Math Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Provides constants and static methods for trigonometric, logarithmic, and other common mathematical functions.
Assembly: mscorlib (in mscorlib.dll)
The Math type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | Abs(Decimal) | Returns the absolute value of a Decimal number. |
![]() ![]() | Abs(Double) | Returns the absolute value of a double-precision floating-point number. |
![]() ![]() | Abs(Int16) | Returns the absolute value of a 16-bit signed integer. |
![]() ![]() | Abs(Int32) | Returns the absolute value of a 32-bit signed integer. |
![]() ![]() | Abs(Int64) | Returns the absolute value of a 64-bit signed integer. |
![]() ![]() | Abs(SByte) | Returns the absolute value of an 8-bit signed integer. |
![]() ![]() | Abs(Single) | Returns the absolute value of a single-precision floating-point number. |
![]() ![]() | Acos | Returns the angle whose cosine is the specified number. |
![]() ![]() | Asin | Returns the angle whose sine is the specified number. |
![]() ![]() | Atan | Returns the angle whose tangent is the specified number. |
![]() ![]() | Atan2 | Returns the angle whose tangent is the quotient of two specified numbers. |
![]() ![]() | Ceiling(Decimal) | Returns the smallest integral value that is greater than or equal to the specified decimal number. |
![]() ![]() | Ceiling(Double) | Returns the smallest integral value greater than or equal to the specified double-precision floating-point number. |
![]() ![]() | Cos | Returns the cosine of the specified angle. |
![]() ![]() | Cosh | Returns the hyperbolic cosine of the specified angle. |
![]() ![]() | Exp | Returns e raised to the specified power. |
![]() ![]() | Floor(Decimal) | Returns the largest integer less than or equal to the specified decimal number. |
![]() ![]() | Floor(Double) | Returns the largest integer less than or equal to the specified double-precision floating-point number. |
![]() ![]() | IEEERemainder | Returns the remainder resulting from the division of a specified number by another specified number. |
![]() ![]() | Log(Double) | Returns the natural (base e) logarithm of a specified number. |
![]() ![]() | Log(Double, Double) | Returns the logarithm of a specified number in a specified base. |
![]() ![]() | Log10 | Returns the base 10 logarithm of a specified number. |
![]() ![]() | Max(Byte, Byte) | Returns the larger of two 8-bit unsigned integers. |
![]() ![]() | Max(Decimal, Decimal) | Returns the larger of two decimal numbers. |
![]() ![]() | Max(Double, Double) | Returns the larger of two double-precision floating-point numbers. |
![]() ![]() | Max(Int16, Int16) | Returns the larger of two 16-bit signed integers. |
![]() ![]() | Max(Int32, Int32) | Returns the larger of two 32-bit signed integers. |
![]() ![]() | Max(Int64, Int64) | Returns the larger of two 64-bit signed integers. |
![]() ![]() | Max(SByte, SByte) | Returns the larger of two 8-bit signed integers. |
![]() ![]() | Max(Single, Single) | Returns the larger of two single-precision floating-point numbers. |
![]() ![]() | Max(UInt16, UInt16) | Returns the larger of two 16-bit unsigned integers. |
![]() ![]() | Max(UInt32, UInt32) | Returns the larger of two 32-bit unsigned integers. |
![]() ![]() | Max(UInt64, UInt64) | Returns the larger of two 64-bit unsigned integers. |
![]() ![]() | Min(Byte, Byte) | Returns the smaller of two 8-bit unsigned integers. |
![]() ![]() | Min(Decimal, Decimal) | Returns the smaller of two decimal numbers. |
![]() ![]() | Min(Double, Double) | Returns the smaller of two double-precision floating-point numbers. |
![]() ![]() | Min(Int16, Int16) | Returns the smaller of two 16-bit signed integers. |
![]() ![]() | Min(Int32, Int32) | Returns the smaller of two 32-bit signed integers. |
![]() ![]() | Min(Int64, Int64) | Returns the smaller of two 64-bit signed integers. |
![]() ![]() | Min(SByte, SByte) | Returns the smaller of two 8-bit signed integers. |
![]() ![]() | Min(Single, Single) | Returns the smaller of two single-precision floating-point numbers. |
![]() ![]() | Min(UInt16, UInt16) | Returns the smaller of two 16-bit unsigned integers. |
![]() ![]() | Min(UInt32, UInt32) | Returns the smaller of two 32-bit unsigned integers. |
![]() ![]() | Min(UInt64, UInt64) | Returns the smaller of two 64-bit unsigned integers. |
![]() ![]() | Pow | Returns a specified number raised to the specified power. |
![]() ![]() | Round(Decimal) | Rounds a decimal value to the nearest integral value. |
![]() ![]() | Round(Double) | Rounds a double-precision floating-point value to the nearest integral value. |
![]() ![]() | Round(Decimal, Int32) | Rounds a decimal value to a specified number of fractional digits. |
![]() ![]() | Round(Decimal, MidpointRounding) | Rounds a decimal value to the nearest integer. A parameter specifies how to round the value if it is midway between two other numbers. |
