NAME ssbgv.f – SYNOPSIS Functions/Subroutines subroutine ssbgv (JOBZ, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, W, Z, LDZ, WORK, INFO) SSBGST Function/Subroutine Documentation subroutine ssbgv (characterJOBZ, characterUPLO, integerN, integerKA, integerKB, real, dimension( ldab, * )AB, integerLDAB, real, dimension( ldbb, * )BB, integerLDBB, real, dimension( * )W, real, dimension( ldz, * )Z, integerLDZ, real, dimension(…
NAME ssbgst.f – SYNOPSIS Functions/Subroutines subroutine ssbgst (VECT, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, X, LDX, WORK, INFO) SSBGST Function/Subroutine Documentation subroutine ssbgst (characterVECT, characterUPLO, integerN, integerKA, integerKB, real, dimension( ldab, * )AB, integerLDAB, real, dimension( ldbb, * )BB, integerLDBB, real, dimension( ldx, * )X, integerLDX, real, dimension( * )WORK, integerINFO) SSBGST Purpose:…
NAME ssbevx.f – SYNOPSIS Functions/Subroutines subroutine ssbevx (JOBZ, RANGE, UPLO, N, KD, AB, LDAB, Q, LDQ, VL, VU, IL, IU, ABSTOL, M, W, Z, LDZ, WORK, IWORK, IFAIL, INFO) SSBEVX computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine ssbevx (characterJOBZ, characterRANGE, characterUPLO, integerN, integerKD, real, dimension( ldab,…
NAME ssbevd.f – SYNOPSIS Functions/Subroutines subroutine ssbevd (JOBZ, UPLO, N, KD, AB, LDAB, W, Z, LDZ, WORK, LWORK, IWORK, LIWORK, INFO) SSBEVD computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine ssbevd (characterJOBZ, characterUPLO, integerN, integerKD, real, dimension( ldab, * )AB, integerLDAB, real, dimension( * )W, real, dimension(…
NAME ssbev.f – SYNOPSIS Functions/Subroutines subroutine ssbev (JOBZ, UPLO, N, KD, AB, LDAB, W, Z, LDZ, WORK, INFO) SSBEV computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine ssbev (characterJOBZ, characterUPLO, integerN, integerKD, real, dimension( ldab, * )AB, integerLDAB, real, dimension( * )W, real, dimension( ldz, * )Z,…
NAME srscl.f – SYNOPSIS Functions/Subroutines subroutine srscl (N, SA, SX, INCX) SRSCL multiplies a vector by the reciprocal of a real scalar. Function/Subroutine Documentation subroutine srscl (integerN, realSA, real, dimension( * )SX, integerINCX) SRSCL multiplies a vector by the reciprocal of a real scalar. Purpose: SRSCL multiplies an n-element real vector x by the real…
NAME srotmg.f – SYNOPSIS Functions/Subroutines subroutine srotmg (SD1, SD2, SX1, SY1, SPARAM) SROTMG Function/Subroutine Documentation subroutine srotmg (realSD1, realSD2, realSX1, realSY1, real, dimension(5)SPARAM) SROTMG Purpose: CONSTRUCT THE MODIFIED GIVENS TRANSFORMATION MATRIX H WHICH ZEROS THE SECOND COMPONENT OF THE 2-VECTOR (SQRT(SD1)*SX1,SQRT(SD2)*> SY2)**T. WITH SPARAM(1)=SFLAG, H HAS ONE OF THE FOLLOWING FORMS.. SFLAG=-1.E0 SFLAG=0.E0 SFLAG=1.E0 SFLAG=-2.E0…
NAME srotm.f – SYNOPSIS Functions/Subroutines subroutine srotm (N, SX, INCX, SY, INCY, SPARAM) SROTM Function/Subroutine Documentation subroutine srotm (integerN, real, dimension(*)SX, integerINCX, real, dimension(*)SY, integerINCY, real, dimension(5)SPARAM) SROTM Purpose: APPLY THE MODIFIED GIVENS TRANSFORMATION, H, TO THE 2 BY N MATRIX (SX**T) , WHERE **T INDICATES TRANSPOSE. THE ELEMENTS OF SX ARE IN (SX**T) SX(LX+I*INCX),…
NAME srotg.f – SYNOPSIS Functions/Subroutines subroutine srotg (SA, SB, C, S) SROTG Function/Subroutine Documentation subroutine srotg (realSA, realSB, realC, realS) SROTG Purpose: SROTG construct givens plane rotation. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Further Details: jack dongarra, linpack, 3/11/78. Definition at line…
