Math: Add floor() and ceiling() functions

[IdeasVacuum]

http://en.wikipedia.org/wiki/Floor_and_ ... _functions

[Demivec]

Isn't this already implemented?

Code: Select all

Debug Round(f.f, #PB_Round_Up)
Debug Round(f.f, #PB_Round_Down)

or if you prefer:

Code: Select all

Macro floor(x)
  Round(x, #PB_Round_Down)
EndMacro

Macro ceiling(x)
  Round(x, #PB_Round_Up)
EndMacro

For i = 1 To 40
  f.f = (i - 20) / 4
  Debug "i: " + StrF(f) + ", up:" + Str(ceiling(f)) + ", down:" + Str(floor(f))
Next

[IdeasVacuum]

It does not seem to have the precision required when using doubles. I have a work-around using strings and often the value is going to end-up being a string anyway.

[Little John]

It does not seem to have the precision required when using doubles.

Can you please post some code that demonstrates the problem?
I'm using macros like the ones Demivec posted, and never encountered any problems.

[Demivec]

It does not seem to have the precision required when using doubles. I have a work-around using strings and often the value is going to end-up being a string anyway.

Do you mean that the value of the number hovers around the integer value, sometimes higher and sometimes lower, so that when you round it up or down it goes the wrong way?

If this is the case then perhaps using some form of fixed-decimal may be what you need.

[IdeasVacuum]

Yes, I lost patience with it - I was at that time converting a simple, short piece of C++ code. However, the strings method is an altogether better solution for output.