Is there a source code for the adjoint of a matrix in C?

I am in the last stages of writing the code for it. I wanted to know if the code has already been written or not. I have used a[i][j] = (-1)^i+j * |M[i][j]| formula.

Is there a source code for the adjoint of a matrix in C?
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Since I really haven't answered your question, it is not necessary to give me any points. Regards.
Reply:Here is some code I found...





typedef struct ModelMatrix {


float mtx[3][3]; /* rotation/scale/shear matrix */


float translate[3]; /* translation */


} ModelMatrix;





transpose_adjoint( ModelMatrix *m, ModelMatrix *adjoint)


{


/* cofactor for each element */





adjoint-%26gt;mtx[0][0] = m-%26gt;mtx[1][1] * m-%26gt;mtx[2][2] - m-%26gt;mtx[1][2] * m-%26gt;mtx[2][1] ;


adjoint-%26gt;mtx[0][1] = m-%26gt;mtx[1][2] * m-%26gt;mtx[2][0] - m-%26gt;mtx[1][0] * m-%26gt;mtx[2][2] ;


adjoint-%26gt;mtx[0][2] = m-%26gt;mtx[1][0] * m-%26gt;mtx[2][1] - m-%26gt;mtx[1][1] * m-%26gt;mtx[2][0] ;


adjoint-%26gt;mtx[1][0] = m-%26gt;mtx[2][1] * m-%26gt;mtx[0][2] - m-%26gt;mtx[2][2] * m-%26gt;mtx[0][1] ;


adjoint-%26gt;mtx[1][1] = m-%26gt;mtx[2][2] * m-%26gt;mtx[0][0] - m-%26gt;mtx[2][0] * m-%26gt;mtx[0][2] ;


adjoint-%26gt;mtx[1][2] = m-%26gt;mtx[2][0] * m-%26gt;mtx[0][1] - m-%26gt;mtx[2][1] * m-%26gt;mtx[0][0] ;


adjoint-%26gt;mtx[2][0] = m-%26gt;mtx[0][1] * m-%26gt;mtx[1][2] - m-%26gt;mtx[0][2] * m-%26gt;mtx[1][1] ;


adjoint-%26gt;mtx[2][1] = m-%26gt;mtx[0][2] * m-%26gt;mtx[1][0] - m-%26gt;mtx[0][0] * m-%26gt;mtx[1][2] ;


adjoint-%26gt;mtx[2][2] = m-%26gt;mtx[0][0] * m-%26gt;mtx[1][1] - m-%26gt;mtx[0][1] * m-%26gt;mtx[1][0] ;


}





Also you might be interested in the following book that is also available on the web...





Numerical Recipes in C





http://library.lanl.gov/numerical/bookcp...