NAME dlerror – obtain error diagnostic for functions in the dlopen API SYNOPSIS #include <dlfcn.h> char *dlerror(void); Link with -ldl. DESCRIPTION The dlerror() function returns a human-readable, null-terminated string describing the most recent error that occurred from a call to one of the functions in the dlopen API since the last call to dlerror(). The…
NAME dlclose, dlopen, dlmopen – open and close a shared object SYNOPSIS #include <dlfcn.h> void *dlopen(const char *filename, int flags); int dlclose(void *handle); #define _GNU_SOURCE #include <dlfcn.h> void *dlmopen(Lmid_t lmid, const char *filename, int flags); Link with -ldl. DESCRIPTION dlopen() The function dlopen() loads the dynamic shared object (shared library) file named by the null-terminated…
dlauum.f – Synopsis Functions/Subroutines subroutine dlauum (UPLO, N, A, LDA, INFO) DLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm). Function/Subroutine Documentation subroutine dlauum (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integerINFO) DLAUUM computes the product UUH or LHL, where U and L…
dlauu2.f – Synopsis Functions/Subroutines subroutine dlauu2 (UPLO, N, A, LDA, INFO) DLAUU2 computes the product UUH or LHL, where U and L are upper or lower triangular matrices (unblocked algorithm). Function/Subroutine Documentation subroutine dlauu2 (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integerINFO) DLAUU2 computes the product UUH or LHL, where U and L…
dlatzm.f – Synopsis Functions/Subroutines subroutine dlatzm (SIDE, M, N, V, INCV, TAU, C1, C2, LDC, WORK) DLATZM Function/Subroutine Documentation subroutine dlatzm (characterSIDE, integerM, integerN, double precision, dimension( * )V, integerINCV, double precisionTAU, double precision, dimension( ldc, * )C1, double precision, dimension( ldc, * )C2, integerLDC, double precision, dimension( * )WORK) DLATZM Purpose: This routine is…
dlatrz.f – Synopsis Functions/Subroutines subroutine dlatrz (M, N, L, A, LDA, TAU, WORK) DLATRZ factors an upper trapezoidal matrix by means of orthogonal transformations. Function/Subroutine Documentation subroutine dlatrz (integerM, integerN, integerL, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK) DLATRZ factors an upper trapezoidal matrix by…
dlatrs.f – Synopsis Functions/Subroutines subroutine dlatrs (UPLO, TRANS, DIAG, NORMIN, N, A, LDA, X, SCALE, CNORM, INFO) DLATRS solves a triangular system of equations with the scale factor set to prevent overflow. Function/Subroutine Documentation subroutine dlatrs (characterUPLO, characterTRANS, characterDIAG, characterNORMIN, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )X, double precisionSCALE,…
dlatrd.f – Synopsis Functions/Subroutines subroutine dlatrd (UPLO, N, NB, A, LDA, E, TAU, W, LDW) DLATRD reduces the first nb rows and columns of a symmetric/Hermitian matrix A to real tridiagonal form by an orthogonal similarity transformation. Function/Subroutine Documentation subroutine dlatrd (characterUPLO, integerN, integerNB, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( *…
dlatps.f – Synopsis Functions/Subroutines subroutine dlatps (UPLO, TRANS, DIAG, NORMIN, N, AP, X, SCALE, CNORM, INFO) DLATPS solves a triangular system of equations with the matrix held in packed storage. Function/Subroutine Documentation subroutine dlatps (characterUPLO, characterTRANS, characterDIAG, characterNORMIN, integerN, double precision, dimension( * )AP, double precision, dimension( * )X, double precisionSCALE, double precision, dimension( *…
dlatdf.f – Synopsis Functions/Subroutines subroutine dlatdf (IJOB, N, Z, LDZ, RHS, RDSUM, RDSCAL, IPIV, JPIV) DLATDF uses the LU factorization of the n-by-n matrix computed by sgetc2 and computes a contribution to the reciprocal Dif-estimate. Function/Subroutine Documentation subroutine dlatdf (integerIJOB, integerN, double precision, dimension( ldz, * )Z, integerLDZ, double precision, dimension( * )RHS, double precisionRDSUM,…
dlatbs.f – Synopsis Functions/Subroutines subroutine dlatbs (UPLO, TRANS, DIAG, NORMIN, N, KD, AB, LDAB, X, SCALE, CNORM, INFO) DLATBS solves a triangular banded system of equations. Function/Subroutine Documentation subroutine dlatbs (characterUPLO, characterTRANS, characterDIAG, characterNORMIN, integerN, integerKD, double precision, dimension( ldab, * )AB, integerLDAB, double precision, dimension( * )X, double precisionSCALE, double precision, dimension( * )CNORM,…
dlat2s.f – Synopsis Functions/Subroutines subroutine dlat2s (UPLO, N, A, LDA, SA, LDSA, INFO) DLAT2S converts a double-precision triangular matrix to a single-precision triangular matrix. Function/Subroutine Documentation subroutine dlat2s (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, real, dimension( ldsa, * )SA, integerLDSA, integerINFO) DLAT2S converts a double-precision triangular matrix to a single-precision triangular matrix….
