[En-Nut-Discussion] Floating Point support for ARM7 + Ethernut

[ml]

only with cast´s it will not work. float structure in memory is completly
different form integers
use trunc or round function to get an int 
and simply assign an int to a float in the other way round

martin



Lidya wrote:
> 
> I need to convert:  floating point value <----> unsigned int 
> based on the IEEE 754 standard. 
> 
> I have these functions that will do the convertion:
> 
> unsigned int ToInt(float floatValue)
> {
>    float* pf = &floatValue;
>    void* pv = (void*) pf;
>    return (*((unsigned int*)pv));
> }
> 
> float ToFloat(unsigned int u)
> {
>    unsigned int* pu = &u;
>    return (*((float*)pu));
> }
> 
> However invalid value are resulted. 
> Do I need the Floating Point support for NutOS or some more libraries to
> be included??
> If anyone knows how to do it, please inform me.
> 
> Thanks :)
> 

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