# Single.IsNegativeInfinity() Method in C# with Examples

In C#, Single.IsNegativeInfinity(Single) is a Single struct method. This method is used to check whether a specified floating-point value evaluates to negative infinity or not. In some floating point operation, it is possible to obtain a result that is negative infinity. For Example: If any negative value is divided by zero, it results in negative infinity.

Syntax: public static bool IsNegativeInfinity (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 negative infinity, otherwise return False.

Example: To demonstrate the Single.IsNegativeInfinity(Single) Method:

 `// C# program to illustrate the ` `// Single.IsNegativeInfinity(Single) ` `// Method ` `using` `System; ` ` `  `class` `GFG { ` ` `  `    ``// Main method ` `    ``static` `public` `void` `Main() ` `    ``{ ` ` `  `        ``// Dividing a negative number by zero ` `        ``// results in Negative infinity. ` ` `  `        ``// Dividing a number directly by 0 ` `        ``// produces an error ` `        ``// So 0 is stored in a variable first ` ` `  `        ``float` `zero = 0.0f; ` `        ``float` `value = -5f; ` `        ``float` `result = value / zero; ` ` `  `        ``// Printing result ` `        ``Console.WriteLine(result); ` ` `  `        ``// Check result using IsNegativeInfinity() Method ` `        ``Console.WriteLine(Single.IsNegativeInfinity(result)); ` ` `  `        ``// Result of floating point operation ` `        ``// that is less than Single.MinValue ` `        ``// is Negative Infinity ` ` `  `        ``result = Single.MinValue * 7.9f; ` ` `  `        ``// Printing result ` `        ``Console.WriteLine(result); ` ` `  `        ``// Check result using IsNegativeInfinity() Method ` `        ``Console.WriteLine(Single.IsNegativeInfinity(result)); ` `    ``} ` `} `

Output:

```-Infinity
True
-Infinity
True
```

Note:

• The result of any floating point operation that is less than Single.MinValue is considered as Negative Infinity.
• Floating-point operation return PositiveInfinity or NegativeInfinity to indicate the overflow condition.

Reference:

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