UKismetMathLibrary::Loge
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintPure
Description
Returns the natural logarithm (base e) of A. The inverse of Exp.
Caveats & Gotchas
- • Passing A <= 0 returns -infinity (A == 0) or NaN (A < 0); always ensure the input is positive before calling, especially when computing logs of distances or ratios that could legitimately reach zero.
- • In Blueprint the node is labelled 'Natural Log' — searching for 'Loge' in the node browser may not surface it; look for the display name instead.
Signature
static UE_INL_API double Loge(double A);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| A | double | The value to compute the natural logarithm of. Must be > 0. | — |
Return Type
double Example
Convert an exponential decay constant to half-life C++
double DecayConstant = 0.5;
double HalfLife = UKismetMathLibrary::Loge(2.0) / DecayConstant; // ≈ 1.386Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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