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<link title="Weak" rel="Chapter" href="Weak.html"><title>Int32</title>
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<center><h1>Module <a href="type_Int32.html">Int32</a></h1></center>
<br>
<pre><span class="keyword">module</span> Int32: <code class="type">sig end</code></pre><div class="info">
32-bit integers.
<p>
This module provides operations on the type <code class="code">int32</code>
of signed 32-bit integers. Unlike the built-in <code class="code">int</code> type,
the type <code class="code">int32</code> is guaranteed to be exactly 32-bit wide on all
platforms. All arithmetic operations over <code class="code">int32</code> are taken
modulo 2<sup class="superscript">32</sup>.
<p>
Performance notice: values of type <code class="code">int32</code> occupy more memory
space than values of type <code class="code">int</code>, and arithmetic operations on
<code class="code">int32</code> are generally slower than those on <code class="code">int</code>. Use <code class="code">int32</code>
only when the application requires exact 32-bit arithmetic.<br>
</div>
<hr width="100%">
<pre><span class="keyword">val</span> <a name="VALzero"></a>zero : <code class="type">int32</code></pre><div class="info">
The 32-bit integer 0.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALone"></a>one : <code class="type">int32</code></pre><div class="info">
The 32-bit integer 1.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALminus_one"></a>minus_one : <code class="type">int32</code></pre><div class="info">
The 32-bit integer -1.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALneg"></a>neg : <code class="type">int32 -> int32</code></pre><div class="info">
Unary negation.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALadd"></a>add : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Addition.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALsub"></a>sub : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Subtraction.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALmul"></a>mul : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Multiplication.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALdiv"></a>div : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Integer division. Raise <code class="code"><span class="constructor">Division_by_zero</span></code> if the second
argument is zero. This division rounds the real quotient of
its arguments towards zero, as specified for <a href="Pervasives.html#VAL(/)"><code class="code"><span class="constructor">Pervasives</span>.(/)</code></a>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALrem"></a>rem : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Integer remainder. If <code class="code">y</code> is not zero, the result
of <code class="code"><span class="constructor">Int32</span>.rem x y</code> satisfies the following properties:
<code class="code"><span class="constructor">Int32</span>.zero <= <span class="constructor">Int32</span>.rem x y < <span class="constructor">Int32</span>.abs y</code> and
<code class="code">x = <span class="constructor">Int32</span>.add (<span class="constructor">Int32</span>.mul (<span class="constructor">Int32</span>.div x y) y) (<span class="constructor">Int32</span>.rem x y)</code>.
If <code class="code">y = 0</code>, <code class="code"><span class="constructor">Int32</span>.rem x y</code> raises <code class="code"><span class="constructor">Division_by_zero</span></code>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALsucc"></a>succ : <code class="type">int32 -> int32</code></pre><div class="info">
Successor. <code class="code"><span class="constructor">Int32</span>.succ x</code> is <code class="code"><span class="constructor">Int32</span>.add x <span class="constructor">Int32</span>.one</code>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALpred"></a>pred : <code class="type">int32 -> int32</code></pre><div class="info">
Predecessor. <code class="code"><span class="constructor">Int32</span>.pred x</code> is <code class="code"><span class="constructor">Int32</span>.sub x <span class="constructor">Int32</span>.one</code>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALabs"></a>abs : <code class="type">int32 -> int32</code></pre><div class="info">
Return the absolute value of its argument.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALmax_int"></a>max_int : <code class="type">int32</code></pre><div class="info">
The greatest representable 32-bit integer, 2<sup class="superscript">31</sup> - 1.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALmin_int"></a>min_int : <code class="type">int32</code></pre><div class="info">
The smallest representable 32-bit integer, -2<sup class="superscript">31</sup>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALlogand"></a>logand : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Bitwise logical and.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALlogor"></a>logor : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Bitwise logical or.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALlogxor"></a>logxor : <code class="type">int32 -> int32 -> int32</code></pre><div class="info">
Bitwise logical exclusive or.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALlognot"></a>lognot : <code class="type">int32 -> int32</code></pre><div class="info">
Bitwise logical negation<br>
</div>
<pre><span class="keyword">val</span> <a name="VALshift_left"></a>shift_left : <code class="type">int32 -> int -> int32</code></pre><div class="info">
<code class="code"><span class="constructor">Int32</span>.shift_left x y</code> shifts <code class="code">x</code> to the left by <code class="code">y</code> bits.
The result is unspecified if <code class="code">y < 0</code> or <code class="code">y >= 32</code>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALshift_right"></a>shift_right : <code class="type">int32 -> int -> int32</code></pre><div class="info">
<code class="code"><span class="constructor">Int32</span>.shift_right x y</code> shifts <code class="code">x</code> to the right by <code class="code">y</code> bits.
