Jak jednoduse spocitat rosny bod

[Jozo]

>Floating point aritmetika mi problem nedela, ale nevim jak takove 8-bity
>pocitaji logaritmy...prestoze to evidentne NEJAK umeji.
>  
>
>

Prave preto je na taketo veci lepsie pouzivat cecko.  Pre 16F628 to 
skompilovalo jednoduchy prog. takto:

void main(void)
{
    double a,b;

    b = 45.8;
    a = log10(b);

}

Total ROM used      637 words (31.1%)
Total RAM used       41 bytes (18.3%)



<math.h> z hitechu obsahuje:

double fabs(double);                              
double floor(double);                             
double ceil(double);                              
double modf(double, double *);                    
double sqrt(double);                              
double atof(const char *);                        
double sin(double);                               
double cos(double);                               
double tan(double);                               
double asin(double);                              
double acos(double);                              
double atan(double);                              
double atan2(double, double);                     
double frexp(double, int *);                      
double ldexp(double, int);                        
double log(double);                               
double log10(double);                             
double pow(double, double);                       
double exp(double);                               
double sinh(double);                              
double cosh(double);                              
double tanh(double);                              
double eval_poly(double, const double *, int);