I'd be damned surprised if floats were only 16 bit. Windows is a 32 bit OS like most others these days and CPUs work in 32 bit. 16 bits Floats would be a waste.
Just googled this...
[urlhttp://www.funducode.com/freec/Datatypes/datatypes1.htm[/url]
We should get a 23 bit mantissa and 8 bit exponent, giving 7 significant figures in the manitissa up to a max value of 8388608. As such all floats will be rounded to 7 (6?)significant figures, and accuracy is at most 1 millionth your largest value.
Therefore a millimetre would be accurate in a kilometre, but movements of fractions of a milimetre of an object a kilometre in size will suffer rounding errors.
Just googled this...
[urlhttp://www.funducode.com/freec/Datatypes/datatypes1.htm[/url]
We should get a 23 bit mantissa and 8 bit exponent, giving 7 significant figures in the manitissa up to a max value of 8388608. As such all floats will be rounded to 7 (6?)significant figures, and accuracy is at most 1 millionth your largest value.
Therefore a millimetre would be accurate in a kilometre, but movements of fractions of a milimetre of an object a kilometre in size will suffer rounding errors.