## 12.17 Miscellaneous Commands

Here are a few more functions for manipulating matrices.

`void EZ_CopyMatrix(EZ_Matrix des, EZ_Matrix src);`

`void EZ_CopyTransposeMatrix(EZ_Matrix des, EZ_Matrix src);`

`void EZ_IdentityMatrix(EZ_Matrix mtx);`

`void EZ_ZeroMatrix(EZ_Matrix mtx);`

`void EZ_InvertMatrix4_(EZ_Matrix ans, EZ_Matrix src, int transp);`

`void EZ_World2Screen(float *xyz, int *x, int *y, float *fz);`

`void EZ_Screen2World(int x, int y, float *fx, float *fy);`

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