Thank you for taking the time to try the library, Mario.
I hope it is not too late to give a short brief review of my experience with the Multiprecision library. First a general comment: this review is from a "naive user" perspective who just wants to use multiprecision and is happy finding a C++ library for that.
Users just wanting big number types are *the* target group. In fact, I consider myself to be a naive user.
My test case is to use floating point multiprecision types as the basis for our odeint library (www.odeint.com). As odeint is fully templatized I could just plug in, say, the cpp_dec_float_50 and the basic routines worked out of the box. The only problem I had was that there seems to be no support for min / max functions for expressions of multiprecision types. So can not write
x = max( a+b , a*b )
It works when the template parameter of std::max() is explicitly provided. The code below, for example, successfully compiles. boost::multiprecision::cpp_dec_float_100 a(boost::multiprecision::cpp_dec_float_100(1) / 3); boost::multiprecision::cpp_dec_float_100 b(boost::multiprecision::cpp_dec_float_100(1) / 7); boost::multiprecision::cpp_dec_float_100 c = std::max<boost::multiprecision::cpp_dec_float_100>(a + b, a * b); It does seem strange that the compiler needs an explicit template parameter for dis-ambiguity regarding the results of binary arithmetic. I don't have enough karma to know. John, what's your opinion?
when x,a,b are some mp types, however
a1 = a+b a2 = a*b x = max( a1 , a2 )
works and I used it as a workaround, however I would like to see full support of min/max in Multiprecision (maybe I just missed something?)
<snip> Best, Mario <snip> Thanks again, Mario. Best regards, Chris.