Re: [arm-gnu] sprintf issue on Cortex-M3

[Daniel Jacobowitz <dan@xxxxxxxxxxxxxxxx>]

On Tue, Dec 15, 2009 at 02:06:07PM +0100, Norbert Unterberg wrote:
> Hi,
> 
> we are using arm-none-eabi-gcc (Sourcery G++ Lite 2009q3-68) 4.4.1.
> 
> Formatting a floating point number with sprintf does not seem to work:
> 
>    char b[20];
>    float temperature = 0.4f;
>    sprintf(b, "%6.1f ", temperature);
> 
> prints "  -0.0" into the buffer.

I tried this using Sourcery G++ 4.4-70, using a Luminary LM3S811
board.  It worked fine, printing " 0.4 " into the buffer.  The problem
must be specific to your linker scripts or startup code; it's not in
the library.

-- 
Daniel Jacobowitz
CodeSourcery