Re: [Boost-users] pow math function and bind in boost::lambda

Subject: Re: [Boost-users] pow math function and bind in boost::lambda
From: Roman Perepelitsa (roman.perepelitsa_at_[hidden])
Date: 2009-11-30 06:00:05

could not deduce template argument for 'overloaded function type' from
'overloaded function type'

That's because function pow is overloaded. You should either explicitly cast
it (replace pow with static_cast<double (*)(double>(pow)) or create a
polymorphic function object that calls pow.

Roman Perepelitsa.

2009/11/30 Conoscenza Silente <abruzzoforteegentile_at_[hidden]>

> The problem is that It does't compile.
> I used MSVC++ Express.
> The error in the attached file is generated only by that code.
>
>
> On Mon, Nov 30, 2009 at 11:30 AM, Roman Perepelitsa <
> roman.perepelitsa_at_[hidden]> wrote:
>
>> 2009/11/30 Conoscenza Silente <abruzzoforteegentile_at_[hidden]>
>>
>> Hi All
>>> I tried to use pow function from <cmath> in a lamda function using
>>> boost::lamdba.
>>> Below the piece of code I used.
>>> Do you know what is wrong with it?
>>> Thank you very much.
>>> CS
>>>
>>> double l_tmp;
>>> double p_tmp;
>>>
>>> constant_type<double>::type h( constant(2.3) );
>>> constant_type<double>::type g( constant(1.2) );
>>>
>>> var_type<double>::type tmp( var(l_tmp) );
>>> var_type<double>::type pow_tmp( var(p_tmp) );
>>>
>>> std::for_each( x.begin(), x.end(),(
>>> tmp = 10,
>>>  pow_tmp = boost::lambda::bind( pow, tmp - h - g , 3.15 )
>>> ));
>>>
>>
>> Does it compile? If not, can you post an error message? If it compiles, do
>> you encounter any problems in run time?
>>
>> Roman Perepelitsa.
>>
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>
>
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