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Prototype
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template <class LapackMatA, class VectorT>
int gelqf(LapackMatA& a, VectorT& tau) ;
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Description
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Compute an LQ factorization of a M-by-N matrix A.
- a (IN/OUT - matrix(M,N)) On entry, the M-by-N matrix A. On exit, the elements on and below the diagonal of the array contain the m-by-min(m,n) lower trapezoidal matrix L (L is lower triangular if m <= n); the elements above the diagonal, with the array TAU, represent the unitary matrix Q as a product of elementary reflectors.
- tau (OUT - vector(min(M,N)) The scalar factors of the elementary reflectors.
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Definition
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mtl2lapack.h | ||||||

Preconditions
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Complexity
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Example
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Notes
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See also
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