![]() ![]() | Round(Double, Int32) | Rounds a double-precision floating-point value to a specified number of fractional digits. |
![]() ![]() | Round(Double, MidpointRounding) | Rounds a double-precision floating-point value to the nearest integer. A parameter specifies how to round the value if it is midway between two other numbers. |
![]() ![]() | Round(Decimal, Int32, MidpointRounding) | Rounds a decimal value to a specified number of fractional digits. A parameter specifies how to round the value if it is midway between two other numbers. |
![]() ![]() | Round(Double, Int32, MidpointRounding) | Rounds a double-precision floating-point value to the specified number of fractional digits. A parameter specifies how to round the value if it is midway between two other numbers. |
![]() ![]() | Sign(Decimal) | Returns a value indicating the sign of a decimal number. |
![]() ![]() | Sign(Double) | Returns a value indicating the sign of a double-precision floating-point number. |
![]() ![]() | Sign(Int16) | Returns a value indicating the sign of a 16-bit signed integer. |
![]() ![]() | Sign(Int32) | Returns a value indicating the sign of a 32-bit signed integer. |
![]() ![]() | Sign(Int64) | Returns a value indicating the sign of a 64-bit signed integer. |
![]() ![]() | Sign(SByte) | Returns a value indicating the sign of an 8-bit signed integer. |
![]() ![]() | Sign(Single) | Returns a value indicating the sign of a single-precision floating-point number. |
![]() ![]() | Sin | Returns the sine of the specified angle. |
![]() ![]() | Sinh | Returns the hyperbolic sine of the specified angle. |
![]() ![]() | Sqrt | Returns the square root of a specified number. |
![]() ![]() | Tan | Returns the tangent of the specified angle. |
![]() ![]() | Tanh | Returns the hyperbolic tangent of the specified angle. |
![]() ![]() | Truncate(Decimal) | Calculates the integral part of a specified decimal number. |
![]() ![]() | Truncate(Double) | Calculates the integral part of a specified double-precision floating-point number. |
The following code sample uses several mathematical and trigonometric functions from the Math class to calculate the inner angles of a trapezoid.
'The following class represents simple functionality of the trapezoid. Class Example Private m_longBase As Double Private m_shortBase As Double Private m_leftLeg As Double Private m_rightLeg As Double Public Sub New(ByVal longbase As Double, ByVal shortbase As Double, ByVal leftLeg As Double, ByVal rightLeg As Double) m_longBase = Math.Abs(longbase) m_shortBase = Math.Abs(shortbase) m_leftLeg = Math.Abs(leftLeg) m_rightLeg = Math.Abs(rightLeg) End Sub Private Function GetRightSmallBase() As Double GetRightSmallBase = (Math.Pow(m_rightLeg, 2) - Math.Pow(m_leftLeg, 2) + Math.Pow(m_longBase, 2) + Math.Pow(m_shortBase, 2) - 2 * m_shortBase * m_longBase) / (2 * (m_longBase - m_shortBase)) End Function Public Function GetHeight() As Double Dim x As Double = GetRightSmallBase() GetHeight = Math.Sqrt(Math.Pow(m_rightLeg, 2) - Math.Pow(x, 2)) End Function Public Function GetSquare() As Double GetSquare = GetHeight() * m_longBase / 2 End Function Public Function GetLeftBaseRadianAngle() As Double Dim sinX As Double = GetHeight() / m_leftLeg GetLeftBaseRadianAngle = Math.Round(Math.Asin(sinX), 2) End Function Public Function GetRightBaseRadianAngle() As Double Dim x As Double = GetRightSmallBase() Dim cosX As Double = (Math.Pow(m_rightLeg, 2) + Math.Pow(x, 2) - Math.Pow(GetHeight(), 2)) / (2 * x * m_rightLeg) GetRightBaseRadianAngle = Math.Round(Math.Acos(cosX), 2) End Function Public Function GetLeftBaseDegreeAngle() As Double Dim x As Double = GetLeftBaseRadianAngle() * 180 / Math.PI GetLeftBaseDegreeAngle = Math.Round(x, 2) End Function Public Function GetRightBaseDegreeAngle() As Double Dim x As Double = GetRightBaseRadianAngle() * 180 / Math.PI GetRightBaseDegreeAngle = Math.Round(x, 2) End Function Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock) Dim trpz As Example = New Example(20, 10, 8, 6) outputBlock.Text += String.Format("The trapezoid's bases are 20.0 and 10.0, the trapezoid's legs are 8.0 and 6.0") & vbCrLf Dim h As Double = trpz.GetHeight() outputBlock.Text &= "Trapezoid height is: " + h.ToString() & vbCrLf Dim dxR As Double = trpz.GetLeftBaseRadianAngle() outputBlock.Text &= "Trapezoid left base angle is: " + dxR.ToString() + " Radians" & vbCrLf Dim dyR As Double = trpz.GetRightBaseRadianAngle() outputBlock.Text &= "Trapezoid right base angle is: " + dyR.ToString() + " Radians" & vbCrLf Dim dxD As Double = trpz.GetLeftBaseDegreeAngle() outputBlock.Text &= "Trapezoid left base angle is: " + dxD.ToString() + " Degrees" & vbCrLf Dim dyD As Double = trpz.GetRightBaseDegreeAngle() outputBlock.Text &= "Trapezoid left base angle is: " + dyD.ToString() + " Degrees" & vbCrLf End Sub End Class
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