c++ floating point precision loss: 3015/0.00025298219406977296

Question

The problem.

Microsoft Visual C++ 2005 compiler, 32bit windows xp sp3, amd 64 x2 cpu.

Code:

double a = 3015.0; 
double b = 0.00025298219406977296         


        

Answer 1

If you need precise math, don't use floating point.

Do yourself a favor and get a BigNum library with rational number support.