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Munair

Because is not a test at run-time but only a test at compilation-time. (this test only works with a literal value passed to CBOOL) Yes, I understand that, but from an end user's (source code) point of view the distinction isn't logical. So either the test should be extended to run-time or it should...

Munair

deltarho[1859] wrote: ↑Feb 23, 2022 9:04 I prefer not to see Paul sacked. Furthermore, I would think better of him if he resigned. Being a moderator is by no means easy, and not everyone is up to it. Paul will still be respected as a member. Well, he certainly will be by me.

I second that.

Munair

@deltarho:

Code: Select all

#define IsTrue(x) iif(x <> 0, -1, 0)
#define IsFalse(x) iif(x <> 0, 0, -1)

Munair

Thanks SARG!

I just tested your code (replacing mine in the lib). Indeed, same result and slightly faster.

Code: Select all

_sb_cbool:
    cmp      eax, 0
    setne    al
    neg      al
    movsx    eax, al
    ret

Result:

Code: Select all

main do
  print(cbool(10 * 5 + 3)); ' -1
  print(cbool(10 * 5 + 3 - 53)); ' 0
end

Munair

IMO, Cast() performs the same operation as CBool(), i.e. intended conversion. For example when casting UByte to Byte, no warning is given: Dim As Byte b = Cast(uByte, 255) print b ' -1 I think FB should at least make an exception for Cast(BOOLEAN, x) because no other datatype will fit a 1-bit dataty...

Munair

fxm wrote: ↑Feb 23, 2022 7:08 Dim As Byte b = Cast(Byte, 256) also induces a warning.

Of course it does, an so does Dim As Byte b = Cast(UByte, 256), which is a correct warning.

But booleans do not have a range, so ANY number - if so intended - should be converted to 0 or -1 without warning.

Munair

To avoid double posts, see the conversation here: viewtopic.php?p=290178#p290178

Munair

OK, then I propose the cbool() function be redefined to something much more simple (example from SharpBASIC library): _sb_cbool: push edx push eax mov eax, 0 pop edx cmp edx, eax je .__L0 mov eax, -1 .__L0: pop edx ret Without cast, it converts any numerical expression result or value (whatever eax ...

Munair

So a conversion overflow warning is applied as for any other numeric datatype (Byte, Short, ...) only at compile time (only for a literal value). So why does dim a as byte = 10: print cbool(a) not give a conversion warning? It would seem more appropriate here with an explicit data type than with a ...

Munair

oyster wrote: ↑Feb 23, 2022 6:56 I really HATE BASIC's MID$/LEFT$/RIGHT$ which are too clumsy, hard to perform some operations

Pascal has a similar function Copy(). With the definitions of strings and how they are represented by variables in these languages, how do you propose string manipulation should be done?

Munair

The definition under the hood of a Boolean is an 1-bit integer. That should not apply to a function converting a numeric expression to boolean. IOW, Passing 10 to cbool() should not be hindered by the definition of a boolean, but rather converting it to it. Even more so when: dim a as byte = 10: pr...

Munair

deltarho[1859] wrote: ↑Feb 23, 2022 5:42 In fact, we get this warning with CBool(10).

Indeed, when converting a variable, it's ok.

Code: Select all

dim a as integer = 10
print cbool(a)

So the problem seems to be the constant value. Interesting.

Munair

I asked this forum if moderators actually communicate guidelines with each other when making decisions, or if they act on their own. CoderJeff replied to my post saying that, "of course, we communicate." https://www.freebasic.net/forum/viewtopic.php?p=290031#p290031 The fact that Imortis d...

Munair

It seems that jj2007 thought that he was to get a month's suspension. That is what paul doe told him and later confirmed: https://www.freebasic.net/forum/viewtopic.php?p=290091#p290091 If he remains permanently banned, I will declare war on the moderators. This may be about one moderator in particu...

Munair

On the link Dodicat provided, JJ has posted a screenshot that indeed says that he has been permanently banned. The fact that some moderators are unaware of this means that paul doe may have some explaining to do. If he indeed banned JJ permanently without saying so or consulting the other mods, then...

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