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src/matrix/2x2matrix.h

+#ifndef _2X2MATRIX_H
+#define _2X2MATRIX_H
+#define MATRIXCACHE2X2 10
+#include <stdint.h>
+typedef struct{
+    float a11,a12,
+        a21,a22;
+}_2x2Matrix;
+
+typedef struct{
+    float a11,
+        a21;
+}_2x1Matrix;
+
+_2x2Matrix add_2x2(_2x2Matrix m1, _2x2Matrix m2);
+_2x2Matrix minus_2x2(_2x2Matrix m1, _2x2Matrix m2);
+_2x2Matrix multiply_2x2(_2x2Matrix m1, _2x2Matrix m2);
+_2x2Matrix scale_2x2(_2x2Matrix m1, float scale);
+float det_2x2(_2x2Matrix m);
+_2x2Matrix inverse_2x2(_2x2Matrix m);
+_2x1Matrix transpose_2x2(_2x2Matrix m1, _2x1Matrix m2);
+unsigned char equals_2x2(_2x2Matrix m1, _2x2Matrix m2);
+
+#endif //_2X2MATRIX_H