boost-react-native-bundle
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Boost library as in https://sourceforge.net/projects/boost/files/boost/1.57.0/
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<title>BOOST_PP_SUB_D</title>
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The <b>BOOST_PP_SUB_D</b> macro expands to the difference between its second and third arguments.
It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency.
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<h4>Usage</h4>
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<b>BOOST_PP_SUB_D</b>(<i>d</i>, <i>x</i>, <i>y</i>)
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<h4>Arguments</h4>
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<dt>d</dt>
<dd>
The next available <b>BOOST_PP_WHILE</b> iteration.
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<dt>x</dt>
<dd>
The minuend of the operation.
Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.
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<dt>y</dt>
<dd>
The subtrahend of the operation.
Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.
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<h4>Remarks</h4>
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If the difference between <i>x</i> and <i>y</i> is less than <i>0</i>, the result is saturated to <i>0</i>.
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<h4>See Also</h4>
<ul>
<li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li>
<li><a href="sub.html">BOOST_PP_SUB</a></li>
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<h4>Requirements</h4>
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<b>Header:</b> <a href="../headers/arithmetic/sub.html"><boost/preprocessor/arithmetic/sub.hpp></a>
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<h4>Sample Code</h4>
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#include <<a href="../headers/arithmetic/dec.html">boost/preprocessor/arithmetic/dec.hpp</a>>
#include <<a href="../headers/arithmetic/sub.html">boost/preprocessor/arithmetic/sub.hpp</a>>
#include <<a href="../headers/control/while.html">boost/preprocessor/control/while.hpp</a>>
#include <<a href="../headers/tuple/elem.html">boost/preprocessor/tuple/elem.hpp</a>>
#define PRED(d, data) <a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 0, data)
#define OP(d, data) \
( \
<a href="dec.html">BOOST_PP_DEC</a>( \
<a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 0, data) \
), \
<a href="sub_d.html">BOOST_PP_SUB_D</a>( \
d, \
<a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 1, data), \
2 \
) \
) \
/**/
// decrement 'x' by 2 'n' times
#define STRIDE(x, n) <a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 1, <a href="while.html">BOOST_PP_WHILE</a>(PRED, OP, (n, x)))
STRIDE(10, 2) // expands to 6
STRIDE(14, 6) // expands to 2
</pre></div>
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<i>� Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
</br><i>� Copyright Paul Mensonides 2002</i>
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<p><small>Distributed under the Boost Software License, Version 1.0. (See
accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
copy at <a href=
"http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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