Rcpp Version 1.1.2
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piSugar.cpp
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#include <
Rcpp.h
>
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using namespace
Rcpp
;
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// [[Rcpp::export]]
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double
piSugar
(
const
int
N) {
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NumericVector
x =
runif
(N);
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NumericVector
y =
runif
(N);
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NumericVector
d = sqrt(x*x + y*y);
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return
4.0 *
sum
(d < 1.0) / N;
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}
Rcpp.h
Rcpp
Rcpp API.
Definition
algo.h:28
Rcpp::NumericVector
Vector< REALSXP > NumericVector
Definition
instantiation.h:30
Rcpp::runif
NumericVector runif(int n, double min, double max)
Definition
random.h:295
Rcpp::sum
sugar::Sum< INTSXP, NA, T > sum(const VectorBase< INTSXP, NA, T > &t)
Definition
sum.h:99
piSugar
double piSugar(const int N)
Definition
piSugar.cpp:7
inst
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piSugar.cpp
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