This is an arithmetic shift: the sign bit of <code class="code">x</code> is replicated
and inserted in the vacated bits.
The result is unspecified if <code class="code">y < 0</code> or <code class="code">y >= 32</code>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALshift_right_logical"></a>shift_right_logical : <code class="type">int32 -> int -> int32</code></pre><div class="info">
<code class="code"><span class="constructor">Int32</span>.shift_right_logical x y</code> shifts <code class="code">x</code> to the right by <code class="code">y</code> bits.
This is a logical shift: zeroes are inserted in the vacated bits
regardless of the sign of <code class="code">x</code>.
The result is unspecified if <code class="code">y < 0</code> or <code class="code">y >= 32</code>.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALof_int"></a>of_int : <code class="type">int -> int32</code></pre><div class="info">
Convert the given integer (type <code class="code">int</code>) to a 32-bit integer (type <code class="code">int32</code>).<br>
</div>
<pre><span class="keyword">val</span> <a name="VALto_int"></a>to_int : <code class="type">int32 -> int</code></pre><div class="info">
Convert the given 32-bit integer (type <code class="code">int32</code>) to an
integer (type <code class="code">int</code>). On 32-bit platforms, the 32-bit integer
is taken modulo 2<sup class="superscript">31</sup>, i.e. the high-order bit is lost
during the conversion. On 64-bit platforms, the conversion
is exact.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALof_float"></a>of_float : <code class="type">float -> int32</code></pre><div class="info">
Convert the given floating-point number to a 32-bit integer,
discarding the fractional part (truncate towards 0).
The result of the conversion is undefined if, after truncation,
the number is outside the range [<a href="Int32.html#VALmin_int"><code class="code"><span class="constructor">Int32</span>.min_int</code></a>, <a href="Int32.html#VALmax_int"><code class="code"><span class="constructor">Int32</span>.max_int</code></a>].<br>
</div>
<pre><span class="keyword">val</span> <a name="VALto_float"></a>to_float : <code class="type">int32 -> float</code></pre><div class="info">
Convert the given 32-bit integer to a floating-point number.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALof_string"></a>of_string : <code class="type">string -> int32</code></pre><div class="info">
Convert the given string to a 32-bit integer.
The string is read in decimal (by default) or in hexadecimal,
octal or binary if the string begins with <code class="code">0x</code>, <code class="code">0o</code> or <code class="code">0b</code>
respectively.
Raise <code class="code"><span class="constructor">Failure</span> <span class="string">"int_of_string"</span></code> if the given string is not
a valid representation of an integer.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALto_string"></a>to_string : <code class="type">int32 -> string</code></pre><div class="info">
Return the string representation of its argument, in signed decimal.<br>
</div>
<pre><span class="keyword">val</span> <a name="VALformat"></a>format : <code class="type">string -> int32 -> string</code></pre><div class="info">
<code class="code"><span class="constructor">Int32</span>.format fmt n</code> return the string representation of the
32-bit integer <code class="code">n</code> in the format specified by <code class="code">fmt</code>.
<code class="code">fmt</code> is a <code class="code"><span class="constructor">Printf</span></code>-style format containing exactly
one <code class="code">%d</code>, <code class="code">%i</code>, <code class="code">%u</code>, <code class="code">%x</code>, <code class="code">%<span class="constructor">X</span></code> or <code class="code">%o</code> conversion specification.
This function is deprecated; use <a href="Printf.html#VALsprintf"><code class="code"><span class="constructor">Printf</span>.sprintf</code></a> with a <code class="code">%lx</code> format
instead.<br>
</div>
<br><code><span class="keyword">type</span> <a name="TYPEt"></a>t = <code class="type">int32</code> </code>
<div class="info">
An alias for the type of 32-bit integers.<br>
</div>
<br>
<pre><span class="keyword">val</span> <a name="VALcompare"></a>compare : <code class="type"><a href="Int32.html#TYPEt">t</a> -> <a href="Int32.html#TYPEt">t</a> -> int</code></pre><div class="info">
The comparison function for 32-bit integers, with the same specification as
<a href="Pervasives.html#VALcompare"><code class="code"><span class="constructor">Pervasives</span>.compare</code></a>. Along with the type <code class="code">t</code>, this function <code class="code">compare</code>
allows the module <code class="code"><span class="constructor">Int32</span></code> to be passed as argument to the functors
<a href="Set.Make.html"><code class="code"><span class="constructor">Set</span>.<span class="constructor">Make</span></code></a> and <a href="Map.Make.html"><code class="code"><span class="constructor">Map</span>.<span class="constructor">Make</span></code></a>.<br>
</div>
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