Feature #12245: optional parameter ndigits to Integer#floor, Integer#ceil, Float#floor, Float#ceil

• Status: Closed
• Assignee: -
• Target version: -

[nobu (Nobuyoshi Nakada)]

Related to [Feature #12244].
I think that Integer#floor, Integer#ceil, Float#floor, and Float#ceil should have optional parameter ndigits, as well as round methods.

https://github.com/ruby/ruby/compare/trunk...nobu:feature/Integer%23floor-ndigits
https://github.com/ruby/ruby/compare/trunk...nobu:feature/Integer%23ceil-ndigits
https://github.com/ruby/ruby/compare/trunk...nobu:feature/Float%23floor-ndigits
https://github.com/ruby/ruby/compare/trunk...nobu:feature/Float%23ceil-ndigits

[shevegen (Robert A. Heiler)]

I think that would make sense.

I usually add an extra method call afterwards to round it manually (or, if not .round then to use it as a string and sprintf, % or .ljust / .rjust output it).

I should also note that newcomers often ask on IRC how to round / display something properly, so anything that may be of help here, is good I think. (It will be typical question such as how to display a float like 3.0 as 3.000, if only for properly padded output with other float values that will have 3 slots past the . like 2.983 and so on)

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r54562.

---

numeric.c: int_ceil

• numeric.c (int_ceil): add an optional parameter, digits, as
  well as Integer#round. [Feature #12245]