Section 3: library functions
dlaqge.f – SynopsisFunctions/Subroutinessubroutine dlaqge (M, N, A, LDA, R, C, ROWCND, COLCND, AMAX, EQUED) DLAQGE scales a general rectangular matrix, using row and column scaling factors computed by sgeequ. Function/Subroutine Documentationsubroutine dlaqge (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )R, double precision, dimension( * )C, double precisionROWCND, double precisionCOLCND,…
dlaqgb.f – SynopsisFunctions/Subroutinessubroutine dlaqgb (M, N, KL, KU, AB, LDAB, R, C, ROWCND, COLCND, AMAX, EQUED) DLAQGB scales a general band matrix, using row and column scaling factors computed by sgbequ. Function/Subroutine Documentationsubroutine dlaqgb (integerM, integerN, integerKL, integerKU, double precision, dimension( ldab, * )AB, integerLDAB, double precision, dimension( * )R, double precision, dimension( * )C,…
dlapy3.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlapy3 (X, Y, Z) DLAPY3 returns sqrt(x2+y2+z2). Function/Subroutine DocumentationDOUBLE PRECISION function dlapy3 (double precisionX, double precisionY, double precisionZ)DLAPY3 returns sqrt(x2+y2+z2). Purpose: DLAPY3 returns sqrt(x**2+y**2+z**2), taking care not to cause unnecessary overflow. Parameters: X X is DOUBLE PRECISIONY Y is DOUBLE PRECISIONZ Z is DOUBLE PRECISION X, Y and Z specify…
dlapy2.f – SynopsisFunctions/SubroutinesDOUBLE PRECISION function dlapy2 (X, Y) DLAPY2 returns sqrt(x2+y2). Function/Subroutine DocumentationDOUBLE PRECISION function dlapy2 (double precisionX, double precisionY)DLAPY2 returns sqrt(x2+y2). Purpose: DLAPY2 returns sqrt(x**2+y**2), taking care not to cause unnecessary overflow. Parameters: X X is DOUBLE PRECISIONY Y is DOUBLE PRECISION X and Y specify the values x and y. Author: Univ. of…
dlapmt.f – SynopsisFunctions/Subroutinessubroutine dlapmt (FORWRD, M, N, X, LDX, K) DLAPMT performs a forward or backward permutation of the columns of a matrix. Function/Subroutine Documentationsubroutine dlapmt (logicalFORWRD, integerM, integerN, double precision, dimension( ldx, * )X, integerLDX, integer, dimension( * )K)DLAPMT performs a forward or backward permutation of the columns of a matrix. Purpose: DLAPMT rearranges…
dlapmr.f – SynopsisFunctions/Subroutinessubroutine dlapmr (FORWRD, M, N, X, LDX, K) DLAPMR rearranges rows of a matrix as specified by a permutation vector. Function/Subroutine Documentationsubroutine dlapmr (logicalFORWRD, integerM, integerN, double precision, dimension( ldx, * )X, integerLDX, integer, dimension( * )K)DLAPMR rearranges rows of a matrix as specified by a permutation vector. Purpose: DLAPMR rearranges the rows…
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( *…