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Math.Abs Method

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Definition

Namespace:
System
Assembly:
System.Runtime.Extensions.dll
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll

Returns the absolute value of a specified number.

Overloads

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(IntPtr)

Returns the absolute value of a native 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.

Abs(Decimal)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Returns the absolute value of a Decimal number.

public:
 static System::Decimal Abs(System::Decimal value);
public static decimal Abs (decimal value);
static member Abs : decimal -> decimal
Public Shared Function Abs (value As Decimal) As Decimal

Parameters

value
Decimal

A number that is greater than or equal to Decimal.MinValue, but less than or equal to Decimal.MaxValue.

Returns

Decimal

A decimal number, x, such that 0 ≤ x ≤ Decimal.MaxValue.

Examples

The following example uses the Abs(Decimal) method to get the absolute value of a number of Decimal values.

decimal[] decimals = { Decimal.MaxValue, 12.45M, 0M, -19.69M,
                       Decimal.MinValue };
foreach (decimal value in decimals)
   Console.WriteLine($"Abs({value}) = {Math.Abs(value)}");

// The example displays the following output:
//       Abs(79228162514264337593543950335) = 79228162514264337593543950335
//       Abs(12.45) = 12.45
//       Abs(0) = 0
//       Abs(-19.69) = 19.69
//       Abs(-79228162514264337593543950335) = 79228162514264337593543950335

open System

let decimals = 
    [ Decimal.MaxValue; 12.45M; 0M
      -19.69M; Decimal.MinValue ]

for value in decimals do
    // The 'abs' function may be used instead.
    printfn $"Abs({value}) = {Math.Abs value}"

// The example displays the following output:
//       Abs(79228162514264337593543950335) = 79228162514264337593543950335
//       Abs(12.45) = 12.45
//       Abs(0) = 0
//       Abs(-19.69) = 19.69
//       Abs(-79228162514264337593543950335) = 79228162514264337593543950335

Remarks

The absolute value of a Decimal is its numeric value without its sign. For example, the absolute value of both 1.2 and -1.2 is 1.2.

Applies to

Abs(Double)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Returns the absolute value of a double-precision floating-point number.

public:
 static double Abs(double value);
public static double Abs (double value);
static member Abs : double -> double
Public Shared Function Abs (value As Double) As Double

Parameters

value
Double

A number that is greater than or equal to Double.MinValue, but less than or equal to Double.MaxValue.

Returns

Double

A double-precision floating-point number, x, such that 0 ≤ x ≤ Double.MaxValue.

Examples

The following example uses the Abs(Double) method to get the absolute value of a number of Double values.

double[] doubles = { Double.MaxValue, 16.354e-17, 15.098123, 0,
                     -19.069713, -15.058e18, Double.MinValue };
foreach (double value in doubles)
   Console.WriteLine($"Abs({value}) = {Math.Abs(value)}");

// The example displays the following output:
//       Abs(1.79769313486232E+308) = 1.79769313486232E+308
//       Abs(1.6354E-16) = 1.6354E-16
//       Abs(15.098123) = 15.098123
//       Abs(0) = 0
//       Abs(-19.069713) = 19.069713
//       Abs(-1.5058E+19) = 1.5058E+19
//       Abs(-1.79769313486232E+308) = 1.79769313486232E+308

open System

let doubles = 
    [ Double.MaxValue; 16.354e-17; 15.098123; 0
      -19.069713; -15.058e18; Double.MinValue ]

for value in doubles do
    // The 'abs' function may be used instead.
    printfn $"Abs({value}) = {Math.Abs value}"

// The example displays the following output:
//       Abs(1.79769313486232E+308) = 1.79769313486232E+308
//       Abs(1.6354E-16) = 1.6354E-16
//       Abs(15.098123) = 15.098123
//       Abs(0) = 0
//       Abs(-19.069713) = 19.069713
//       Abs(-1.5058E+19) = 1.5058E+19
//       Abs(-1.79769313486232E+308) = 1.79769313486232E+308

Module Example
   Public Sub Main()
      Dim doubles() As Double = { Double.MaxValue, 16.354e-17, 15.098123, 0, _
                                  -19.069713, -15.058e18, Double.MinValue }
      For Each value As Double In doubles
         Console.WriteLine("Abs({0}) = {1}", value, Math.Abs(value))
      Next
   End Sub
End Module
' The example displays the following output:
'       Abs(1.79769313486232E+308) = 1.79769313486232E+308
'       Abs(1.6354E-16) = 1.6354E-16
'       Abs(15.098123) = 15.098123
'       Abs(0) = 0
'       Abs(-19.069713) = 19.069713
'       Abs(-1.5058E+19) = 1.5058E+19
'       Abs(-1.79769313486232E+308) = 1.79769313486232E+308

Remarks

The absolute value of a Double is its numeric value without its sign. For example, the absolute value of both 1.2e03 and -1.2e03 is 1.2e03.

