LAPACK  3.9.0
LAPACK: Linear Algebra PACKage
Functions/Subroutines
sgeqpf.f File Reference

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Functions/Subroutines

subroutine sgeqpf (M, N, A, LDA, JPVT, TAU, WORK, INFO)
 SGEQPF More...
 
snrm2
real function snrm2(N, X, INCX)
SNRM2
Definition: snrm2.f:76
sswap
subroutine sswap(N, SX, INCX, SY, INCY)
SSWAP
Definition: sswap.f:84
sgeqr2
subroutine sgeqr2(M, N, A, LDA, TAU, WORK, INFO)
SGEQR2 computes the QR factorization of a general rectangular matrix using an unblocked algorithm.
Definition: sgeqr2.f:132
isamax
integer function isamax(N, SX, INCX)
ISAMAX
Definition: isamax.f:73
slarfg
subroutine slarfg(N, ALPHA, X, INCX, TAU)
SLARFG generates an elementary reflector (Householder matrix).
Definition: slarfg.f:108
xerbla
subroutine xerbla(SRNAME, INFO)
XERBLA
Definition: xerbla.f:62
slamch
real function slamch(CMACH)
SLAMCH
Definition: slamch.f:70
sorm2r
subroutine sorm2r(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, INFO)
SORM2R multiplies a general matrix by the orthogonal matrix from a QR factorization determined by sge...
Definition: sorm2r.f:161
slarf
subroutine slarf(SIDE, M, N, V, INCV, TAU, C, LDC, WORK)
SLARF applies an elementary reflector to a general rectangular matrix.
Definition: slarf.f:126