stdThreadMax

<p>Rcpp wrapper of <a href="https://en.cppreference.com/w/cpp/thread/thread/hardware_concurrency">std::thread::hardware_concurrency()</a>. As stated by <a href="https://en.cppreference.com/w/">cppreference</a>, the returned value should be considered only a hint.</p>

Provides optimized functions implemented in C++ with 'Rcpp'
for solving problems in combinatorics and computational mathematics.
Utilizes parallel programming via 'RcppThread' for maximal performance.
Also makes use of the RMatrix class from the 'RcppParallel' library.
There are combination/permutation functions with constraint parameters
that allow for generation of all combinations/permutations of a vector
meeting specific criteria (e.g. finding all combinations such
that the sum is between two bounds). Capable of generating specific
combinations/permutations (e.g. retrieve only the nth lexicographical
result) which sets up nicely for parallelization as well as random
sampling. Gmp support permits exploration where the total number of
results is large (e.g. comboSample(10000, 500, n = 4)). Additionally,
there are several high performance number theoretic functions that
are useful for problems common in computational mathematics. Some of
these functions make use of the fast integer division library
'libdivide' by <http://ridiculousfish.com>. The primeSieve function
is based on the segmented sieve of Eratosthenes implementation by
Kim Walisch. It is also efficient for large numbers by using the
cache friendly improvements originally developed by Tom<c3><a1>s Oliveira.
Finally, there is a prime counting function that implements Legendre's
formula based on the algorithm by Kim Walisch.

Joseph Wood

RcppAlgos

High Performance Tools for Combinatorics and Computational
Mathematics

stdThreadMax function

<p>Rcpp wrapper of <a href='https://en.cppreference.com/w/cpp/thread/thread/hardware_concurrency'>std::thread::hardware_concurrency()</a>. As stated by <a href='https://en.cppreference.com/w/'>cppreference</a>, the returned value should be considered only a hint.</p>

stdThreadMax: Max Number of Concurrent Threads

Description

Usage

Arguments

Value

See Also

Examples