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Weird result with Format(); [message #60301]

Tue, 14 November 2023 20:53

forlano
Messages: 1185
Registered: March 2006
Location: Italy

Senior Contributor

Hello,

I have spent considerable amount of time to understand what it is happening but with no result (U++ 17080 and clang in debug mode).

#include <Core/Core.h>

using namespace Upp;

CONSOLE_APP_MAIN
{
	float n = 3.0;
	String sscore;
	sscore = Format("%f", n);
	Cout()<<sscore<<"\n" ;
	
	sscore = AsString(n);
	Cout()<<sscore<<"\n" ;	
}

Result:
<N/A 'f' for type 13>
3

In release mode I get
3f
3

Does format has changed the way to work? It seems no longer recognise the "f" specifier.
Thanks,

Luigi

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Re: Weird result with Format(); [message #60302 is a reply to message #60301]

Tue, 14 November 2023 21:37

forlano
Messages: 1185
Registered: March 2006
Location: Italy

Senior Contributor

forlano wrote on Tue, 14 November 2023 20:53

Result:
<N/A 'f' for type 13>
3

In release mode I get
3f
3

on U++ 17045 I get the expected

3.000000
3

[Updated on: Tue, 14 November 2023 21:38]

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Re: Weird result with Format(); [message #60307 is a reply to message #60302]

Wed, 15 November 2023 11:10

forlano
Messages: 1185
Registered: March 2006
Location: Italy

Senior Contributor

On the same machine I have installed the today 17088 that shows the same problem.
Then I have installed the stable 17045 that has not this problem.

Can somebody else confirm such problem?
Thanks,

Luigi

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Re: Weird result with Format(); [message #60312 is a reply to message #60307]

Fri, 17 November 2023 08:24

koldo
Messages: 3359
Registered: August 2008

Senior Veteran

Quote:

Can somebody else confirm such problem?

Yes, I get the same in Windows and Linux.

Best regards
Iñaki

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Re: Weird result with Format(); [message #60313 is a reply to message #60307]

Fri, 17 November 2023 18:41

Tom1
Messages: 1212
Registered: March 2007

Senior Contributor

Hi,

I can confirm this too. I guess this is an unfortunate side effect of float recently gaining Value support.

In Core/Format.cpp it needs one or both of these additions:

...
void RegisterNumberFormatter(const char *id, Formatter f)
{
	RegisterFormatter(DOUBLE_V, id, f);
	RegisterFormatter(FLOAT_V, id, f);      // << Add float support
	RegisterFormatter(INT64_V, id, f);
	RegisterFormatter(INT_V, id, f);
	RegisterFormatter(BOOL_V, id, f);
	RegisterNullFormatter(id, f);
}
...

and/or

...
static void sRegisterFormatters()
{
	ONCELOCK {
		IntDoubleRegister(BOOL_V);
		IntDoubleRegister(INT_V);
		IntDoubleRegister(INT64_V);
		IntDoubleRegister(DOUBLE_V);
		IntDoubleRegister(FLOAT_V);      // << Add float support
...

I'm just guessing... Mirek knows for sure how to proceed.

Best regards,

Tom

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