BigInteger.IComparable.CompareTo(Object) Method
Definition
Important
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Compares this instance to a specified object and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.
virtual int System.IComparable.CompareTo(System::Object ^ obj) = IComparable::CompareTo;
int IComparable.CompareTo (object obj);
abstract member System.IComparable.CompareTo : obj -> int
override this.System.IComparable.CompareTo : obj -> int
Function CompareTo (obj As Object) As Integer Implements IComparable.CompareTo
Parameters
- obj
- Object
The object to compare.
Returns
A signed integer that indicates the relationship of the current instance to the obj
parameter, as shown in the following table.
Return value | Description |
---|---|
Less than zero | The current instance is less than obj . |
Zero | The current instance equals obj . |
Greater than zero | The current instance is greater than obj , or the obj parameter is null . |
Implements
Exceptions
obj
is not a BigInteger.
Examples
The following example calls the CompareTo(Object) method to compare a BigInteger value with each element in an object array:
object[] values = { BigInteger.Pow(Int64.MaxValue, 10), null,
12.534, Int64.MaxValue, BigInteger.One };
BigInteger number = UInt64.MaxValue;
foreach (object value in values)
{
try {
Console.WriteLine("Comparing {0} with '{1}': {2}", number, value,
number.CompareTo(value));
}
catch (ArgumentException) {
Console.WriteLine("Unable to compare the {0} value {1} with a BigInteger.",
value.GetType().Name, value);
}
}
// The example displays the following output:
// Comparing 18446744073709551615 with '4.4555084156466750133735972424E+189': -1
// Comparing 18446744073709551615 with '': 1
// Unable to compare the Double value 12.534 with a BigInteger.
// Unable to compare the Int64 value 9223372036854775807 with a BigInteger.
// Comparing 18446744073709551615 with '1': 1
let values =
[| BigInteger.Pow(Int64.MaxValue, 10)
Unchecked.defaultof<bigint>
bigint 12.534
Int64.MaxValue
BigInteger.One |]
let number = bigint UInt64.MaxValue
for value in values do
try
printfn $"Comparing {number} with '{value}': {number.CompareTo value}"
with :? ArgumentException as e ->
printfn $"Unable to compare the {value.GetType().Name} value {value} with a BigInteger."
// The example displays the following output:
// Comparing 18446744073709551615 with '4.4555084156466750133735972424E+189': -1
// Comparing 18446744073709551615 with '': 1
// Unable to compare the Double value 12.534 with a BigInteger.
// Unable to compare the Int64 value 9223372036854775807 with a BigInteger.
// Comparing 18446744073709551615 with '1': 1
Dim values() As Object = { BigInteger.Pow(Int64.MaxValue, 10), Nothing,
12.534, Int64.MaxValue, BigInteger.One }
Dim number As BigInteger = UInt64.MaxValue
For Each value As Object In values
Try
Console.WriteLine("Comparing {0} with '{1}': {2}", number, value,
number.CompareTo(value))
Catch e As ArgumentException
Console.WriteLine("Unable to compare the {0} value {1} with a BigInteger.",
value.GetType().Name, value)
End Try
Next
' The example displays the following output:
' Comparing 18446744073709551615 with '4.4555084156466750133735972424E+189': -1
' Comparing 18446744073709551615 with '': 1
' Unable to compare the Double value 12.534 with a BigInteger.
' Unable to compare the Int64 value 9223372036854775807 with a BigInteger.
' Comparing 18446744073709551615 with '1': 1
Remarks
The obj
parameter must be one of the following:
An object whose run-time type is BigInteger.
An Object variable whose value is
null
. If the value of theobj
parameter isnull
, the method returns 1, which indicates that the current instance is greater thanobj
.
Applies to
See also
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