If value is equal to NegativeInfinity or PositiveInfinity, the return value is PositiveInfinity. If value is equal to NaN, the return value is NaN.

Applies to

Abs(Int16)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Returns the absolute value of a 16-bit signed integer.

public:
 static short Abs(short value);
public static short Abs (short value);
static member Abs : int16 -> int16
Public Shared Function Abs (value As Short) As Short

Parameters

value
Int16

A number that is greater than Int16.MinValue, but less than or equal to Int16.MaxValue.

Returns

Int16

A 16-bit signed integer, x, such that 0 ≤ x ≤ Int16.MaxValue.

Exceptions

OverflowException

value equals Int16.MinValue.

Examples

The following example uses the Abs(Int16) method to get the absolute value of a number of Int16 values.

short[] values = { Int16.MaxValue, 10328, 0, -1476, Int16.MinValue };
foreach (short value in values)
{
   try {
      Console.WriteLine($"Abs({value}) = {Math.Abs(value)}");
   }
   catch (OverflowException) {
      Console.WriteLine("Unable to calculate the absolute value of {0}.",
                        value);
   }
}

// The example displays the following output:
//       Abs(32767) = 32767
//       Abs(10328) = 10328
//       Abs(0) = 0
//       Abs(-1476) = 1476
//       Unable to calculate the absolute value of -32768.

open System

let values = 
    [ Int16.MaxValue; 10328s; 0s; -1476s; Int16.MinValue ]

for value in values do
    try
        // The 'abs' function may be used instead.
        printfn $"Abs({value}) = {Math.Abs value}"
    with :? OverflowException ->
        printfn $"Unable to calculate the absolute value of {value}."

// The example displays the following output:
//       Abs(32767) = 32767
//       Abs(10328) = 10328
//       Abs(0) = 0
//       Abs(-1476) = 1476
//       Unable to calculate the absolute value of -32768.

Module Example
   Public Sub Main()
      Dim values() As Short = { Int16.MaxValue, 10328, 0, -1476, Int16.MinValue }
      For Each value As Short In values
         Try
            Console.WriteLine("Abs({0}) = {1}", value, Math.Abs(value))
         Catch e As OverflowException
            Console.WriteLine("Unable to calculate the absolute value of {0}.", _
                              value)
         End Try   
      Next
   End Sub
End Module
' The example displays the following output:
'       Abs(32767) = 32767
'       Abs(10328) = 10328
'       Abs(0) = 0
'       Abs(-1476) = 1476
'       Unable to calculate the absolute value of -32768.

Remarks

The absolute value of an Int16 is its numeric value without its sign. For example, the absolute value of both 123 and -123 is 123.

Applies to

Abs(Int32)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Returns the absolute value of a 32-bit signed integer.

public:
 static int Abs(int value);
public static int Abs (int value);
static member Abs : int -> int
Public Shared Function Abs (value As Integer) As Integer

Parameters

value
Int32

A number that is greater than Int32.MinValue, but less than or equal to Int32.MaxValue.

Returns

Int32

A 32-bit signed integer, x, such that 0 ≤ x ≤ Int32.MaxValue.

Exceptions

OverflowException

value equals Int32.MinValue.

Examples

The following example uses the Abs(Int32) method to get the absolute value of a number of Int32 values.

int[] values = { Int32.MaxValue, 16921, 0, -804128, Int32.MinValue };
foreach (int value in values)
{
   try {
      Console.WriteLine($"Abs({value}) = {Math.Abs(value)}");
   }
   catch (OverflowException) {
      Console.WriteLine("Unable to calculate the absolute value of {0}.",
                        value);
   }
}

// The example displays the following output:
//       Abs(2147483647) = 2147483647
//       Abs(16921) = 16921
//       Abs(0) = 0
//       Abs(-804128) = 804128
//       Unable to calculate the absolute value of -2147483648.

open System

let values = 
    [ Int32.MaxValue; 16921; 0; -804128; Int32.MinValue ]

for value in values do
    try 
        // The 'abs' function may be used instead.
        printfn $"Abs({value}) = {Math.Abs(value)}"
    with :? OverflowException ->
        printfn $"Unable to calculate the absolute value of {value}."

// The example displays the following output:
//       Abs(2147483647) = 2147483647
//       Abs(16921) = 16921
//       Abs(0) = 0
//       Abs(-804128) = 804128
//       Unable to calculate the absolute value of -2147483648.

