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From: Brian Inglis <Brian DOT Inglis AT SystematicSW DOT Invalid>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: questions about formatting
Organization: Systematic Software
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Date: Wed, 09 Mar 2005 01:04:00 GMT
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To: djgpp AT delorie DOT com
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On Tue, 08 Mar 2005 22:14:38 GMT in comp.os.msdos.djgpp, "MarioC"
<marioc AT no-spam DOT qitech DOT net> wrote:

>"DJ Delorie" <dj AT delorie DOT com> wrote
>>
>>> values, the precision field indicates the maximum number of decimal
>>> digits printed (for g and G)
>>
>> Maximum digits.  Not maximum digits after the decimal point.
>
>Thanks for the answer (and for djgpp, by the way)... I was partly 
>mislead by "the number of fraction digits for a floating point number 
>(max for g or G, actual for others)" in the online docs that made me 
>think that g and f differred only marginally with this respect, but I 
>now see that I got the worst possible choice of a test case...

You can download the C99 Standard for US$18 at
http://global.ihs.com/doc_detail.cfm?input_doc_number=INCITS%2FISO%2FIEC%209899
and get the definitive description sweated over by the committee:

"7.19.6.1 The fprintf function
...
#4 ...
- An optional precision that gives the minimum number of digits to
appear for the d, i, o, u, x, and X conversions, the number of digits
to appear after the decimal-point character for a, A, e, E, f, and F
conversions, the maximum number of significant digits for the g and G
conversions, or the maximum number of bytes to be written for
s conversions." 

-- 
Thanks. Take care, Brian Inglis 	Calgary, Alberta, Canada

Brian DOT Inglis AT CSi DOT com 	(Brian[dot]Inglis{at}SystematicSW[dot]ab[dot]ca)
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