Convert float to double - weird failure

Hello all,

I am trying to cast a float to a double (in C++) and am using the
static cast functionality. However, the value returned from the
static cast is not correct.

Example:
// Define a float
float f = 1.20000;

// Cast into a double - after the cast, the value of "d" is
// is "1.20000498297"
double d = static_cast<double> (f);

Is there some reason why the last few places are filled with garbage
now? I would have thought it would have been filled with 0's.

Any help would be much appriciated. Thanks!

.

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