piWithInterrupts.cpp File Reference

#include <Rcpp.h>
#include <R_ext/Utils.h>

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Classes
class	interrupt_exception
Functions
static void	check_interrupt_impl (void *)
bool	check_interrupt ()
RcppExport SEXP	PiLeibniz (SEXP n, SEXP frequency)

---

Function Documentation

bool check_interrupt

(

)

[inline]

Call this method to check for user interrupts. This is based on the results of a discussion on the R-devel mailing list, suggested by Simon Urbanek.

Attention:

This method must not be called by any other thread than the master thread. If called from within an OpenMP parallel for loop, make sure to check for omp_get_thread_num()==0 before calling this method!

Returns:

True, if a user interrupt has been detected.

Definition at line 64 of file piWithInterrupts.cpp.

References check_interrupt_impl().

Referenced by PiLeibniz().

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static void check_interrupt_impl

(

void *

)

[inline, static]

Do the actual check for an interrupt.

Attention:

This method should never be called directly.

Parameters:

[in]

dummy

Dummy argument.

Definition at line 50 of file piWithInterrupts.cpp.

Referenced by check_interrupt().

RcppExport SEXP PiLeibniz	(	SEXP	n,
		SEXP	frequency
	)

Compute pi using the Leibniz formula (a very inefficient approach).

Parameters:

[in]	n	Number of summands
[in]	frequency	Check for interrupts after every frequency loop cycles.

Definition at line 75 of file piWithInterrupts.cpp.

References BEGIN_RCPP, check_interrupt(), END_RCPP, i, j, n, and Rcpp::wrap().

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