IEEE Floating point format converstion to ForteDouble

Question

Question:
Given that I have 4 bytes of binary data which represents a number in
IEEE floating point format,
and I wish to convert it to a Forte DoubleData, will the following code
give me the correct answer
in Value?
(Assume that file is correctly set up, etc...)
Value : DoubleData = new;
FPoint : point to float;
F : float;
LineText : BinaryData = new;
File.ReadBinary(LineText,4);
Fpoint = (pointer to Float)(LineText.Value);
F = *Fpoint;
Value.SetValue(F);
Thanks
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Answer 1

Mark,
you might try testing whether forte floats are IEEE in the following
way using the following:
pflt : pointer to float = (pointer to float) (res.value);
flt = *pFlt;
however, I believe you will have to wrapper a C function to do this.
The C function takes a void * first argument and has a float
void ConvIEEE(void * buffer, float * return)
return = (float) (buffer);
or
void ConvIEEE(void buffer, float return)
ieeefloat ie;
ie = (ieeefloat) (*buffer);
*return = IEEELibraryConvertToFloat(ie);
depending upon whether C floats are IEEE or not on your
platform/compiler. I think you'll have to investigate this yourself,
or try the first approach and see if it works.
Good luck!
assuming, of course, that your C compiler's float is also IEEE format.
Your forte wrapper would look like
class floatWrapper inherits from framework.object
has public method ConvIEEE(input buffer : pointer,
output return : float)
end class;
with your binarydata you would
res : binarydata = (get from somewhere)
flt : float;
fw : FloatWrapper = new;
fw.ConvIEEE(res.value,flt);
Mark Sundsten wrote:
>
Question:
Given that I have 4 bytes of binary data which represents a number in
IEEE floating point format,
and I wish to convert it to a Forte DoubleData, will the following code
give me the correct answer
in Value?
(Assume that file is correctly set up, etc...)
Value : DoubleData = new;
FPoint : point to float;
F : float;
LineText : BinaryData = new;
File.ReadBinary(LineText,4);
Fpoint = (pointer to Float)(LineText.Value);
F = *Fpoint;
Value.SetValue(F);
Thanks
To unsubscribe, email '[email protected]' with
'unsubscribe forte-users' as the body of the message.
Searchable thread archive <URL:http://pinehurst.sageit.com/listarchive/>--
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