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List:       kde-release-team
Subject:    Re: KCalc's Future
From:       Christian Ehrlicher <Ch.Ehrlicher () gmx ! de>
Date:       2007-12-08 22:45:51
Message-ID: 475B1E9F.3090203 () gmx ! de
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Andreas Pakulat schrieb:
> On 08.12.07 23:12:16, Christian Ehrlicher wrote:
>> _knumfloat::_knumfloat(QString const & num)
>> {
>>   mpf_init(_mpf);
>>   mpf_set_str(_mpf, num.toAscii(), 10);
>> }
>>
>> I already tried to pass "10,0" without success. Don't know if "nan" and
>> "inf" is correctly interpreted.
> 
> Does gmp create a deep copy of the char*? If not that might be the
> reason, toAscii() returns a QByteArray and that will be implicitly
> converted to char*. However that returns the QByteArray internal buffer
> and thus its gone after the call to mpf_set_str. So either gmp needs to
> do a deep copy in set_str or you need to keep the QByteArray around
> until its not needed anymore.
> 
I hope you're wrong - I would consider this as a design bug in gmp
otherwise :)


Christian
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