Re: [Boost-users] Cpp_int and cpp_dec_float conversion

Subject: Re: [Boost-users] Cpp_int and cpp_dec_float conversion
From: John Maddock (john_at_[hidden])
Date: 2013-04-24 06:32:43

>There is an explicit conversion from cpp_int to cpp_dec_float, but no 
>conversion in the opposite direction (in general it's unsafe).

Forgot to say: if you really must convert from cpp_dec_lfoat to cpp_int you 
could do:

cpp_int i(my_big_float.str(0, std::ios_base::fixed));

Just make sure the float really is an integer first (use 
ceil/floor/trunc/round if necessary) otherwise the conversion will fail.

HTH, John.