Used forward declaration in vector.h

Also added tag 'Matrix' to struct 'Matrix'. Makes forwards declaration
available for 'Matrix'.
Avoids having to import matrix.h in vector.h (and the other way around),
when accessing matrix functionality.

3 files changed, 5 insertions, 4 deletions

diff --git a/matrix.h b/matrix.h
index 85dfa2b..76a3688 100644
--- a/matrix.h
+++ b/matrix.h
@@ -33,7 +33,7 @@ typedef enum {
     MATRIX_SWAP_COLS
 } MatrixSwapType;
 
-typedef struct {
+typedef struct Matrix {
     double *xs;
     size_t m;
     size_t n;
diff --git a/vector.c b/vector.c
index 0ea8152..48b1901 100644
--- a/vector.c
+++ b/vector.c
@@ -1,5 +1,6 @@
 #include "vector.h"
 
+#include "matrix.h"
 #include "utils.h"
 
 #include <math.h>
diff --git a/vector.h b/vector.h
index c10a765..3df897e 100644
--- a/vector.h
+++ b/vector.h
@@ -3,8 +3,6 @@
 
 #include <stddef.h>
 
-#include "matrix.h"
-
 #define vector_at(v, i) ((v)->xs[(i)])
 
 #define vector_loop(v, i) matrix_loop((v)->mat, i)
@@ -15,7 +13,9 @@
 
 #define VECTOR_DIM_MATCH(v1, v2) ((v1)->m == (v2)->m)
 
-typedef struct {
+typedef struct Matrix Matrix;
+
+typedef struct Vector {
     double *xs;
     size_t m;
     Matrix *mat;