[Scummvm-devel] Symbian: proper sscanf implementation

[Федор]

  " - It does not respect the current locale and assumes"
On Symbian only LC_ALL locale used in C-apps. Changind locale doesn't work by libc design. But dot and comma as decimal separator may used at same time. Add in todo list

StrtoF - I want write strtoD. My mistake

" - It does not support hexadecimal numbers.  - It does not support having an exponent (power of 10 for decimal numbers and power of 2 for hexadecimal numbers)."
If Zvision requred - that will be added.


Fedor Strizhnev
Федор Стрижнёв.

>Аўторак, 22 верасня 2015, 20:23 +01:00 ад Thierry Crozat <criezy at scummvm.org>:
>
>Hi,
>
>I only had a quick look but your implementation of  strtof__  does not behave in the expected way in several respects:
>  - It does not respect the current locale and assumes the decimal point separator is a dot. In some locale, for example in French (and I believe in Russian?) the decimal point separator would bd a coma. To be honest I find it a pain, but C function such as strtof and sscanf respect the current locale.
>  - It does not support hexadecimal numbers.
>  - It does not support having an exponent (power of 10 for decimal numbers and power of 2 for hexadecimal numbers).
>  - You don't handle the "nan", "inf" and "infinity" case either.
>
>So for example all the followings are not correctly parsed (not even considering the locale issue):
>-1.234e+12
>0x12C4.0Fp-1B2
>NAN
>INF
>
>The locale, hexadecimal and nan/inf cases are maybe not an issue for ScummVM (?). Not supporting the exponent might be a bigger issue.
>But otherwise it looks like the code would work.
>
>Thierry
>
>
>On 22 Sep 2015, at 10:42, Федор < fedor_qd at mail.ru > wrote:
>>Hi! I need fresh eye on my code.
>>Some times ago I found Symbian sscanf don't parses floating point numbers in strings.
>>I'm using as start point sscanf implementation in tizen port. I try strtod() in libc and find it seems also broken.
>>I write own strod() but it works bad.
>>Error checking missing now.
>>Fedor Strizhnev
>>Федор Стрижнёв.
>>
>>
>><main.cpp> ------------------------------------------------------------------------------
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>>Scummvm-devel mailing list
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>

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