Section 3: library functions
NAME dtgsna.f – SYNOPSIS Functions/Subroutines subroutine dtgsna (JOB, HOWMNY, SELECT, N, A, LDA, B, LDB, VL, LDVL, VR, LDVR, S, DIF, MM, M, WORK, LWORK, IWORK, INFO) DTGSNA Function/Subroutine Documentation subroutine dtgsna (characterJOB, characterHOWMNY, logical, dimension( * )SELECT, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, * )B, integerLDB, double precision,…
NAME dtgsja.f – SYNOPSIS Functions/Subroutines subroutine dtgsja (JOBU, JOBV, JOBQ, M, P, N, K, L, A, LDA, B, LDB, TOLA, TOLB, ALPHA, BETA, U, LDU, V, LDV, Q, LDQ, WORK, NCYCLE, INFO) DTGSJA Function/Subroutine Documentation subroutine dtgsja (characterJOBU, characterJOBV, characterJOBQ, integerM, integerP, integerN, integerK, integerL, double precision, dimension( lda, * )A, integerLDA, double precision, dimension(…
NAME dtgsen.f – SYNOPSIS Functions/Subroutines subroutine dtgsen (IJOB, WANTQ, WANTZ, SELECT, N, A, LDA, B, LDB, ALPHAR, ALPHAI, BETA, Q, LDQ, Z, LDZ, M, PL, PR, DIF, WORK, LWORK, IWORK, LIWORK, INFO) DTGSEN Function/Subroutine Documentation subroutine dtgsen (integerIJOB, logicalWANTQ, logicalWANTZ, logical, dimension( * )SELECT, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension(…
NAME dtgexc.f – SYNOPSIS Functions/Subroutines subroutine dtgexc (WANTQ, WANTZ, N, A, LDA, B, LDB, Q, LDQ, Z, LDZ, IFST, ILST, WORK, LWORK, INFO) DTGEXC Function/Subroutine Documentation subroutine dtgexc (logicalWANTQ, logicalWANTZ, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, * )B, integerLDB, double precision, dimension( ldq, * )Q, integerLDQ, double precision, dimension(…
NAME dtgex2.f – SYNOPSIS Functions/Subroutines subroutine dtgex2 (WANTQ, WANTZ, N, A, LDA, B, LDB, Q, LDQ, Z, LDZ, J1, N1, N2, WORK, LWORK, INFO) DTGEX2 swaps adjacent diagonal blocks in an upper (quasi) triangular matrix pair by an orthogonal equivalence transformation. Function/Subroutine Documentation subroutine dtgex2 (logicalWANTQ, logicalWANTZ, integerN, double precision, dimension( lda, * )A, integerLDA,…
NAME dtgevc.f – SYNOPSIS Functions/Subroutines subroutine dtgevc (SIDE, HOWMNY, SELECT, N, S, LDS, P, LDP, VL, LDVL, VR, LDVR, MM, M, WORK, INFO) DTGEVC Function/Subroutine Documentation subroutine dtgevc (characterSIDE, characterHOWMNY, logical, dimension( * )SELECT, integerN, double precision, dimension( lds, * )S, integerLDS, double precision, dimension( ldp, * )P, integerLDP, double precision, dimension( ldvl, * )VL,…
NAME dtfttr.f – SYNOPSIS Functions/Subroutines subroutine dtfttr (TRANSR, UPLO, N, ARF, A, LDA, INFO) DTFTTR copies a triangular matrix from the rectangular full packed format (TF) to the standard full format (TR). Function/Subroutine Documentation subroutine dtfttr (characterTRANSR, characterUPLO, integerN, double precision, dimension( 0: * )ARF, double precision, dimension( 0: lda-1, 0: * )A, integerLDA, integerINFO)…
NAME dtfttp.f – SYNOPSIS Functions/Subroutines subroutine dtfttp (TRANSR, UPLO, N, ARF, AP, INFO) DTFTTP copies a triangular matrix from the rectangular full packed format (TF) to the standard packed format (TP). Function/Subroutine Documentation subroutine dtfttp (characterTRANSR, characterUPLO, integerN, double precision, dimension( 0: * )ARF, double precision, dimension( 0: * )AP, integerINFO) DTFTTP copies a triangular…
NAME dtftri.f – SYNOPSIS Functions/Subroutines subroutine dtftri (TRANSR, UPLO, DIAG, N, A, INFO) DTFTRI Function/Subroutine Documentation subroutine dtftri (characterTRANSR, characterUPLO, characterDIAG, integerN, double precision, dimension( 0: * )A, integerINFO) DTFTRI Purpose: DTFTRI computes the inverse of a triangular matrix A stored in RFP format. This is a Level 3 BLAS version of the algorithm. …
NAME dtfsm.f – SYNOPSIS Functions/Subroutines subroutine dtfsm (TRANSR, SIDE, UPLO, TRANS, DIAG, M, N, ALPHA, A, B, LDB) DTFSM solves a matrix equation (one operand is a triangular matrix in RFP format). Function/Subroutine Documentation subroutine dtfsm (characterTRANSR, characterSIDE, characterUPLO, characterTRANS, characterDIAG, integerM, integerN, double precisionALPHA, double precision, dimension( 0: * )A, double precision, dimension( 0:…
