int main(void)
{
int i;
float h;
float ergebnis, differenz;
printf("\nWert von i exp(1 + h) - exp(1)) / h Fehler:");
printf("\n==================================================\n");
for (i=1; i<=22; i++)
{
h = float_pow(10,-i);
ergebnis = (float_exp(1 + h) - float_exp(1)) / h;
differenz = ergebnis - float_exp(1);
if (differenz<0)
differenz = differenz * (-1.0);
printf(" i = %d\t: \t%.15f ",i,ergebnis);
printf(" \t%.15f\n",differenz);
}
return 0;
}
void calculate_dof(int focal_length, int focus_distance, int av, char *min, char *max) {
float fl = 1.0f * focal_length;
float fd = 1000.0f * focus_distance;
float fn = float_pow(2.0f, ((float)av / 8.0f - 1) / 2.0f); // Precise F-Number = 2^(n/2), 1/8 EV resolution
float cof = 0.019f; // Circle of confusion
// Hyperfocal
float hf = fl + fl * fl / (fn * cof);
float aux = fd * (hf - fl) / 1000.0f;
// Min distance
display_float(min, aux / (hf + fd - 2.0f * fl));
// Max distance
if (hf >= fd)
display_float(max, aux / (hf - fd));
else
sprintf(max, "%s", LP_WORD(L_S_INFINITE));
}