The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
NAME dlaneg.f – SYNOPSIS Functions/Subroutines INTEGER function dlaneg (N, D, LLD, SIGMA, PIVMIN, R) DLANEG computes the Sturm count. Function/Subroutine Documentation INTEGER 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…
NAME dlamrg.f – SYNOPSIS Functions/Subroutines subroutine 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 Documentation subroutine dlamrg (integerN1, integerN2, double precision, dimension( * )A, integerDTRD1, integerDTRD2, integer, dimension( * )INDEX) DLAMRG creates a…
NAME dlamch.f – SYNOPSIS Functions/Subroutines DOUBLE PRECISION function dlamch (CMACH) DLAMCH DOUBLE PRECISION function dlamc3 (A, B) DLAMC3 Function/Subroutine Documentation DOUBLE 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…
NAME dlamchf77.f – SYNOPSIS Functions/Subroutines DOUBLE 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 Documentation subroutine…
NAME dlamchf77.f – SYNOPSIS Functions/Subroutines DOUBLE 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 Documentation subroutine…
NAME dlamch.f – SYNOPSIS Functions/Subroutines DOUBLE PRECISION function dlamch (CMACH) DLAMCH DOUBLE PRECISION function dlamc3 (A, B) DLAMC3 Function/Subroutine Documentation DOUBLE 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…
NAME dlamchf77.f – SYNOPSIS Functions/Subroutines DOUBLE 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 Documentation subroutine…
NAME dlamchf77.f – SYNOPSIS Functions/Subroutines DOUBLE 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 Documentation subroutine…
NAME dlalsd.f – SYNOPSIS Functions/Subroutines subroutine dlalsd (UPLO, SMLSIZ, N, NRHS, D, E, B, LDB, RCOND, RANK, WORK, IWORK, INFO) DLALSD uses the singular value decomposition of A to solve the least squares problem. Function/Subroutine Documentation subroutine dlalsd (characterUPLO, integerSMLSIZ, integerN, integerNRHS, double precision, dimension( * )D, double precision, dimension( * )E, double precision, dimension(…
NAME dlalsa.f – SYNOPSIS Functions/Subroutines subroutine dlalsa (ICOMPQ, SMLSIZ, N, NRHS, B, LDB, BX, LDBX, U, LDU, VT, K, DIFL, DIFR, Z, POLES, GIVPTR, GIVCOL, LDGCOL, PERM, GIVNUM, C, S, WORK, IWORK, INFO) DLALSA computes the SVD of the coefficient matrix in compact form. Used by sgelsd. Function/Subroutine Documentation subroutine dlalsa (integerICOMPQ, integerSMLSIZ, integerN, integerNRHS,…
NAME dlals0.f – SYNOPSIS Functions/Subroutines subroutine dlals0 (ICOMPQ, NL, NR, SQRE, NRHS, B, LDB, BX, LDBX, PERM, GIVPTR, GIVCOL, LDGCOL, GIVNUM, LDGNUM, POLES, DIFL, DIFR, Z, K, C, S, WORK, INFO) DLALS0 applies back multiplying factors in solving the least squares problem using divide and conquer SVD approach. Used by sgelsd. Function/Subroutine Documentation subroutine dlals0…
NAME dlaln2.f – SYNOPSIS Functions/Subroutines subroutine dlaln2 (LTRANS, NA, NW, SMIN, CA, A, LDA, D1, D2, B, LDB, WR, WI, X, LDX, SCALE, XNORM, INFO) DLALN2 solves a 1-by-1 or 2-by-2 linear system of equations of the specified form. Function/Subroutine Documentation subroutine dlaln2 (logicalLTRANS, integerNA, integerNW, double precisionSMIN, double precisionCA, double precision, dimension( lda, *…
NAME dlaisnan.f – SYNOPSIS Functions/Subroutines LOGICAL function dlaisnan (DIN1, DIN2) DLAISNAN tests input for NaN by comparing two arguments for inequality. Function/Subroutine Documentation LOGICAL function dlaisnan (double precisionDIN1, double precisionDIN2) DLAISNAN tests input for NaN by comparing two arguments for inequality. Purpose: This routine is not for general use. It exists solely to avoid over-optimization…
NAME dlaic1.f – SYNOPSIS Functions/Subroutines subroutine dlaic1 (JOB, J, X, SEST, W, GAMMA, SESTPR, S, C) DLAIC1 applies one step of incremental condition estimation. Function/Subroutine Documentation subroutine dlaic1 (integerJOB, integerJ, double precision, dimension( j )X, double precisionSEST, double precision, dimension( j )W, double precisionGAMMA, double precisionSESTPR, double precisionS, double precisionC) DLAIC1 applies one step of…
NAME dlahrd.f – SYNOPSIS Functions/Subroutines subroutine dlahrd (N, K, NB, A, LDA, TAU, T, LDT, Y, LDY) DLAHRD reduces the first nb columns of a general rectangular matrix A so that elements below the k-th subdiagonal are zero, and returns auxiliary matrices which are needed to apply the transformation to the unreduced part of A….
NAME dlahr2.f – SYNOPSIS Functions/Subroutines subroutine dlahr2 (N, K, NB, A, LDA, TAU, T, LDT, Y, LDY) DLAHR2 reduces the specified number of first columns of a general rectangular matrix A so that elements below the specified subdiagonal are zero, and returns auxiliary matrices which are needed to apply the transformation to the unreduced part…
NAME dlahqr.f – SYNOPSIS Functions/Subroutines subroutine dlahqr (WANTT, WANTZ, N, ILO, IHI, H, LDH, WR, WI, ILOZ, IHIZ, Z, LDZ, INFO) DLAHQR computes the eigenvalues and Schur factorization of an upper Hessenberg matrix, using the double-shift/single-shift QR algorithm. Function/Subroutine Documentation subroutine dlahqr (logicalWANTT, logicalWANTZ, integerN, integerILO, integerIHI, double precision, dimension( ldh, * )H, integerLDH, double…
NAME dlagv2.f – SYNOPSIS Functions/Subroutines subroutine dlagv2 (A, LDA, B, LDB, ALPHAR, ALPHAI, BETA, CSL, SNL, CSR, SNR) DLAGV2 computes the Generalized Schur factorization of a real 2-by-2 matrix pencil (A,B) where B is upper triangular. Function/Subroutine Documentation subroutine dlagv2 (double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, * )B, integerLDB, double…
NAME dlagts.f – SYNOPSIS Functions/Subroutines subroutine dlagts (JOB, N, A, B, C, D, IN, Y, TOL, INFO) DLAGTS solves the system of equations (T-λI)x = y or (T-λI)Tx = y,where T is a general tridiagonal matrix and λ a scalar, using the LU factorization computed by slagtf. Function/Subroutine Documentation subroutine dlagts (integerJOB, integerN, double precision,…
NAME dlagtm.f – SYNOPSIS Functions/Subroutines subroutine dlagtm (TRANS, N, NRHS, ALPHA, DL, D, DU, X, LDX, BETA, B, LDB) DLAGTM performs a matrix-matrix product of the form C = αAB+βC, where A is a tridiagonal matrix, B and C are rectangular matrices, and α and β are scalars, which may be 0, 1, or -1….