Number of precision digits for double in C++ different in windows and Linux. Why? Linux shows more than 20 non-zero precision digits

Question

Just did this:

double val1=numeric_limits::max();
cout.precision(70);
cout<<\"\\nVal1: \"<

In Windows I sta

Answer 1

Once you get past the number of digits contained in a double, you're at the mercy of your compiler's library implementation. Different algorithms for converting from binary to decimal will result in different output. Neither can be more accurate than the other.