guMtxF2L
# guMtxF2L [Function]

### Function

guMtxF2L

*Converts a matrix from floating point to fixed point*

### Syntax

```
#include <ultra64.h> /* gu.h */
void guMtxF2L(float mf[4][4], Mtx *m);
```

### Arguments

**mf**
- Floating-point matrix
**m**
- Pointer to resulting fixed-point matrix

### Returned value

None.

### Description

Converts the floating-point matrix **mf** to the fixed-point matrix **m**. This function provides a useful way to process matrices on the host CPU. For a detailed explanation about the fixed-point format see gSPMatrix. The opposite conversion from fixed point to floating point is handled with the guMtxL2F function.

### Note

The Mtx structure looks like this:

```
typedef long Mtx_t[4][4];
typedef union {
Mtx_t m;
long long int force_structure_alignment;
} Mtx;
```

### See also

gSPMatrix, guMtxL2F

### Revision history

03/01/99 Completely rewritten.