163 lines
6.2 KiB
HTML
163 lines
6.2 KiB
HTML
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<html lang="en">
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<head>
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<title>Arithmetic In Guile - Debugging with GDB</title>
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<meta name="description" content="Debugging with GDB">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Guile-API.html#Guile-API" title="Guile API">
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<link rel="prev" href="Values-From-Inferior-In-Guile.html#Values-From-Inferior-In-Guile" title="Values From Inferior In Guile">
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<link rel="next" href="Types-In-Guile.html#Types-In-Guile" title="Types In Guile">
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</head>
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<body>
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<div class="node">
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<a name="Arithmetic-In-Guile"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Types-In-Guile.html#Types-In-Guile">Types In Guile</a>,
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Previous: <a rel="previous" accesskey="p" href="Values-From-Inferior-In-Guile.html#Values-From-Inferior-In-Guile">Values From Inferior In Guile</a>,
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Up: <a rel="up" accesskey="u" href="Guile-API.html#Guile-API">Guile API</a>
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<hr>
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</div>
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<h5 class="subsubsection">23.3.3.6 Arithmetic In Guile</h5>
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<p>The <code>(gdb)</code> module provides several functions for performing
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arithmetic on <code><gdb:value></code> objects.
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The arithmetic is performed as if it were done by the target,
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and therefore has target semantics which are not necessarily
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those of Scheme. For example operations work with a fixed precision,
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not the arbitrary precision of Scheme.
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<p>Wherever a function takes an integer or pointer as an operand,
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<span class="sc">gdb</span> will convert appropriate Scheme values to perform
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the operation.
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<div class="defun">
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— Scheme Procedure: <b>value-add</b><var> a b<a name="index-value_002dadd-2512"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-sub</b><var> a b<a name="index-value_002dsub-2513"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-mul</b><var> a b<a name="index-value_002dmul-2514"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-div</b><var> a b<a name="index-value_002ddiv-2515"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-rem</b><var> a b<a name="index-value_002drem-2516"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-mod</b><var> a b<a name="index-value_002dmod-2517"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-pow</b><var> a b<a name="index-value_002dpow-2518"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-not</b><var> a<a name="index-value_002dnot-2519"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-neg</b><var> a<a name="index-value_002dneg-2520"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-pos</b><var> a<a name="index-value_002dpos-2521"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-abs</b><var> a<a name="index-value_002dabs-2522"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-lsh</b><var> a b<a name="index-value_002dlsh-2523"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-rsh</b><var> a b<a name="index-value_002drsh-2524"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-min</b><var> a b<a name="index-value_002dmin-2525"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-max</b><var> a b<a name="index-value_002dmax-2526"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-lognot</b><var> a<a name="index-value_002dlognot-2527"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-logand</b><var> a b<a name="index-value_002dlogand-2528"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-logior</b><var> a b<a name="index-value_002dlogior-2529"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value-logxor</b><var> a b<a name="index-value_002dlogxor-2530"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value=?</b><var> a b<a name="index-value_003d_003f-2531"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value<?</b><var> a b<a name="index-value_003c_003f-2532"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value<=?</b><var> a b<a name="index-value_003c_003d_003f-2533"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value>?</b><var> a b<a name="index-value_003e_003f-2534"></a></var><br>
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</div>
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<div class="defun">
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— Scheme Procedure: <b>value>=?</b><var> a b<a name="index-value_003e_003d_003f-2535"></a></var><br>
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</div>
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<p>Scheme does not provide a <code>not-equal</code> function,
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and thus Guile support in <span class="sc">gdb</span> does not either.
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</body></html>
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