floor

Rounds a number down, to the given number of decimal places. A negative precision rounds down to tens, hundreds and so on: floor(4060, -2) returns 4000.

Rounding goes toward negative infinity, not toward zero, so a negative value falls: floor(-4.006) returns -5.

The value is shifted through its shortest string representation rather than multiplied by a power of ten, so the usual floating-point surprises do not happen: floor(1.1, 1) returns 1.1, not 1.0.

NaN and the infinities are returned as they are.

This is the "always down" companion of round; ceil is the "always up" one. All three take the same arguments.

Parameters

Name	Type	Required	Default
value	numbernumint	●	–
The number to round down.
precision	numberint	–	0
Number of decimal places to round to. Must be a whole number; a negative value rounds to tens, hundreds and so on.

Returns

number

num

int

Examples

floor(4.006); // Returns 4
floor(-4.006); // Returns -5
floor(0.046, 2); // Returns 0.04
floor(4060, -2); // Returns 4000
floor(1.1, 1); // Returns 1.1

floor(4.006); // Returns 4
floor(-4.006); // Returns -5
floor(0.046, 2); // Returns 0.04
floor(4060, -2); // Returns 4000
floor(1.1, 1); // Returns 1.1

floor(4.006)  # Returns 4
floor(-4.006)  # Returns -5
floor(0.046, 2)  # Returns 0.04
floor(4060, -2)  # Returns 4000
floor(1.1, 1)  # Returns 1.1