What is the floor() function in Dart?

Overview

The floor() function in Dart returns the next largest integer that is less than or equal to a specified number.

The figure below shows the mathematical representation of the floor() function.

Mathematical representation of the "floor()" function

Syntax

number.floor()

Parameter

This function does not require a parameter.

Return value

The floor() function returns the next largest integer less than or equal to the number.

Code example

The code below demonstrates the use of the floor() function in Dart.

import 'dart:convert';
void main() {
    //positive number 
    print("The value of (1.5).floor(): ${(1.5).floor()} ");
    // negative number 
    print("The value of (-5.5).floor(): ${(-5.5).floor()} ");
    //zero
    print("The value of (0).floor(): ${(0).floor()}");
}

Explanation

  • Line 5: We calculate the floor value of the positive number 1.5 using floor().
  • Line 8: We calculate the floor value of the negative number -5.5 using floor().
  • Line 11: We calculate the floor value 0 using floor().

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