Section 3: library functions
dlapll.f – SynopsisFunctions/Subroutinessubroutine dlapll (N, X, INCX, Y, INCY, SSMIN) DLAPLL measures the linear dependence of two vectors. Function/Subroutine Documentationsubroutine dlapll (integerN, double precision, dimension( * )X, integerINCX, double precision, dimension( * )Y, integerINCY, double precisionSSMIN)DLAPLL measures the linear dependence of two vectors. Purpose: Given two column vectors X and Y, let A = (…
dlanv2.f – SynopsisFunctions/Subroutinessubroutine dlanv2 (A, B, C, D, RT1R, RT1I, RT2R, RT2I, CS, SN) DLANV2 computes the Schur factorization of a real 2-by-2 nonsymmetric matrix in standard form. Function/Subroutine Documentationsubroutine dlanv2 (double precisionA, double precisionB, double precisionC, double precisionD, double precisionRT1R, double precisionRT1I, double precisionRT2R, double precisionRT2I, double precisionCS, double precisionSN)DLANV2 computes the Schur factorization…
dlantr.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlantr (NORM, UPLO, DIAG, M, N, A, LDA, WORK) DLANTR returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a trapezoidal or triangular matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlantr (characterNORM, characterUPLO, characterDIAG, integerM, integerN, double precision, dimension(…
dlantp.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlantp (NORM, UPLO, DIAG, N, AP, WORK) DLANTP returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a triangular matrix supplied in packed form. Function/Subroutine DocumentationDOUBLE PRECISION function dlantp (characterNORM, characterUPLO, characterDIAG, integerN, double precision, dimension( *…
dlantb.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlantb (NORM, UPLO, DIAG, N, K, AB, LDAB, WORK) DLANTB returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a triangular band matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlantb (characterNORM, characterUPLO, characterDIAG, integerN, integerK, double precision, dimension( ldab,…
dlansy.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlansy (NORM, UPLO, N, A, LDA, WORK) DLANSY returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a real symmetric matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlansy (characterNORM, characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, double…
dlanst.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlanst (NORM, N, D, E) DLANST returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a real symmetric tridiagonal matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlanst (characterNORM, integerN, double precision, dimension( * )D, double precision, dimension( * )E)DLANST…
dlansp.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlansp (NORM, UPLO, N, AP, WORK) DLANSP returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a symmetric matrix supplied in packed form. Function/Subroutine DocumentationDOUBLE PRECISION function dlansp (characterNORM, characterUPLO, integerN, double precision, dimension( * )AP, double…
dlansf.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlansf (NORM, TRANSR, UPLO, N, A, WORK) DLANSF returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a symmetric matrix in RFP format. Function/Subroutine DocumentationDOUBLE PRECISION function dlansf (characterNORM, characterTRANSR, characterUPLO, integerN, double precision, dimension( 0: *…
dlansb.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlansb (NORM, UPLO, N, K, AB, LDAB, WORK) DLANSB returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a symmetric band matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlansb (characterNORM, characterUPLO, integerN, integerK, double precision, dimension( ldab, * )AB,…
dlanhs.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlanhs (NORM, N, A, LDA, WORK) DLANHS returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value of any element of an upper Hessenberg matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlanhs (characterNORM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )WORK)DLANHS returns the…
dlangt.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlangt (NORM, N, DL, D, DU) DLANGT returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value of any element of a general tridiagonal matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlangt (characterNORM, integerN, double precision, dimension( * )DL, double precision, dimension( * )D, double precision, dimension( *…
dlange.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlange (NORM, M, N, A, LDA, WORK) DLANGE returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value of any element of a general rectangular matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlange (characterNORM, integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )WORK)DLANGE…
dlangb.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlangb (NORM, N, KL, KU, AB, LDAB, WORK) DLANGB returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value of any element of general band matrix. Function/Subroutine DocumentationDOUBLE PRECISION function dlangb (characterNORM, integerN, integerKL, integerKU, double precision, dimension( ldab, * )AB, integerLDAB, double precision, dimension( *…
dlaneg.f – SynopsisFunctions/SubroutinesINTEGER function dlaneg (N, D, LLD, SIGMA, PIVMIN, R) DLANEG computes the Sturm count. Function/Subroutine DocumentationINTEGER function dlaneg (integerN, double precision, dimension( * )D, double precision, dimension( * )LLD, double precisionSIGMA, double precisionPIVMIN, integerR)DLANEG computes the Sturm count. Purpose: DLANEG computes the Sturm count, the number of negative pivots encountered while factoring tridiagonal…
dlamrg.f – SynopsisFunctions/Subroutinessubroutine dlamrg (N1, N2, A, DTRD1, DTRD2, INDEX) DLAMRG creates a permutation list to merge the entries of two independently sorted sets into a single set sorted in ascending order. Function/Subroutine Documentationsubroutine dlamrg (integerN1, integerN2, double precision, dimension( * )A, integerDTRD1, integerDTRD2, integer, dimension( * )INDEX)DLAMRG creates a permutation list to merge the…
dlamch.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlamch (CMACH) DLAMCH DOUBLE PRECISION function dlamc3 (A, B) DLAMC3 Function/Subroutine DocumentationDOUBLE PRECISION function dlamc3 (double precisionA, double precisionB)DLAMC3 Purpose: DLAMC3 is intended to force A and B to be stored prior to doing the addition of A and B , for use in situations where optimizers might hold one…
dlamchf77.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlamch (CMACH) DLAMCHF77 deprecated subroutine dlamc1 (BETA, T, RND, IEEE1) DLAMC1 subroutine dlamc2 (BETA, T, RND, EPS, EMIN, RMIN, EMAX, RMAX) DLAMC2 DOUBLE PRECISION function dlamc3 (A, B) DLAMC3 subroutine dlamc4 (EMIN, START, BASE) DLAMC4 subroutine dlamc5 (BETA, P, EMIN, IEEE, EMAX, RMAX) DLAMC5 Function/Subroutine Documentationsubroutine dlamc1 (integerBETA, integerT, logicalRND,…
dlamchf77.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlamch (CMACH) DLAMCHF77 deprecated subroutine dlamc1 (BETA, T, RND, IEEE1) DLAMC1 subroutine dlamc2 (BETA, T, RND, EPS, EMIN, RMIN, EMAX, RMAX) DLAMC2 DOUBLE PRECISION function dlamc3 (A, B) DLAMC3 subroutine dlamc4 (EMIN, START, BASE) DLAMC4 subroutine dlamc5 (BETA, P, EMIN, IEEE, EMAX, RMAX) DLAMC5 Function/Subroutine Documentationsubroutine dlamc1 (integerBETA, integerT, logicalRND,…
dlamch.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlamch (CMACH) DLAMCH DOUBLE PRECISION function dlamc3 (A, B) DLAMC3 Function/Subroutine DocumentationDOUBLE PRECISION function dlamc3 (double precisionA, double precisionB)DLAMC3 Purpose: DLAMC3 is intended to force A and B to be stored prior to doing the addition of A and B , for use in situations where optimizers might hold one…