# StrictMath log10() Method in Java

The java.lang.StrictMath.log10() is an inbuilt method in Java which accepts a double value as parameter and returns the base 10 logarithm of that value. Thus calculating the base 10 logarithmic value for a given parameter.

Syntax:

`public static double log10(double val)`

Parameters: The function accepts a double value, val as parameter whose base 10 logarithm is calculated.

Return Values: This function returns the base 10 logarithm of val based on the following conditions:

• The function returns NaN if argument passed is NaN or less than zero
• The function returns positive infinity if argument passed is positive infinity
• The function returns negative infinity if the argument passed is zero.
• The function returns a if the argument passed is Examples:

```Input : 2018.0
Output : 7.609862200913554

Input : 1000000.0
Output : 6.0
```

Below programs illustrate the working of java.lang.StrictMath.log10() :

Program 1: In this program , finite non-zero arguments are passed as parameter.

 `// Java Program to illustrate  ` `// StrictMath.log10() function  ` ` `  `import` `java.io.*; ` `import` `java.lang.*; ` ` `  `class` `GFG { ` `     ``public` `static` `void` `main(String[] args) { ` `     `  `      ``double` `val1 = ``2018.00567` `, val2 = ``100000.0``;  ` ` `  `      ``// Argument passed is infinite ` `      ``System.out.println(``"Base 10 Logarithm of "` `+ val1 +  ` `                    ``" is "` `+ StrictMath.log10(val1)); ` ` `  `    ``// Passing zero as argument ` `      ``System.out.println(``"Base 10 Logarithm of "``+ val2  ` `                      ``+``" is "``+ StrictMath.log10(val2)); ` ` `  `   ``} ` `} `

Output:

```Base 10 Logarithm of 2018.00567 is 3.3049223821418496
Base 10 Logarithm of 100000.0 is 5.0
```

Program 2: In this program, infinity and zero are passed as parameter.

 `// Java Program to illustrate ` `// StrictMath.log10() function  ` ` `  `import` `java.io.*; ` `import` `java.lang.*; ` ` `  `class` `GFG { ` `     ``public` `static` `void` `main(String[] args) { ` `     `  `      ``double` `val = ``2018``/(``0.0``);  ` ` `  `      ``System.out.println(``"Base 10 Logarithm of "` `+ val +  ` `                    ``" is "` `+ StrictMath.log10(val)); ` `   `  `      ``System.out.println(``"Base 10 Logarithm of 0 is "` `                            ``+ StrictMath.log10(``0``)); ` ` `  `   ``} ` `} `

Output:

```Base 10 Logarithm of Infinity is Infinity
Base 10 Logarithm of 0 is -Infinity
```

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