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| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="math_toolkit.number_series.primes"></a><a class="link" href="primes.html" title="Prime Numbers">Prime Numbers</a> |
| </h3></div></div></div> |
| <h5> |
| <a name="math_toolkit.number_series.primes.h0"></a> |
| <span class="phrase"><a name="math_toolkit.number_series.primes.synopsis"></a></span><a class="link" href="primes.html#math_toolkit.number_series.primes.synopsis">Synopsis</a> |
| </h5> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">special_functions</span><span class="special">/</span><span class="identifier">prime</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| </pre> |
| <pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">math</span> <span class="special">{</span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Policy</span><span class="special">></span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint32_t</span> <span class="identifier">prime</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="identifier">n</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">Policy</span><span class="special">&</span> <span class="identifier">pol</span><span class="special">);</span> |
| |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint32_t</span> <span class="identifier">prime</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="identifier">n</span><span class="special">);</span> |
| |
| <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">unsigned</span> <span class="identifier">max_prime</span> <span class="special">=</span> <span class="number">10000</span><span class="special">;</span> |
| |
| <span class="special">}}</span> <span class="comment">// namespaces</span> |
| </pre> |
| <h5> |
| <a name="math_toolkit.number_series.primes.h1"></a> |
| <span class="phrase"><a name="math_toolkit.number_series.primes.description"></a></span><a class="link" href="primes.html#math_toolkit.number_series.primes.description">Description</a> |
| </h5> |
| <p> |
| The function <code class="computeroutput"><span class="identifier">prime</span></code> provides |
| fast table lookup to the first 10000 prime numbers (starting from 2 as the |
| zeroth prime: as 1 isn't terribly useful in practice). There are two function |
| signatures one of which takes an optional <a class="link" href="../../policy.html" title="Chapter 14. Policies: Controlling Precision, Error Handling etc">Policy</a> |
| as the second parameter to control error handling. |
| </p> |
| <p> |
| The constant <code class="computeroutput"><span class="identifier">max_prime</span></code> is |
| the largest value you can pass to <code class="computeroutput"><span class="identifier">prime</span></code> |
| without incurring an error. |
| </p> |
| <p> |
| Passing a value greater than <code class="computeroutput"><span class="identifier">max_prime</span></code> |
| results in a <a class="link" href="../error_handling.html#math_toolkit.error_handling.domain_error">domain_error</a> |
| being raised. |
| </p> |
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