Limitation of function EXP()

[jcm]

Code: (Select All)

// EXP
double func_exp_single(double value) {
    if (value <= 88.02969) {
        return exp(value);
    }
    error(6);
    return 0;
}
long double func_exp_float(long double value) {
    if (value <= 709.782712893) {
        return exp(value);
    }
    error(6);
    return 0;
}

@SMcNeill

in this statement: if (value <= 709.782712893)
what if value is -11356 for example?
I think that it needs to be something like the following

Code: (Select All)

long double func_exp_float(long double value) {
    if (fabsl(value) <= 11355) {
        return exp(value);
    }
    error(6);
    return 0;
}

The limitation is with the definition of the maximum double 1.7976E+308

the maximum number = ln(1.7976E308)=709.78177061