C floating point

[Dik T. Winter]

....
> You miss the point. sizeof creates something of type size_t.
> This may be significantly larger than an int, so lying to the
> compiler about the parameter supplied to a variadic function
> results in UB.

You are missing the cast.

 

[CBFalconer]

You are missing the cast.

You're right. I was thinking of the original, which had no cast.

 

[Dan Pop]

Your best bet for now is to do arithmetic using integers to count
pennies.

Your best bet for now is to use a scaling factor (so that you deal with
integer values) and use long double's (in C89) or long long's (in C99) for
storing and manipulating these integer values.

Dan

 

[E. Robert Tisdale]

Fixed-point arithmetic, with a fractional part,
is not a part of Standard C. However, TR 18037

Can I get any documentation on this?
And, if so, where?

 

[P.J. Plauger]

Can I get any documentation on this?
And, if so, where?

http://std.dkuug.dk/JTC1/SC22/WG14/www/docs/n1021.pdf

P.J. Plauger
Dinkumware, Ltd.
http://www.dinkumware.com