dorgl2.f man page
subroutine dorgl2 (M, N, K, A, LDA, TAU, WORK, INFO)
subroutine dorgl2 (integerM, integerN, integerK, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerINFO)
DORGL2 generates an m by n real matrix Q with orthonormal rows, which is defined as the first m rows of a product of k elementary reflectors of order n Q = H(k) . . . H(2) H(1) as returned by DGELQF.
M is INTEGER The number of rows of the matrix Q. M >= 0.
N is INTEGER The number of columns of the matrix Q. N >= M.
K is INTEGER The number of elementary reflectors whose product defines the matrix Q. M >= K >= 0.
A is DOUBLE PRECISION array, dimension (LDA,N) On entry, the i-th row must contain the vector which defines the elementary reflector H(i), for i = 1,2,...,k, as returned by DGELQF in the first k rows of its array argument A. On exit, the m-by-n matrix Q.
LDA is INTEGER The first dimension of the array A. LDA >= max(1,M).
TAU is DOUBLE PRECISION array, dimension (K) TAU(i) must contain the scalar factor of the elementary reflector H(i), as returned by DGELQF.
WORK is DOUBLE PRECISION array, dimension (M)
INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument has an illegal value
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Definition at line 114 of file dorgl2.f.
Generated automatically by Doxygen for LAPACK from the source code.
dorgl2(3) is an alias of dorgl2.f(3).