Single.IsPositiveInfinity() Method in C# with Examples

Last Updated : 11 Jul, 2025
In C#, Single.IsPositiveInfinity(Single) is a Single struct method. This method is used to check whether a specified floating-point value evaluates to positive infinity or not. In some floating point operation, it is possible to obtain a result that is positive infinity. For Example: If any positive value is divided by zero, it results in positive infinity.
Syntax: public static bool IsPositiveInfinity (float f); Parameter: f: It is a single-precision floating-point number of type System.Single.
Return Type: This function return a Boolean value True, if specified value evaluates to positive infinity, otherwise return False. Example: To demonstrate the Single.IsPositiveInfinity(Single) Method CSHARP
// C# program to illustrate the
// Single.IsPositiveInfinity(Single)
// Method
using System;

class GFG {

    // Main method
    static public void Main()
    {

        // Dividing a Positive number by zero
        // results in positive infinity.

        // Dividing a number directly by 0
        // produces an error
        // So 0 is stored in a variable first

        float zero = 0.0f;
        float value = 10.0f;
        float result = value / zero;

        // Printing result
        Console.WriteLine(result);

        // Check result using IsPositiveInfinity() Method
        Console.WriteLine(Single.IsPositiveInfinity(result));

        // Floating point operation that exceeds
        // Single.MaxValue is Positive Infinity
        result = (1.402823E+38f + ((float)9.985e307));

        // Printing result
        Console.WriteLine(result);

        // Check result using IsPositiveInfinity() Method
        Console.WriteLine(Single.IsPositiveInfinity(result));
    }
}
Output:
Infinity
True
Infinity
True
Note: Floating-point operation return PositiveInfinity to indicate an overflow condition. Reference:
Comment

Explore