logical3s

and3s

or3s

Performant implementations of <code>&amp;</code> et <code>or</code>.
Performance is high when the expressions are long (i.e. over 10M elements)
and in particular when they are of the form <code>lhs &lt;op&gt; rhs</code> for binary
<code>&lt;op&gt;</code>.

Provides utility functions that are simply, frequently used,
but may require higher performance that what can be obtained from base R.
Incidentally provides support for 'reverse geocoding', such as matching a point
with its nearest neighbour in another array. Used as a complement to package
'hutils' by sacrificing compilation or installation time for higher running
speeds. The name is a portmanteau of the author and 'Rcpp'.

Hugh Parsonage

hutilscpp

Miscellaneous Functions in C++

Simon Urbanek

logical3s function

<dl><dt>exprA, exprB, exprC, ...</dt>
<dd>Expressions of the form <code>x &lt;op&gt; y</code>.
with <code>&lt;op&gt;</code> one of the standard binary operators.
Only <code>exprA</code> is required, all following expressions are optional.</dd>
<dt>nThread</dt>
<dd><dl>
<dt><code>integer(1)</code></dt>
<dd>Number of threads to use.</dd></dl></dd>
</dl>
<dt>.parent_nframes</dt>
<dd><dl>
<dt><code>integer(1)</code></dt>
<dd>For internal use. Passed to <code>eval.parent</code>.</dd></dl></dd>

<dt>type</dt>
<dd>The type of the result. <code>which</code> corresponds to the
indices of <code>TRUE</code> in the result. Type <code>raw</code> is available
for a memory-constrained result, though the result will not be
interpreted as logical.</dd>

Arguments

Complex logical expressions — logical3s

<dl>

<dt>exprA, exprB, exprC, ...</dt>
<dd>Expressions of the form <code>x &lt;op&gt; y</code>.
with <code>&lt;op&gt;</code> one of the standard binary operators.
Only <code>exprA</code> is required, all following expressions are optional.</dd>


<dt>nThread</dt>
<dd><dl>
<dt><code>integer(1)</code></dt>
<dd>Number of threads to use.</dd>


</dl></dd>


<dt>.parent_nframes</dt>
<dd><dl>
<dt><code>integer(1)</code></dt>
<dd>For internal use. Passed to <code>eval.parent</code>.</dd>


</dl></dd>


<dt>type</dt>
<dd>The type of the result. <code>which</code> corresponds to the
indices of <code>TRUE</code> in the result. Type <code>raw</code> is available
for a memory-constrained result, though the result will not be
interpreted as logical.</dd>

</dl>

logical3s: Complex logical expressions

Description

Usage

Value

Arguments