Am 09.09.2008 um 18:13 schrieb Ang Beepeng:

>
> I have wrote a named primitive that returns float, as follows,
>
> 1 primsIdentityOfFloat":aFloat"
> 2 	"primitive returning a floating point"
> 3
> 4	|aFloat|
> 5	self export: true.
> 6	self inline: false.
> 7	
> 8	self returnTypeC: 'float'.
> 9	aFloat := interpreterProxy stackFloatValue: 0.
> 10	self var: aFloat type:' float '.
> 11	interpreterProxy pop:2.
> 12	interpreterProxy push: (interpreterProxy floatObjectOf: aFloat).
>
> The primitive returns correct answer, but only until fourth or fifth  
> decimal
> points. For example, if the answer is "4.88888", primitive returns
> "4.888880014419556". I added several steps, line 8 , 10 & 12, trying  
> to
> return or declare the correct data type or object both in C and also  
> in
> Smalltalk. But I still do not get the correct answer.
> What can be corrected for higher precision answer? Thanks.


Squeak Floats are C doubles.

- Bert -