Module Example
   Public Sub Main()
      Dim values() As Integer = { Int32.MaxValue, 16921, 0, -804128, Int32.MinValue }
      For Each value As Integer In values
         Try
            Console.WriteLine("Abs({0}) = {1}", value, Math.Abs(value))
         Catch e As OverflowException
            Console.WriteLine("Unable to calculate the absolute value of {0}.", _
                              value)
         End Try   
      Next
   End Sub
End Module
' The example displays the following output:
'       Abs(2147483647) = 2147483647
'       Abs(16921) = 16921
'       Abs(0) = 0
'       Abs(-804128) = 804128
'       Unable to calculate the absolute value of -2147483648.

Remarks

The absolute value of an Int32 is its numeric value without its sign. For example, the absolute value of both 123 and -123 is 123.

Applies to

Abs(Int64)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Returns the absolute value of a 64-bit signed integer.

public:
 static long Abs(long value);
public static long Abs (long value);
static member Abs : int64 -> int64
Public Shared Function Abs (value As Long) As Long

Parameters

value
Int64

A number that is greater than Int64.MinValue, but less than or equal to Int64.MaxValue.

Returns

Int64

A 64-bit signed integer, x, such that 0 ≤ x ≤ Int64.MaxValue.

Exceptions

OverflowException

value equals Int64.MinValue.

Examples

The following example uses the Abs(Int64) method to get the absolute value of a number of Int64 values.

long[] values = { Int64.MaxValue, 109013, 0, -6871982, Int64.MinValue };
foreach (long value in values)
{
   try {
      Console.WriteLine($"Abs({value}) = {Math.Abs(value)}");
   }
   catch (OverflowException) {
      Console.WriteLine("Unable to calculate the absolute value of {0}.",
                        value);
   }
}

// The example displays the following output:
//       Abs(9223372036854775807) = 9223372036854775807
//       Abs(109013) = 109013
//       Abs(0) = 0
//       Abs(-6871982) = 6871982
//       Unable to calculate the absolute value of -9223372036854775808.

open System

let values = 
    [ Int64.MaxValue; 109013; 0; -6871982; Int64.MinValue ]

for value in values do
    try
        // The 'abs' function may be used instead.
        printfn $"Abs({value}) = {Math.Abs value}"
    with :? OverflowException ->
        printfn $"Unable to calculate the absolute value of {value}."

// The example displays the following output:
//       Abs(9223372036854775807) = 9223372036854775807
//       Abs(109013) = 109013
//       Abs(0) = 0
//       Abs(-6871982) = 6871982
//       Unable to calculate the absolute value of -9223372036854775808.

Module Example
   Public Sub Main()
      Dim values() As Long = { Int64.MaxValue, 109013, 0, -6871982, Int64.MinValue }
      For Each value As Long In values
         Try
            Console.WriteLine("Abs({0}) = {1}", value, Math.Abs(value))
         Catch e As OverflowException
            Console.WriteLine("Unable to calculate the absolute value of {0}.", _
                              value)
         End Try   
      Next
   End Sub
End Module
' The example displays the following output:
'       Abs(9223372036854775807) = 9223372036854775807
'       Abs(109013) = 109013
'       Abs(0) = 0
'       Abs(-6871982) = 6871982
'       Unable to calculate the absolute value of -9223372036854775808.

Remarks

The absolute value of an Int64 is its numeric value without its sign. For example, the absolute value of both 123 and -123 is 123.

Applies to

Abs(IntPtr)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Returns the absolute value of a native signed integer.

public:
 static IntPtr Abs(IntPtr value);
public static nint Abs (nint value);
public static IntPtr Abs (IntPtr value);
static member Abs : nativeint -> nativeint
Public Shared Function Abs (value As IntPtr) As IntPtr

Parameters

value
IntPtr

nint

nativeint

A number that is greater than MinValue, but less than or equal to MaxValue.

Returns

IntPtr

nint

nativeint

A native signed integer, x, such that 0 ≤ x ≤ MaxValue.

Applies to

Abs(SByte)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Important

This API is not CLS-compliant.

Returns the absolute value of an 8-bit signed integer.

public:
 static System::SByte Abs(System::SByte value);
[System.CLSCompliant(false)]
public static sbyte Abs (sbyte value);
[<System.CLSCompliant(false)>]
static member Abs : sbyte -> sbyte
Public Shared Function Abs (value As SByte) As SByte

Parameters

value
SByte

A number that is greater than SByte.MinValue, but less than or equal to SByte.MaxValue.

Returns

SByte

An 8-bit signed integer, x, such that 0 ≤ x ≤ SByte.MaxValue.

Attributes
CLSCompliantAttribute

Exceptions

OverflowException

value equals SByte.MinValue.

