Section 3: library functions
NAME dgerfs.f – SYNOPSIS Functions/Subroutines subroutine dgerfs (TRANS, N, NRHS, A, LDA, AF, LDAF, IPIV, B, LDB, X, LDX, FERR, BERR, WORK, IWORK, INFO) DGERFS Function/Subroutine Documentation subroutine dgerfs (characterTRANS, integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldaf, * )AF, integerLDAF, integer, dimension( * )IPIV, double precision, dimension( ldb, *…
NAME dger.f – SYNOPSIS Functions/Subroutines subroutine dger (M, N, ALPHA, X, INCX, Y, INCY, A, LDA) DGER Function/Subroutine Documentation subroutine dger (integerM, integerN, double precisionALPHA, double precision, dimension(*)X, integerINCX, double precision, dimension(*)Y, integerINCY, double precision, dimension(lda,*)A, integerLDA) DGER Purpose: DGER performs the rank 1 operation A := alpha*x*y**T + A, where alpha is a scalar,…
NAME dgeqrt3.f – SYNOPSIS Functions/Subroutines recursive subroutine dgeqrt3 (M, N, A, LDA, T, LDT, INFO) DGEQRT3 recursively computes a QR factorization of a general real or complex matrix using the compact WY representation of Q. Function/Subroutine Documentation recursive subroutine dgeqrt3 (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldt, * )T,…
NAME dgeqrt2.f – SYNOPSIS Functions/Subroutines subroutine dgeqrt2 (M, N, A, LDA, T, LDT, INFO) DGEQRT2 computes a QR factorization of a general real or complex matrix using the compact WY representation of Q. Function/Subroutine Documentation subroutine dgeqrt2 (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldt, * )T, integerLDT, integerINFO) DGEQRT2…
NAME dgeqrt.f – SYNOPSIS Functions/Subroutines subroutine dgeqrt (M, N, NB, A, LDA, T, LDT, WORK, INFO) DGEQRT Function/Subroutine Documentation subroutine dgeqrt (integerM, integerN, integerNB, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldt, * )T, integerLDT, double precision, dimension( * )WORK, integerINFO) DGEQRT Purpose: DGEQRT computes a blocked QR factorization of a real…
NAME dgeqrfp.f – SYNOPSIS Functions/Subroutines subroutine dgeqrfp (M, N, A, LDA, TAU, WORK, LWORK, INFO) DGEQRFP Function/Subroutine Documentation subroutine dgeqrfp (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerLWORK, integerINFO) DGEQRFP Purpose: DGEQRFP computes a QR factorization of a real M-by-N matrix A: A…
NAME dgeqrf.f – SYNOPSIS Functions/Subroutines subroutine dgeqrf (M, N, A, LDA, TAU, WORK, LWORK, INFO) DGEQRF Function/Subroutine Documentation subroutine dgeqrf (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerLWORK, integerINFO) DGEQRF Purpose: DGEQRF computes a QR factorization of a real M-by-N matrix A: A…
NAME dgeqr2p.f – SYNOPSIS Functions/Subroutines subroutine dgeqr2p (M, N, A, LDA, TAU, WORK, INFO) DGEQR2P computes the QR factorization of a general rectangular matrix with non-negative diagonal elements using an unblocked algorithm. Function/Subroutine Documentation subroutine dgeqr2p (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK,…
NAME dgeqr2.f – SYNOPSIS Functions/Subroutines subroutine dgeqr2 (M, N, A, LDA, TAU, WORK, INFO) DGEQR2 computes the QR factorization of a general rectangular matrix using an unblocked algorithm. Function/Subroutine Documentation subroutine dgeqr2 (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerINFO) DGEQR2 computes the…
NAME dgeqpf.f – SYNOPSIS Functions/Subroutines subroutine dgeqpf (M, N, A, LDA, JPVT, TAU, WORK, INFO) DGEQPF Function/Subroutine Documentation subroutine dgeqpf (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )JPVT, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerINFO) DGEQPF Purpose: This routine is deprecated and has been replaced by…
