MathF.Pow(Single, Single) Method
Definition
Important
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Returns a specified number raised to the specified power.
public:
static float Pow(float x, float y);public static float Pow (float x, float y);static member Pow : single * single -> singlePublic Shared Function Pow (x As Single, y As Single) As SingleParameters
- x
- Single
The base number.
- y
- Single
The specified power.
Returns
x raised to the power of y
Remarks
The following table indicates the return value when various values or ranges of values are specified for the x and y parameters. For more information, see Single.PositiveInfinity, Single.NegativeInfinity, and Single.NaN.
| x | y | Return value |
|---|---|---|
Any value except NaN |
±0 | 1 |
NaN |
±0 | 1 (NaN on .NET Framework)* |
NaN |
Any value except 0 | NaN* |
| ±0 | < 0 and an odd integer | NegativeInfinity or PositiveInfinity |
| ±0 | NegativeInfinity |
PositiveInfinity |
| ±0 | PositiveInfinity |
+0 |
| ±0 | > 0 and an odd integer | ±0 |
| -1 | NegativeInfinity or PositiveInfinity |
1 |
| +1 | Any value except NaN |
1 |
| +1 | NaN |
1 (NaN on .NET Framework)* |
| Any value except 1 | NaN |
NaN* |
| -1 < x < 1 | PositiveInfinity |
+0 |
| < -1 or > 1 | PositiveInfinity |
PositiveInfinity |
| -1 < x < 1 | NegativeInfinity |
PositiveInfinity |
| < -1 or > 1 | NegativeInfinity |
+0 |
PositiveInfinity |
< 0 | +0 |
PositiveInfinity |
> 0 | PositiveInfinity |
NegativeInfinity |
< 0 and finite and odd integer | -0 |
NegativeInfinity |
> 0 and finite and odd integer | NegativeInfinity |
NegativeInfinity |
< 0 and finite and not an odd integer | +0 |
NegativeInfinity |
> 0 and finite and not an odd integer | PositiveInfinity |
| ±0 | < 0 and finite and not an odd integer | PositiveInfinity |
| ±0 | > 0 and finite and not an odd integer | +0 |
< 0 but not NegativeInfinity |
Finite non-integer | NaN |
* These rows don't appear in the full set of rules for pow as defined by the IEEE Standard for Floating-Point Arithmetic. They're included here because .NET disables IEEE 754 floating-point exceptions and thus doesn't differentiate between qNaN (quiet NaN) and sNaN (signalling NaN). The IEEE 754 specification allows this exception disablement.
This method calls into the underlying C runtime, and the exact result or valid input range may differ between different operating systems or architectures.
