哪位知道uf5940/41是什么函数？

找了好久，也没有找到这俩个函数，谢谢哪位朋友了。

在帮助文件里所搜一下不久ok了
  
Returns a matrix to map coordinates from one coordinate system to another.
  NOTE: rp1 and rp2 are invalid when they contain a zero direction vector, or  
  the X and Y vectors are parallel.         
  Return:  
        void.
  Environment: Internal & External
  See Also:
  History:
*******************************************************************************/
extern UFUNEXPORT void FTN(uf5940)(
double *rp1,    /* <I>
                Real Data For Reference Coordinate System
                rp1[0-2] is the origin in absolute coordinates.   
                rp1[3-8] are the X and Y vectors in absolute coordinates.
                */
double *rp2,   /* <I>
               Real Data For Destination Coordinate System
                rp2[0-2] is the origin in absolute coordinates.   
                rp2[3-8] are the X and Y vectors in absolute coordinates.
               */
double *rr3,   /* <O>
                  Resulting Matrix.  This must be declared to hold 16 doubles.
               */
int *ir4      /* <O>
                  Status Code
                     0 = Success  
                     1 = rp1 Is Invalid
                     2 = rp2 Is Invalid
              */   
);
/*******************************************************************************
Returns the transformation of a position. No new objects are created here.
  
When rp2 is the "Change Coordinate" matrix (from UF5940), ra1 should be a  
position with respect to the reference coordinate system in the input in order  
to get back ra1 as a position with respect to the destination coordinate system
in the output. When rp2 is any other type of transformation matrix, ra1 should  
be a position in the absolute coordinates. The output in ra1 is then a
transformed position in absolute coordinates as well.
  
Return: void.
Environment: Internal & External
See Also:
History:
*******************************************************************************/
extern UFUNEXPORT void FTN(uf5941)(
double *ra1,              /* <I/O>
                            &nbsposition/ Transformed Position
                          */
double *rp2               /* <I>
                          Defined Transformation Matrix.  This must be declared
                          to hold 16 doubles.
                          */
);

太感谢qingwufy了^_^。不好意思，我还真不知道怎么在帮助文件里搜索函数呢。