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Close| f | Value to compute the logarithm for. |
| p | Base of the logarithm operation. |
float Result of the logarithm operation.
Returns the logarithm of a specified number in a specified base.
The logarithm is the inverse function of exponentiation, meaning that it will output the exponent to which p needs to be raised to obtain f.
This function will return NaN if either:
- The value of f is negative.
- The value of p is negative, 0, 1 or Infinity.
Additionally, when the above is true, this function will return ±Infinity when:
- f equals Infinity (will return +Infinity).
- f equals 0 (-Infinity when p is in the (1,∞] range, +Infinity when p is in the (0,1) range).
Additional resources: Pow.
using UnityEngine;
public class ScriptExample : MonoBehaviour { void Start() { // Prints 2 Debug.Log(Mathf.Log(4, 2)); // Prints NaN Debug.Log(Mathf.Log(-4, 2)); // Prints NaN Debug.Log(Mathf.Log(4, -2)); // Prints NaN Debug.Log(Mathf.Log(4, 0)); // Prints NaN Debug.Log(Mathf.Log(4, 1)); // Prints NaN Debug.Log(Mathf.Log(4, Mathf.Infinity)); // Prints Infinity Debug.Log(Mathf.Log(Mathf.Infinity, 2)); // Prints -Infinity Debug.Log(Mathf.Log(0, 2)); // Prints Infinity Debug.Log(Mathf.Log(0, 0.2f)); } }
| f | Value to compute the logarithm for. |
float Result of the logarithm operation.
Returns the natural (base e) logarithm of a specified number.
Computing the natural logarithm of f is the inverse operation to computing the Exponential of the output of this function. This means that 'Mathf.Exp(x) = f', with x being the output of this function.
Additional resources: Exp.
using UnityEngine;
public class ScriptExample : MonoBehaviour { void Start() { // natural logarithm of 100 // prints 4.60517 Debug.Log(Mathf.Log(100)); } }