Question

How to use frexp() function to get floating point value N into a normalized fraction and an integral power of two in C++

Answer 1

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
	int i;
	double f2 = frexp(12.34, &i);
	cout << "frexp(12.34, &i) = " << f2 << " * 2^" << i << endl;

	return 0;
}


/*
run:

frexp(12.34, &i) = 0.77125 * 2^4

*/

 

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