Mailing lists / fpc-pascal / 2009-07
"VAL" and i18n
7 messages · 3 people ·
- Jonas Maebe 4
- Torsten Bonde Christiansen 2
- Michael Van Canneyt 1
Reply by email Subscribe to this list Your subscription
Read-only archive. Use j and k to move between messages.
Torsten Bonde Christiansen wroteAfter fiddling around with some local text i came across something odd. Is it true that the "val" function does not care for person i18n settings?
Yes.
Show quoted text 5 lines
Trying to validate "1,2" (notice the comma - danish decimal separtor
style) with val resulted in returning code = 2, i.e. that comma is
the problem. Stepping through the code, it seem that in
"fpc_Val_Real_ShortStr" the decimal separator is hardcoded to ".".
Is this a bug or is this just the way "val" is intended to work?
It is the way val is intended to work. Use http://www.freepascal.org/docs-html/rtl/sysutils/floattostr.html instead if you want to make use of the locale settings (do not forget to use the "clocale" unit in your program if you are on a Unix platform to initialise the locale settings, or manually specify a TFormatSettings parameter to floattostr).
Jonas
Jonas Maebe wrote 7 lines
> Trying to validate "1,2" (notice the comma - danish decimal
> separtor style) with val resulted in returning code = 2, i.e. that
> comma is the problem. Stepping through the code, it seem that in
> "fpc_Val_Real_ShortStr" the decimal separator is hardcoded to ".".
> Is this a bug or is this just the way "val" is intended to work?
It is the way val is intended to work. Use http://www.freepascal.org/docs-html/rtl/sysutils/floattostr.html
Oops, it's http://www.freepascal.org/docs-html/rtl/sysutils/strtofloat.html of course. Or http://www.freepascal.org/docs-html/rtl/sysutils/trystrtofloat.html if you don't want an exception if the conversion fails.
Jonas
Show quoted text 5 lines
Oops, it's
http://www.freepascal.org/docs-html/rtl/sysutils/strtofloat.html of
course. Or
http://www.freepascal.org/docs-html/rtl/sysutils/trystrtofloat.html if
you don't want an exception if the conversion fails.
It look like "Function TryStrToFloat(Const S : String; Out Value: Extended): Boolean" (extended version) is not documented. Is this because it's a 2.3.1 function or because it is not posible on all CPU's?
-Torsten.
Torsten Bonde Christiansen wrote 6 lines
>
> Oops, it's http://www.freepascal.org/docs-html/rtl/sysutils/strtofloat.html
> of course. Or http://www.freepascal.org/docs-html/rtl/sysutils/trystrtofloat.html
> if you don't want an exception if the conversion fails.
It look like "Function TryStrToFloat(Const S : String; Out Value:
Extended): Boolean" (extended version) is not documented.
http://www.freepascal.org/docs-html/rtl/sysutils/trystrtofloat.html
Jonas
It look like "Function TryStrToFloat(Const S : String; Out Value: Extended): Boolean" …
Torsten Bonde Christiansen wroteIt look like "Function TryStrToFloat(Const S : String; Out Value: Extended): Boolean" (extended version) is not documented. Is this because it's a 2.3.1 function or because it is not posible on all CPU's?
Sorry, the latter. It's between an {$ifdef FPC_HAS_TYPE_EXTENDED}, which probably makes the code documenter skip it.
Jonas
Jonas Maebe wrote 9 lines
On 24 Jul 2009, at 10:30, Torsten Bonde Christiansen wrote:
> It look like "Function TryStrToFloat(Const S : String; Out Value:
> Extended): Boolean" (extended version) is not documented. Is this because
> it's a 2.3.1 function or because it is not posible on all CPU's?
Sorry, the latter. It's between an {$ifdef FPC_HAS_TYPE_EXTENDED}, which
probably makes the code documenter skip it.
I'll adapt the documentation generator so it enables these defines. There is also single, comp and maybe even some others.
Michael.