Flr

flr( num )

Returns the integer portion (the "floor") of a number.

num

The number.

For positive numbers, the flr() function returns the integer portion of a number, such as 5 for 5.8.

More generally, flr() returns the closest integer to the number that is less than the number. For negative numbers, the result is more negative.

Examples

print(flr(5.9))   -- 5

print(flr(-5.2))  -- -6

print(flr(7))     -- 7

print(flr(-7))    -- -7

Pico-8 does not have a corresponding "ceiling" function. Here is an implementation that uses flr():

function ceil(num)
  if (flr(num) == num) return num
  return flr(num) + 1
end

print(ceil(5.9))   -- 6

print(ceil(-5.2))  -- -5

print(ceil(7))     -- 7

print(ceil(-7))    -- -7

A more concise "ceiling" function: -flr(-num)

function ceil(num)
  return -flr(-num)
end

print(-flr(-(5.9)))    -- 6

print(-flr(-(-5.2)))    -- -5

print(-flr(-(7)))  -- 7

print(-flr(-(-7)))   -- -7

See also

• Math