Examples

The following example uses the Abs(SByte) method to get the absolute value of a number of SByte values.

sbyte[] values = { SByte.MaxValue, 98, 0, -32, SByte.MinValue };
foreach (sbyte value in values)
{
   try {
      Console.WriteLine($"Abs({value}) = {Math.Abs(value)}");
   }
   catch (OverflowException) {
      Console.WriteLine("Unable to calculate the absolute value of {0}.",
                        value);
   }
}

// The example displays the following output:
//       Abs(127) = 127
//       Abs(98) = 98
//       Abs(0) = 0
//       Abs(-32) = 32
//       Unable to calculate the absolute value of -128.

open System

let values = 
    [ SByte.MaxValue; 98y; 0y; -32y; SByte.MinValue ]

for value in values do
    try
        // The 'abs' function may be used instead.
        printfn $"Abs({value}) = {Math.Abs value}"
    with :? OverflowException ->
        printfn $"Unable to calculate the absolute value of {value}."

// The example displays the following output:
//       Abs(127) = 127
//       Abs(98) = 98
//       Abs(0) = 0
//       Abs(-32) = 32
//       Unable to calculate the absolute value of -128.

Module Example
   Public Sub Main()
      Dim values() As SByte = { SByte.MaxValue, 98, 0, -32, SByte.MinValue }
      For Each value As SByte In values
         Try
            Console.WriteLine("Abs({0}) = {1}", value, Math.Abs(value))
         Catch e As OverflowException
            Console.WriteLine("Unable to calculate the absolute value of {0}.", _
                              value)
         End Try   
      Next
   End Sub
End Module
' The example displays the following output:
'       Abs(127) = 127
'       Abs(98) = 98
'       Abs(0) = 0
'       Abs(-32) = 32
'       Unable to calculate the absolute value of -128.

Remarks

The absolute value of a signed byte is its numeric value without its sign. For example, the absolute value of both 12 and -12 is 12.

Applies to

Abs(Single)

Source:
Math.cs
Source:
Math.cs
Source:
Math.cs

Returns the absolute value of a single-precision floating-point number.

public:
 static float Abs(float value);
public static float Abs (float value);
static member Abs : single -> single
Public Shared Function Abs (value As Single) As Single

Parameters

value
Single

A number that is greater than or equal to Single.MinValue, but less than or equal to Single.MaxValue.

Returns

Single

A single-precision floating-point number, x, such that 0 ≤ x ≤ Single.MaxValue.

Examples

The following example uses the Abs(Single) method to get the absolute value of a number of Single values.

float[] values= { Single.MaxValue, 16.354e-12F, 15.098123F, 0F,
                  -19.069713F, -15.058e17F, Single.MinValue };
foreach (float value in values)
   Console.WriteLine($"Abs({value}) = {Math.Abs(value)}");

// The example displays the following output:
//       Abs(3.402823E+38) = 3.402823E+38
//       Abs(1.6354E-11) = 1.6354E-11
//       Abs(15.09812) = 15.09812
//       Abs(0) = 0
//       Abs(-19.06971) = 19.06971
//       Abs(-1.5058E+18) = 1.5058E+18
//       Abs(-3.402823E+38) = 3.402823E+38

open System

let values = 
    [ Single.MaxValue; 16.354e-12f; 15.098123f; 0f
      -19.069713f; -15.058e17f; Single.MinValue ]

for value in values do
    // The 'abs' function may be used instead.
    printfn $"Abs({value}) = {Math.Abs value}"

// The example displays the following output:
//       Abs(3.402823E+38) = 3.402823E+38
//       Abs(1.6354E-11) = 1.6354E-11
//       Abs(15.09812) = 15.09812
//       Abs(0) = 0
//       Abs(-19.06971) = 19.06971
//       Abs(-1.5058E+18) = 1.5058E+18
//       Abs(-3.402823E+38) = 3.402823E+38

Module Example
   Public Sub Main()
      Dim values() As Single = { Single.MaxValue, 16.354e-12, 15.098123, 0, _
                                  -19.069713, -15.058e17, Single.MinValue }
      For Each value As Single In values
         Console.WriteLine("Abs({0}) = {1}", value, Math.Abs(value))
      Next
   End Sub
End Module
' The example displays the following output:
'       Abs(3.402823E+38) = 3.402823E+38
'       Abs(1.6354E-11) = 1.6354E-11
'       Abs(15.09812) = 15.09812
'       Abs(0) = 0
'       Abs(-19.06971) = 19.06971
'       Abs(-1.5058E+18) = 1.5058E+18
'       Abs(-3.402823E+38) = 3.402823E+38

Remarks

The absolute value of a Single is its numeric value without its sign. For example, the absolute value of both 1.2e-03 and -1.2e03 is 1.2e03.

If value is equal to NegativeInfinity or PositiveInfinity, the return value is PositiveInfinity. If value is equal to NaN, the return value is NaN.

Applies to