add

README.md

@@ -288,4 +288,21 @@ You can use vectors!
 - added the `norm` function to compute the norm
 - dot product between two vectors ( * operator)
 
+Functions added: 
+- norm
+
 ![](docs/assets/vector.png)
+
+## Matrices !
+
+As of 2.7.0 matrix algebra is implemented (using lup reduction)
+
+- you can add matrices 
+- multiply compatible matrices
+
+functions added
+- transpose
+- invert
+- det 
+
+![](docs/assets/matrix.png)

src/interpreting/stdlib.rs

@@ -951,7 +951,7 @@ pub fn det_matrix(
             None => Parameters::Identifier("This variable is not initialized yet".to_string()),
             Some(ref t) => match t.get(s.as_str()) {
                 None => Parameters::Null,
-                Some(t) => transpose_matrices(&vec![t.clone()], ram),
+                Some(t) => det_matrix(&vec![t.clone()], ram),
             },
         },
         _ => Parameters::Null,
@@ -1017,7 +1017,7 @@ pub fn inverse_matrix(
             None => Parameters::Identifier("This variable is not initialized yet".to_string()),
             Some(ref t) => match t.get(s.as_str()) {
                 None => Parameters::Null,
-                Some(t) => transpose_matrices(&vec![t.clone()], ram),
+                Some(t) => inverse_matrix(&vec![t.clone()], ram),
             },
         },
         _ => Parameters::Null,