WIP: rewrite transpose

Author: termoshtt

lax/src/least_squares.rs

@@ -68,8 +68,9 @@ macro_rules! impl_least_squares {
                 let mut a_t = None;
                 let a_layout = match a_layout {
                     MatrixLayout::C { .. } => {
-                        a_t = Some(unsafe { vec_uninit( a.len()) });
-                        transpose(a_layout, a, a_t.as_mut().unwrap())
+                        let (layout, t) = transpose(a_layout, a);
+                        a_t = Some(t);
+                        layout
                     }
                     MatrixLayout::F { .. } => a_layout,
                 };
@@ -78,8 +79,9 @@ macro_rules! impl_least_squares {
                 let mut b_t = None;
                 let b_layout = match b_layout {
                     MatrixLayout::C { .. } => {
-                        b_t = Some(unsafe { vec_uninit( b.len()) });
-                        transpose(b_layout, b, b_t.as_mut().unwrap())
+                        let (layout, t) = transpose(b_layout, b);
+                        b_t = Some(t);
+                        layout
                     }
                     MatrixLayout::F { .. } => b_layout,
                 };