lapack_qr_f64

void lapack_qr_f64(const double * A, int m, int n, double * Q, double * R, int * info)

Double-precision reduced QR decomposition. Uses dgeqrf_ + dorgqr_.

References

LAPACK dgeqrf_ + dorgqr_.

Aconst double*

Row-major

m \times n

input.

m, nint

Dimensions.

Qdouble*

Output

m \times k

matrix with orthonormal columns.

Rdouble*

Output

k \times n

upper-triangular matrix.

infoint*

LAPACK status word.

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void lapack_qr_f64(const double * A, int m, int n, double * Q, double * R, int * info)

Double-precision reduced QR decomposition. Uses dgeqrf_ + dorgqr_.

References

LAPACK dgeqrf_ + dorgqr_.

Aconst double*

Row-major

m \times n

input.

m, nint

Dimensions.

Qdouble*

Output

m \times k

matrix with orthonormal columns.

Rdouble*

Output

k \times n

upper-triangular matrix.

infoint*

LAPACK status word.