Difference between revisions of "CPP/NAN"
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Daviddoria (Talk | contribs) (Created page with '==NAN.cpp== <source lang="cpp"> #include <iostream> #include <limits> using namespace std; bool IsNaN(const double a); int main(int argc, char *argv[]) { double a = nume…') |
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Revision as of 08:47, 23 June 2010
NAN.cpp
#include <iostream> #include <limits> using namespace std; bool IsNaN(const double a); int main(int argc, char *argv[]) { double a = numeric_limits<double>::quiet_NaN(); double b = 20; cout << "Is a NAN? " << a << " " << IsNaN(a) << endl; cout << "Is b NAN? " << b << " " << IsNaN(b) << endl; return 0; } bool IsNaN(const double a) { if(a!=a) { return true; } return false; }