mirror of
https://github.com/boostorg/math.git
synced 2025-05-11 21:33:52 +00:00
d4de174bbb
Rework hypergeometric distro equations. Fix up Fibonacci docs. Fix Fibonacci constexpr and noexcept usage and add to testing. Regenerate docs.
32 lines
962 B
C++
32 lines
962 B
C++
// Copyright 2020, Madhur Chauhan
|
|
|
|
// Use, modification and distribution are subject to the
|
|
// Boost Software License, Version 1.0.
|
|
// (See accompanying file LICENSE_1_0.txt
|
|
// or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
// This is an example to calculate Reciprocal Fibonacci Constant (A079586 in the OEIS)
|
|
// compile with flags: -std=c++11 -lmpfr
|
|
|
|
//[fibonacci_eg
|
|
|
|
#include <boost/math/special_functions/fibonacci.hpp>
|
|
#include <boost/multiprecision/mpfr.hpp>
|
|
#include <iomanip>
|
|
#include <iostream>
|
|
|
|
int main() {
|
|
using Real = boost::multiprecision::mpfr_float_1000;
|
|
boost::math::fibonacci_generator<Real> gen;
|
|
gen.set(1); // start producing values from 1st fibonacci number
|
|
Real ans = 0;
|
|
const int ITR = 1000;
|
|
for (int i = 0; i < ITR; ++i) {
|
|
ans += 1.0 / gen();
|
|
}
|
|
std::cout << std::setprecision(1000) << "Reciprocal fibonacci constant after "
|
|
<< ITR << " iterations is: " << ans << std::endl;
|
|
}
|
|
|
|
//]
|