The .NET Framework has too many numeric functions that can be used out of the box for numeric manipulation. This article is to learn about the most common ones that each developer should know.
The Numeric Functions in VB.NET
All numeric functions that are available VB.NET are implemented as the constant and static methods of Math Class, which is inherited from the Object class. For using any of Math methods from the Math class, you should use the methods with the word “Math.”, Or import the whole class using the keyword “imports” in VB.NET, and “using” in C#. Few of these functions and their usage and overload list are mentioned below:
Abs(int): This method returns about the absolute value of a particular number.
Dim x As Integer x = -2 Console.WriteLine(Abs(x))
Output
2
Overload List
Abs(Decimal)
Abs(Double)
Abs(Int16)
Abs(Int32)
Abs(Int64)
Abs(SByte)
Abs(Single)
Ceiling(Double): This function returns the smallest integral value that is greater than or equal to a Number.
Dim x As Double x = 2.56 Console.WriteLine(Ceiling(x))
Output
3
Overload List
Ceiling(Decimal)
Ceiling(Double)
Floor(Double): This function returns the largest integer value that is less than or equal to a numeric value.
Dim x As Double x = 2.56 Console.WriteLine(Floor(x))
Output
2
Overload List
Floor(Decimal)
Floor(Double)
Log(Double): This function returns the base e logarithm of the double value.
Dim x As Double x = 10 Console.WriteLine(Log(x))
Output
2.30258509299405
Overload List
Log(Double)
Log(Double, Double) Note: the 2nd Double argument is for the log base.
Log10(Double): This function returns the base 10 logarithm of the double value.
Dim x As Double x = 10 Console.WriteLine(Log10(x))
Output
1
Min(int,int): This function compares two numbers and returns the smallest one.
Dim x, y As Integer x = -2 y = 7 Console.WriteLine(Min(x, y))
Output
2
Overload List
Min(Byte, Byte)
Min(Decimal, Decimal)
Min(Double, Double)
Min(Int16, Int16)
Min(Int32, Int32)
Min(Int64, Int64)
Min(SByte, SByte)
Min(Single, Single)
Min(UInt16, UInt16)
Min(UInt32, UInt32)
Min(UInt64, UInt64)
Max(int,int): The function compares two numbers and returns the biggest one.
Dim x, y As Integer x = -2 y = 7 Console.WriteLine(Max(x, y))
Output
7
Overload List
Max(Byte, Byte)
Max(Decimal, Decimal)
Max(Double, Double)
Max(Int16, Int16)
Max(Int32, Int32)
Max(Int64, Int64)
Max(SByte, SByte)
Max(Single, Single)
Max(UInt16, UInt16)
Max(UInt32, UInt32)
Max(UInt64, UInt64)
Round(int): This function rounds a number to the nearest integral value.
Dim x As Integer x = 2.6 Console.WriteLine(Round(x))
Output
3
Overload List
Round(Decimal)
Round(Decimal, Int32)
Round(Decimal, Int32, MidpointRounding)
Round(Decimal, MidpointRounding)
Round(Double)
Round(Double, Int32)
Round(Double, Int32, MidpointRounding)
Round(Double, MidpointRounding)
Pow(Double,Double): The function returns the particular number which is raised at a specific power. For example, if the parameters are a and b, the output will also return a^b.
Dim x, y As Double x = 2 y = 3 Console.WriteLine(Pow(x, y))
Output
8
Sqrt(Double): The function returns the square root of a particular number.
Dim x As Double x = 25 Console.WriteLine(Sqrt(x))
Output
5
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