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Johann17943
Joined: 11 Dec 2010
Posts: 11
Location: Germany
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| signed float |
 Posted: Mon May 12, 2014 2:53 pm |
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Sorry, but I have not found something in the Forum, but perhaps somebody can help very quickliy
I Need to define a signed float data type (for example -1.0769) and don't know how (signed float will not work) Compiler Version 4.141
Thanks.
Johann |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon May 12, 2014 3:11 pm |
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Download the CCS manual. Go to page 37. It says a 'float' can take
values in this range: -1.5 x 1045 to 3.4 x 1038
So yes, a 'float' is inherently capable of holding a negative number.
Example:
| Code: |
void main()
{
float temp = -5.321;
} |
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ezflyr
Joined: 25 Oct 2010
Posts: 1019
Location: Tewksbury, MA
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| Posted: Mon May 12, 2014 3:13 pm |
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Hi,
A 'float' data type in 'C' is inherently signed, so you need to do nothing more than
| Code: |
float MyVariable = -1.0769;
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Frankly, it's a strange question as mostly you encounter people that want an 'unsigned' version of the float variable for things that will never be negative, ie. the result of a square root operation.
John |
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asmboy
Joined: 20 Nov 2007
Posts: 2128
Location: albany ny
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| Posted: Mon May 12, 2014 3:17 pm |
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this is right up there with the special CCS vartype
signed int1
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Johann17943
Joined: 11 Dec 2010
Posts: 11
Location: Germany
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| Posted: Tue May 13, 2014 8:44 am |
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Hi!
Thanks a lot!
I have a quite old printed manual, but I'm using the Help-button from the Compiler. There is no range given for the float32.
I think, I should update my Compiler :-)
Thanks again!
Regards,
Johann |
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