While performing operations on numbers we might sometimes want to use 32-bit numbers. JavaScript internally uses 64-bit floating point numbers and not 32-bit. So checking equality of 32-bit numbers with 64-bit numbers may fail. JavaScript provides us with a built-in function to cast a 64-bit floating point number to 32-bit. The Math.fround() function in JavaScript is used to find the nearest 32-bit single-precision float representation of a given Number. Math.fround() function in JavaScript is also used to cast the 64-bit float to a 32-bit float.
Syntax:
Math.fround(value)
Parameters: This function accepts a single parameter value . This parameter represents the number for which we want to find the nearest 32-bit single precision float representation.
Return Value: The Math.fround() function returns the nearest 32-bit single precision float representation of the given number.
Below examples illustrates the Math.fround() function in JavaScript:
- Example 1: When a positive number is passed as a parameter:
<
script
type
=
"text/javascript"
>
document.write(Math.fround(3));
</
script
>
chevron_rightfilter_noneOutput:
3
- Example 2: When a positive number with decimal places is passed as a parameter:
<
script
type
=
"text/javascript"
>
document.write(Math.fround(3.345));
</
script
>
chevron_rightfilter_noneOutput:
3.3450000286102295
- Example 3: When a negative number is passed as a parameter:
<
script
type
=
"text/javascript"
>
document.write(Math.fround(-3));
</
script
>
chevron_rightfilter_noneOutput:
-3
- Example 4: When a negative number with decimal places is passed as a parameter:
<
script
type
=
"text/javascript"
>
document.write(Math.fround(-3.345));
</
script
>
chevron_rightfilter_noneOutput:
-3.3450000286102295
- Example 5: When zero is passed as a parameter:
<
script
type
=
"text/javascript"
>
document.write(Math.fround(0));
</
script
>
chevron_rightfilter_noneOutput:
0
Supported Browsers: The browsers supported by JavaScript Math.fround( ) function are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari