argnames</b> (<var>fun</var>)<var><a name="index-argnames-798"></a></var><br>
<blockquote><p>Return a cell array of character strings containing the names of
the arguments of the inline function <var>fun</var>.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dinline.html#doc_002dinline">inline</a>, <a href="doc_002dformula.html#doc_002dformula">formula</a>, <a href="doc_002dvectorize.html#doc_002dvectorize">vectorize</a>.
</p></blockquote></div>
<!-- formula src/ov-fcn-inline.cc -->
<p><a name="doc_002dformula"></a>
<div class="defun">
— Built-in Function: <b>formula</b> (<var>fun</var>)<var><a name="index-formula-799"></a></var><br>
<blockquote><p>Return a character string representing the inline function <var>fun</var>.
Note that <code>char (</code><var>fun</var><code>)</code> is equivalent to
<code>formula (</code><var>fun</var><code>)</code>.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dargnames.html#doc_002dargnames">argnames</a>, <a href="doc_002dinline.html#doc_002dinline">inline</a>, <a href="doc_002dvectorize.html#doc_002dvectorize">vectorize</a>.
</p></blockquote></div>
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<p><a name="doc_002dsymvar"></a>
<div class="defun">
— Function File: <b>symvar</b> (<var>s</var>)<var><a name="index-symvar-800"></a></var><br>
<blockquote><p>Identify the argument names in the function defined by a string.
Common constant names such as <code>pi</code>, <code>NaN</code>, <code>Inf</code>,
<code>eps</code>, <code>i</code> or <code>j</code> are ignored. The arguments that are
found are returned in a cell array of strings. If no variables are
found then the returned cell array is empty.
</p></blockquote></div>
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