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Re: [avr-chat] format '%5.2f' expects type 'double', but argument 6 has
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From: |
Joerg Wunsch |
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Subject: |
Re: [avr-chat] format '%5.2f' expects type 'double', but argument 6 has type 'float' |
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Date: |
Fri, 3 Feb 2012 08:02:20 +0100 (MET) |
Rick Mann <address@hidden> wrote:
> I thought the %f specifier accepted double or float.
While it's in practice the same in AVR-GCC, formally, it doesn't.
There is no output format specifier for `float', since it's impossible
passing a float down to a vargs function (it will always be promoted
to `double').
Reference: ISO/IEC 9899:1999, 7.19.6.1 The fprintf function
--
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