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+ ISO C++
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+ ISO C++
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+ "><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="numerics.html" title="Chapter 12. Numerics"><link rel="prev" href="generalized_numeric_operations.html" title="Generalized Operations"><link rel="next" href="io.html" title="Chapter 13. Input and Output"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Interacting with C</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="generalized_numeric_operations.html">Prev</a> </td><th width="60%" align="center">Chapter 12.
Numerics
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align="right"> <a accesskey="n" href="io.html">Next</a></td></tr></table><hr/></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title"><a id="std.numerics.c"/>Interacting with C</h2></div></div></div><div class="section" title="Numerics vs. Arrays"><div class="titlepage"><div><div><h3 class="title"><a id="numerics.c.array"/>Numerics vs. Arrays</h3></div></div></div><p>One of the major reasons why FORTRAN can chew through numbers so well
+</th><td
width="20%" align="right"> <a accesskey="n" href="io.html">Next</a></td></tr></table><hr></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.numerics.c"></a>Interacting with C</h2></div></div></div><div class="section" title="Numerics vs. Arrays"><div class="titlepage"><div><div><h3 class="title"><a name="numerics.c.array"></a>Numerics vs. Arrays</h3></div></div></div><p>One of the major reasons why FORTRAN can chew through numbers so well
is that it is defined to be free of pointer aliasing, an assumption
that C89 is not allowed to make, and neither is C++98. C99 adds a new
keyword, <code class="code">restrict</code>, to apply to individual pointers. The
speaking this is only one of the five template classes, and they are
designed to be familiar to people who have worked with the BLAS
libraries before.
- </p></div><div class="section" title="C99"><div class="titlepage"><div><div><h3 class="title"><a
id="numerics.c.c99"/>C99</h3></div></div></div><p>In addition to the other topics on this page, we'll note here some
+ </p></div><div class="section" title="C99"><div class="titlepage"><div><div><h3 class="title"><a
name="numerics.c.c99"></a>C99</h3></div></div></div><p>In addition to the other topics on this page, we'll note here some
of the C99 features that appear in libstdc++.
</p><p>The C99 features depend on the <code class="code">--enable-c99</code> configure flag.
This flag is already on by default, but it can be disabled by the
are supported, as is the <code class="code">lldiv_t</code> typedef. Also supported
are the wide character functions using 'long long', like
<code class="code">wcstoll</code>.
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+ </p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="generalized_numeric_operations.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="numerics.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="io.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Generalized Operations </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 13.
Input and Output
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