Node.js Buffer.readFloatBE() Method
The Buffer.readFloatBE() Method is an inbuilt application programming interface of class Buffer within the Buffer module which is used to read big endian 32 bits floating-point value to an allocated buffer at the specified offset.
Syntax:
Buffer.readFloatBE( offset )
Parameters: This method accepts single parameter offset which specifies the number of bytes to skip before read. The value of offset lies 0 <= offset <= Buffer.length – 4. It’s default value is 0.
Return Value: It returns an integer value in big endian format.
Below examples illustrate the use of buf.readFloatBE() Method in Node.js:
Example 1:
// Node program to demonstrate the // Buffer.readFloatBE(INTEGER) method // Creating a buffer of given size const buf = Buffer.from([10, 20, 30, 40, 50, 60, 70, 80]); // Display the result console.log( "Functions of Buffer.readFloatBE(int)" ); console.log(buf.readFloatBE(0)) console.log(buf); |
Output:
Functions of Buffer.readFloatBE(int) 7.13161255447549e-33 <Buffer 0a 14 1e 28 32 3c 46 50>
Example 2:
// Node program to demonstrate the // Buffer.readFloatBE(INTEGER) method // Creating a buffer of given size const buf = Buffer.from([100, 200, 300, 400, 500, 600, 700, 800]); // Display the result console.log( "Functions of Buffer.readFloatBE(int)" ); console.log(buf.readFloatBE(5)) console.log(buf); |
Output:
Functions of Buffer.readFloatBE(int) internal/buffer.js:72 throw new ERR_OUT_OF_RANGE(type || 'offset', ^ RangeError [ERR_OUT_OF_RANGE]: The value of "offset" is out of range. It must be >= 0 and <= 4. Received 5 . . .
Note: The above program will compile and run by using the node index.js
command.
Reference: https://nodejs.org/docs/latest-v11.x/api/buffer.html#buffer_buf_readfloatbe_offset
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