NAME dgeqp3.f – SYNOPSIS Functions/Subroutines subroutine dgeqp3 (M, N, A, LDA, JPVT, TAU, WORK, LWORK, INFO) DGEQP3 Function/Subroutine Documentation subroutine dgeqp3 (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )JPVT, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerLWORK, integerINFO) DGEQP3 Purpose: DGEQP3 computes a QR factorization with column…
NAME dgeqlf.f – SYNOPSIS Functions/Subroutines subroutine dgeqlf (M, N, A, LDA, TAU, WORK, LWORK, INFO) DGEQLF Function/Subroutine Documentation subroutine dgeqlf (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerLWORK, integerINFO) DGEQLF Purpose: DGEQLF computes a QL factorization of a real M-by-N matrix A: A…
NAME dgeql2.f – SYNOPSIS Functions/Subroutines subroutine dgeql2 (M, N, A, LDA, TAU, WORK, INFO) DGEQL2 computes the QL factorization of a general rectangular matrix using an unblocked algorithm. Function/Subroutine Documentation subroutine dgeql2 (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK, integerINFO) DGEQL2 computes the…
NAME dgemv.f – SYNOPSIS Functions/Subroutines subroutine dgemv (TRANS, M, N, ALPHA, A, LDA, X, INCX, BETA, Y, INCY) DGEMV Function/Subroutine Documentation subroutine dgemv (characterTRANS, integerM, integerN, double precisionALPHA, double precision, dimension(lda,*)A, integerLDA, double precision, dimension(*)X, integerINCX, double precisionBETA, double precision, dimension(*)Y, integerINCY) DGEMV Purpose: DGEMV performs one of the matrix-vector operations y := alpha*A*x +…
NAME dgemqrt.f – SYNOPSIS Functions/Subroutines subroutine dgemqrt (SIDE, TRANS, M, N, K, NB, V, LDV, T, LDT, C, LDC, WORK, INFO) DGEMQRT Function/Subroutine Documentation subroutine dgemqrt (characterSIDE, characterTRANS, integerM, integerN, integerK, integerNB, double precision, dimension( ldv, * )V, integerLDV, double precision, dimension( ldt, * )T, integerLDT, double precision, dimension( ldc, * )C, integerLDC, double precision,…
NAME dgemm.f – SYNOPSIS Functions/Subroutines subroutine dgemm (TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) DGEMM Function/Subroutine Documentation subroutine dgemm (characterTRANSA, characterTRANSB, integerM, integerN, integerK, double precisionALPHA, double precision, dimension(lda,*)A, integerLDA, double precision, dimension(ldb,*)B, integerLDB, double precisionBETA, double precision, dimension(ldc,*)C, integerLDC) DGEMM Purpose: DGEMM performs one of the matrix-matrix operations…
NAME dgelsy.f – SYNOPSIS Functions/Subroutines subroutine dgelsy (M, N, NRHS, A, LDA, B, LDB, JPVT, RCOND, RANK, WORK, LWORK, INFO) DGELSY solves overdetermined or underdetermined systems for GE matrices Function/Subroutine Documentation subroutine dgelsy (integerM, integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, * )B, integerLDB, integer, dimension( * )JPVT, double…
NAME dgelsx.f – SYNOPSIS Functions/Subroutines subroutine dgelsx (M, N, NRHS, A, LDA, B, LDB, JPVT, RCOND, RANK, WORK, INFO) DGELSX solves overdetermined or underdetermined systems for GE matrices Function/Subroutine Documentation subroutine dgelsx (integerM, integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, * )B, integerLDB, integer, dimension( * )JPVT, double precisionRCOND,…
NAME dgelss.f – SYNOPSIS Functions/Subroutines subroutine dgelss (M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK, WORK, LWORK, INFO) DGELSS solves overdetermined or underdetermined systems for GE matrices Function/Subroutine Documentation subroutine dgelss (integerM, integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, * )B, integerLDB, double precision, dimension( * )S,…
NAME dgelsd.f – SYNOPSIS Functions/Subroutines subroutine dgelsd (M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK, WORK, LWORK, IWORK, INFO) DGELSD computes the minimum-norm solution to a linear least squares problem for GE matrices Function/Subroutine Documentation subroutine dgelsd (integerM, integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, * )B,…