initial commit

oscar64/autotest/mmultest.c

@@ -0,0 +1,43 @@
+#include <gfx/vector3d.h>
+#include <assert.h>
+#include <stdio.h>
+
+Matrix4	ml, mr;
+
+int main(void)
+{
+	for(char i=0; i<16; i++)
+	{
+		for(char j=0; j<16; j++)
+		{
+			for(char k=0; k<16; k++)
+			{
+				ml.m[k] = (i == k) ? 1.0 : 0.0;
+				mr.m[k] = (j == k) ? 1.0 : 0.0;
+			}
+
+			mat4_mmul(&ml, &mr);
+
+#if 0
+			printf("%d, %d\n", i, j);
+			for(char k=0; k<16; k++)
+				printf("%f ", ml.m[k]);
+			printf("\n");
+#endif
+
+			for(char k=0; k<16; k++)
+			{
+				char ix = i & 3, iy = i >> 2;
+				char jx = j & 3, jy = j >> 2;
+				char kx = k & 3, ky = k >> 2;
+
+				if (ky == jy && kx == ix && jx == iy)
+					assert(ml.m[k] == 1.0);
+				else
+					assert(ml.m[k] == 0.0);
+			}
+		}
+	}
+		
+	return 0;
+}