v-log-e-mathe
hio/nwt-gus-hi/v-log-e-mathe
Berechnet den natürlichen Logarithmus einer Zahl.
v-log-e-mathe
@/v-log-e-mathe
Berechnet den natürlichen Logarithmus einer Zahl.
Zahlnumber
lnnumber
C++ implementation
#pragma XOD dirtieness disable
node {
void evaluate(Context ctx) {
Number x = getValue<input_Zahl>(ctx);
emitValue<output_ln>(ctx, log(x));
}
}Tabular tests
| Zahl | ln |
|---|---|
| 0 | -Inf |
| -1 | NaN |
| 1 | 0 |
| 2 | 0.69315~ |
| 0.2 | -1.6094~ |
| NaN | NaN |
| Inf | Inf |
| -Inf | NaN |