maxval() reduction for values < 0 not working.

[fhirschberger]

Finding the maximum value of an array with maxval(), e.g.,

adept::Vector v{-2, -1};

std::cout << "v         : " << v                << "\n";
std::cout << "maxval(v) : " << adept::maxval(v) << "\n";

returns

v         : {-2, -1}
maxval(v) : 2.22507e-308

instead of -1. In reduce.h in line 217

T first_value() { return std::numeric_limits<T>::min(); }

returns a value > 0 for double, whereas lowest() returns -1.79769e+308. Also consider the output for inf

v         : {inf, inf}
minval(v) : 1.79769e+308

[rjhogan]

Thanks for reporting this bug - the latest commit should fix it.