Macro nalgebra::unimplemented_or_uninitialized_generic

macro_rules! unimplemented_or_uninitialized_generic {
    ($nrows:expr, $ncols:expr) => { ... };
}

When “no_unsound_assume_init” is enabled, expands to unimplemented!() instead of new_uninitialized_generic().assume_init(). Intended as a placeholder, each callsite should be refactored to use uninitialized memory soundly