NAME dlasyf_rook.f – SYNOPSIS Functions/Subroutines subroutine dlasyf_rook (UPLO, N, NB, KB, A, LDA, IPIV, W, LDW, INFO) DLASYF_ROOK *> DLASYF_ROOK computes a partial factorization of a real symmetric matrix using the bounded Bunch-Kaufman (‘rook’) diagonal pivoting method. Function/Subroutine Documentation subroutine dlasyf_rook (characterUPLO, integerN, integerNB, integerKB, double precision, dimension( lda, * )A, integerLDA, integer, dimension( *…
dlasyf.f – Synopsis Functions/Subroutines subroutine dlasyf (UPLO, N, NB, KB, A, LDA, IPIV, W, LDW, INFO) DLASYF computes a partial factorization of a real symmetric matrix, using the diagonal pivoting method. Function/Subroutine Documentation subroutine dlasyf (characterUPLO, integerN, integerNB, integerKB, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( ldw, *…
dlasy2.f – Synopsis Functions/Subroutines subroutine dlasy2 (LTRANL, LTRANR, ISGN, N1, N2, TL, LDTL, TR, LDTR, B, LDB, SCALE, X, LDX, XNORM, INFO) DLASY2 solves the Sylvester matrix equation where the matrices are of order 1 or 2. Function/Subroutine Documentation subroutine dlasy2 (logicalLTRANL, logicalLTRANR, integerISGN, integerN1, integerN2, double precision, dimension( ldtl, * )TL, integerLDTL, double precision,…
dlaswp.f – Synopsis Functions/Subroutines subroutine dlaswp (N, A, LDA, K1, K2, IPIV, INCX) DLASWP performs a series of row interchanges on a general rectangular matrix. Function/Subroutine Documentation subroutine dlaswp (integerN, double precision, dimension( lda, * )A, integerLDA, integerK1, integerK2, integer, dimension( * )IPIV, integerINCX) DLASWP performs a series of row interchanges on a general rectangular…
dlasv2.f – Synopsis Functions/Subroutines subroutine dlasv2 (F, G, H, SSMIN, SSMAX, SNR, CSR, SNL, CSL) DLASV2 computes the singular value decomposition of a 2-by-2 triangular matrix. Function/Subroutine Documentation subroutine dlasv2 (double precisionF, double precisionG, double precisionH, double precisionSSMIN, double precisionSSMAX, double precisionSNR, double precisionCSR, double precisionSNL, double precisionCSL) DLASV2 computes the singular value decomposition of…
dlassq.f – Synopsis Functions/Subroutines subroutine dlassq (N, X, INCX, SCALE, SUMSQ) DLASSQ updates a sum of squares represented in scaled form. Function/Subroutine Documentation subroutine dlassq (integerN, double precision, dimension( * )X, integerINCX, double precisionSCALE, double precisionSUMSQ) DLASSQ updates a sum of squares represented in scaled form. Purpose: DLASSQ returns the values scl and smsq such…
dlasrt.f – Synopsis Functions/Subroutines subroutine dlasrt (ID, N, D, INFO) DLASRT sorts numbers in increasing or decreasing order. Function/Subroutine Documentation subroutine dlasrt (characterID, integerN, double precision, dimension( * )D, integerINFO) DLASRT sorts numbers in increasing or decreasing order. Purpose: Sort the numbers in D in increasing order (if ID = ‘I’) or in decreasing order…
dlasr.f – Synopsis Functions/Subroutines subroutine dlasr (SIDE, PIVOT, DIRECT, M, N, C, S, A, LDA) DLASR applies a sequence of plane rotations to a general rectangular matrix. Function/Subroutine Documentation subroutine dlasr (characterSIDE, characterPIVOT, characterDIRECT, integerM, integerN, double precision, dimension( * )C, double precision, dimension( * )S, double precision, dimension( lda, * )A, integerLDA) DLASR applies…