NAME dtbtrs.f – SYNOPSIS Functions/Subroutines subroutine dtbtrs (UPLO, TRANS, DIAG, N, KD, NRHS, AB, LDAB, B, LDB, INFO) DTBTRS Function/Subroutine Documentation subroutine dtbtrs (characterUPLO, characterTRANS, characterDIAG, integerN, integerKD, integerNRHS, double precision, dimension( ldab, * )AB, integerLDAB, double precision, dimension( ldb, * )B, integerLDB, integerINFO) DTBTRS Purpose: DTBTRS solves a triangular system of the form A…
NAME dtbsv.f – SYNOPSIS Functions/Subroutines subroutine dtbsv (UPLO, TRANS, DIAG, N, K, A, LDA, X, INCX) DTBSV Function/Subroutine Documentation subroutine dtbsv (characterUPLO, characterTRANS, characterDIAG, integerN, integerK, double precision, dimension(lda,*)A, integerLDA, double precision, dimension(*)X, integerINCX) DTBSV Purpose: DTBSV solves one of the systems of equations A*x = b, or A**T*x = b, where b and x…
NAME dtbrfs.f – SYNOPSIS Functions/Subroutines subroutine dtbrfs (UPLO, TRANS, DIAG, N, KD, NRHS, AB, LDAB, B, LDB, X, LDX, FERR, BERR, WORK, IWORK, INFO) DTBRFS Function/Subroutine Documentation subroutine dtbrfs (characterUPLO, characterTRANS, characterDIAG, integerN, integerKD, integerNRHS, double precision, dimension( ldab, * )AB, integerLDAB, double precision, dimension( ldb, * )B, integerLDB, double precision, dimension( ldx, * )X,…
NAME dtbmv.f – SYNOPSIS Functions/Subroutines subroutine dtbmv (UPLO, TRANS, DIAG, N, K, A, LDA, X, INCX) DTBMV Function/Subroutine Documentation subroutine dtbmv (characterUPLO, characterTRANS, characterDIAG, integerN, integerK, double precision, dimension(lda,*)A, integerLDA, double precision, dimension(*)X, integerINCX) DTBMV Purpose: DTBMV performs one of the matrix-vector operations x := A*x, or x := A**T*x, where x is an n…
NAME dtbcon.f – SYNOPSIS Functions/Subroutines subroutine dtbcon (NORM, UPLO, DIAG, N, KD, AB, LDAB, RCOND, WORK, IWORK, INFO) DTBCON Function/Subroutine Documentation subroutine dtbcon (characterNORM, characterUPLO, characterDIAG, integerN, integerKD, double precision, dimension( ldab, * )AB, integerLDAB, double precisionRCOND, double precision, dimension( * )WORK, integer, dimension( * )IWORK, integerINFO) DTBCON Purpose: DTBCON estimates the reciprocal of the…
NAME dsytrs2.f – SYNOPSIS Functions/Subroutines subroutine dsytrs2 (UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) DSYTRS2 Function/Subroutine Documentation subroutine dsytrs2 (characterUPLO, integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( ldb, * )B, integerLDB, double precision, dimension( * )WORK, integerINFO) DSYTRS2 Purpose: DSYTRS2 solves a system…
NAME dsytrs.f – SYNOPSIS Functions/Subroutines subroutine dsytrs (UPLO, N, NRHS, A, LDA, IPIV, B, LDB, INFO) DSYTRS Function/Subroutine Documentation subroutine dsytrs (characterUPLO, integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( ldb, * )B, integerLDB, integerINFO) DSYTRS Purpose: DSYTRS solves a system of linear equations A*X = B…
NAME dsytri2x.f – SYNOPSIS Functions/Subroutines subroutine dsytri2x (UPLO, N, A, LDA, IPIV, WORK, NB, INFO) DSYTRI2X Function/Subroutine Documentation subroutine dsytri2x (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( n+nb+1,* )WORK, integerNB, integerINFO) DSYTRI2X Purpose: DSYTRI2X computes the inverse of a real symmetric indefinite matrix A using the…
NAME dsytri2.f – SYNOPSIS Functions/Subroutines subroutine dsytri2 (UPLO, N, A, LDA, IPIV, WORK, LWORK, INFO) DSYTRI2 Function/Subroutine Documentation subroutine dsytri2 (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( * )WORK, integerLWORK, integerINFO) DSYTRI2 Purpose: DSYTRI2 computes the inverse of a DOUBLE PRECISION symmetric indefinite matrix A using…
NAME dsytri.f – SYNOPSIS Functions/Subroutines subroutine dsytri (UPLO, N, A, LDA, IPIV, WORK, INFO) DSYTRI Function/Subroutine Documentation subroutine dsytri (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( * )WORK, integerINFO) DSYTRI Purpose: DSYTRI computes the inverse of a real symmetric indefinite matrix A using the factorization A…