#50 Constructors for vectors and matrix...

[Bryan Wagstaff]

Copy constructors taking pointers should take const
pointers instead of regular pointers, unless they plan
on modifying the values. As far as the compiler is
concerned, a non-const value can be treated as a
const, but not the other way around. So unless you
are planning to explicitly modify the values passed
into the copy constructors, you should always keep
them const.

For example:

matrix_t(C*m){
copy(v,m,sizeof(v));
}

should be

matrix_t(const C*m){
copy(v,m,sizeof(v));
}

bryan.