Kernel.ceil

You're seeing just the function ceil, go back to Kernel module for more information.
Link to this function

ceil(number)

View Source (since 1.8.0)

Specs

ceil(number()) :: integer()

Returns the smallest integer greater than or equal to number.

If you want to perform ceil operation on other decimal places, use Float.ceil/2 instead.

Allowed in guard tests. Inlined by the compiler.