| Type: | Package |
| Title: | Xsimd C++ Header-Only Library Files |
| Version: | 7.1.6 |
| Date: | 2021-01-05 |
| Description: | This header-only library provides modern, portable C++ wrappers for SIMD intrinsics and parallelized, optimized math implementations (SSE, AVX, NEON, AVX512). By placing this library in this package, we offer an efficient distribution system for Xsimd https://github.com/xtensor-stack/xsimd for R packages using CRAN. |
| License: | BSD_3_clause + file LICENSE |
| Imports: | Rcpp (≥ 1.0.0) |
| LinkingTo: | Rcpp |
| RoxygenNote: | 7.1.1 |
| Encoding: | UTF-8 |
| Suggests: | testthat |
| NeedsCompilation: | yes |
| Packaged: | 2021-01-17 16:33:07 UTC; msuchard |
| Author: | Marc A. Suchard [aut, cre], Andrew J. Holbrook [aut], Observational Health Data Sciences and Informatics [cph], Johan Mabille [cph, ctb] (author and copyright holder of Xsimd library under a BSD-3 license), Sylvain Corlay [cph, ctb] (author and copyright holder of Xsimd library under a BSD-3 license), Alexander J. Lee [cph, ctb] (author and copyright holder of FeatureDetector library under a CC0 1.0 license) |
| Maintainer: | Marc A. Suchard <msuchard@ucla.edu> |
| Repository: | CRAN |
| Date/Publication: | 2021-01-21 23:30:10 UTC |
RcppXsimd: Rcpp wrapper to Xsimd
Description
The RcppXsimd package wrappers the header-only C++ Xsimd library that provides parallelized math implementations using SIMD
Concatenate supported AVX512 compiler flags for system CPU
Description
Concatenate supported AVX512 compiler flags for system CPU
Usage
getAVX512Flags()
Value
String for compiler flags
Concatenate supported AVX compiler flags for system CPU
Description
Concatenate supported AVX compiler flags for system CPU
Usage
getAVXFlags()
Value
String for compiler flags
Concatenate supported NEON compiler flags for system CPU
Description
Concatenate supported NEON compiler flags for system CPU
Usage
getNEONFlags()
Value
String for compiler flags
Concatenate supported SSE compiler flags for system CPU
Description
Concatenate supported SSE compiler flags for system CPU
Usage
getSSEFlags()
Value
String for compiler flags
Poll OS and CPU for SIMD feature support
Description
Execute CPUID to poll operating system and central processing unit for single instruction, multiple data feature support.
Usage
getSimdFeatures()
Value
List of operating sytem (OS) and hardware (HW) feature support; see CPUID Wiki page for flag definitions
References
https://en.wikipedia.org/wiki/CPUID
Determine if CPU supports AVX SIMD instructions
Description
Determine if CPU supports AVX SIMD instructions
Usage
supportsAVX()
Value
Boolean
Examples
## Not run:
if (supportsAVX()) {
Sys.setenv(PKG_CPPFLAGS = getAVXFlags())
Rcpp::sourceCpp(verbose = TRUE, code='
// [[Rcpp::plugins(cpp14)]]
// [[Rcpp::depends(RcppXsimd)]]
#include <Rcpp.h>
#include "xsimd/xsimd.hpp"
// [[Rcpp::export]]
void demoAVX() {
xsimd::batch<double, 4> a(1.0);
xsimd::batch<double, 4> b(1.0);
Rcpp::Rcout << a << " + " << b << " = " << (a + b) << std::endl;
}')
demoAVX()
} else {
message("AVX is not supported")
}
## End(Not run)
Determine if CPU supports AVX512 SIMD instructions
Description
Determine if CPU supports AVX512 SIMD instructions
Usage
supportsAVX512()
Value
Boolean
Examples
## Not run:
if (supportsAVX512()) {
Sys.setenv(PKG_CPPFLAGS = getAVX512Flags())
Rcpp::sourceCpp(verbose = TRUE, code='
// [[Rcpp::plugins(cpp14)]]
// [[Rcpp::depends(RcppXsimd)]]
#include <Rcpp.h>
#include "xsimd/xsimd.hpp"
// [[Rcpp::export]]
void demoAVX512() {
xsimd::batch<double, 8> a(1.0);
xsimd::batch<double, 8> b(1.0);
Rcpp::Rcout << a << " + " << b << " = " << (a + b) << std::endl;
}')
demoAVX512()
} else {
message("AVX512 is not supported")
}
## End(Not run)
Determine if CPU supports NEON SIMD instructions
Description
Determine if CPU supports NEON SIMD instructions
Usage
supportsNEON()
Value
Boolean
Examples
## Not run:
if (supportsNEON()) {
Sys.setenv(PKG_CPPFLAGS = getNEONFlags())
Rcpp::sourceCpp(verbose = TRUE, code='
// [[Rcpp::plugins(cpp14)]]
// [[Rcpp::depends(RcppXsimd)]]
#include <Rcpp.h>
#include "xsimd/xsimd.hpp"
// [[Rcpp::export]]
void demoNEON() {
xsimd::batch<double, 2> a(1.0);
xsimd::batch<double, 2> b(1.0);
Rcpp::Rcout << a << " + " << b << " = " << (a + b) << std::endl;
}')
demoNEON()
} else {
message("NEON is not supported")
}
## End(Not run)
Determine if CPU supports SSE SIMD instructions
Description
Determine if CPU supports SSE SIMD instructions
Usage
supportsSSE()
Value
Boolean
Examples
## Not run:
if (supportsSSE()) {
Sys.setenv(PKG_CPPFLAGS = getSSEFlags())
Rcpp::sourceCpp(verbose = TRUE, code='
// [[Rcpp::plugins(cpp14)]]
// [[Rcpp::depends(RcppXsimd)]]
#include <Rcpp.h>
#include "xsimd/xsimd.hpp"
// [[Rcpp::export]]
void demoSSE42() {
xsimd::batch<double, 2> a(1.0);
xsimd::batch<double, 2> b(1.0);
Rcpp::Rcout << a << " + " << b << " = " << (a + b) << std::endl;
}')
demoSSE42()
} else {
message("SSE4.2 is not supported")
}
## End(Not run)