Orthogonal-triangular decomposition

C Prototype

mxArray *mlfQr(mxArray **R, mxArray **E,
               mxArray *in1, mxArray *in2, mxArray *in3);

C Syntax

#include "matlab.h"

mxArray *X;                     /* Required input argument(s) */
mxArray *R = NULL, *E = NULL;   /* Optional output argument(s) */
mxArray *Q = NULL, *A = NULL;   /* Return value */

mlfAssign(&Q, mlfQr(&R,NULL,X,NULL,NULL));
mlfAssign(&Q, mlfQr(&R,&E,X,NULL,NULL));
mlfAssign(&Q, mlfQr(&R,NULL,X,mlfScalar(0),NULL));
mlfAssign(&Q, mlfQr(&R,&E,X,mlfScalar(0),NULL));
mlfAssign(&A, mlfQr(NULL,NULL,X,NULL,NULL));

MATLAB Syntax

[Q,R] = qr(X)
[Q,R,E] = qr(X)
[Q,R] = qr(X,0)
[Q,R,E] = qr(X,0)
A = qr(X)

See Also

MATLAB qr     Calling Conventions