NAME srot.f – SYNOPSIS Functions/Subroutines subroutine srot (N, SX, INCX, SY, INCY, C, S) SROT Function/Subroutine Documentation subroutine srot (integerN, real, dimension(*)SX, integerINCX, real, dimension(*)SY, integerINCY, realC, realS) SROT Purpose: applies a plane rotation. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Further Details: jack…
xerbla_array.f – Synopsis Functions/Subroutines subroutine xerbla_array (SRNAME_ARRAY, SRNAME_LEN, INFO) XERBLA_ARRAY Function/Subroutine Documentation subroutine xerbla_array (character(1), dimension(srname_len)SRNAME_ARRAY, integerSRNAME_LEN, integerINFO) XERBLA_ARRAY Purpose: XERBLA_ARRAY assists other languages in calling XERBLA, the LAPACK and BLAS error handler. Rather than taking a Fortran string argument as the function’s name, XERBLA_ARRAY takes an array of single characters along with the array’s…
xerbla_array.f – Synopsis Functions/Subroutines subroutine xerbla_array (SRNAME_ARRAY, SRNAME_LEN, INFO) XERBLA_ARRAY Function/Subroutine Documentation subroutine xerbla_array (character(1), dimension(srname_len)SRNAME_ARRAY, integerSRNAME_LEN, integerINFO) XERBLA_ARRAY Purpose: XERBLA_ARRAY assists other languages in calling XERBLA, the LAPACK and BLAS error handler. Rather than taking a Fortran string argument as the function’s name, XERBLA_ARRAY takes an array of single characters along with the array’s…
xerbla.f – Synopsis Functions/Subroutines subroutine xerbla (SRNAME, INFO) XERBLA Function/Subroutine Documentation subroutine xerbla (character*(*)SRNAME, integerINFO) XERBLA Purpose: XERBLA is an error handler for the LAPACK routines. It is called by an LAPACK routine if an input parameter has an invalid value. A message is printed and execution stops. Installers may consider modifying the STOP statement…
xerbla.f – Synopsis Functions/Subroutines subroutine xerbla (SRNAME, INFO) XERBLA Function/Subroutine Documentation subroutine xerbla (character*(*)SRNAME, integerINFO) XERBLA Purpose: XERBLA is an error handler for the LAPACK routines. It is called by an LAPACK routine if an input parameter has an invalid value. A message is printed and execution stops. Installers may consider modifying the STOP statement…
ilaver.f – Synopsis Functions/Subroutines subroutine ilaver (VERS_MAJOR, VERS_MINOR, VERS_PATCH) ILAVER returns the LAPACK version. Function/Subroutine Documentation subroutine ilaver (integerVERS_MAJOR, integerVERS_MINOR, integerVERS_PATCH) ILAVER returns the LAPACK version. Purpose: This subroutine returns the LAPACK version. Parameters: VERS_MAJOR return the lapack major version VERS_MINOR return the lapack minor version from the major version VERS_PATCH return the lapack…
ilaver.f – Synopsis Functions/Subroutines subroutine ilaver (VERS_MAJOR, VERS_MINOR, VERS_PATCH) ILAVER returns the LAPACK version. Function/Subroutine Documentation subroutine ilaver (integerVERS_MAJOR, integerVERS_MINOR, integerVERS_PATCH) ILAVER returns the LAPACK version. Purpose: This subroutine returns the LAPACK version. Parameters: VERS_MAJOR return the lapack major version VERS_MINOR return the lapack minor version from the major version VERS_PATCH return the lapack…
NAME sptts2.f – SYNOPSIS Functions/Subroutines subroutine sptts2 (N, NRHS, D, E, B, LDB) SPTTS2 solves a tridiagonal system of the form AX=B using the L D LH factorization computed by spttrf. Function/Subroutine Documentation subroutine sptts2 (integerN, integerNRHS, real, dimension( * )D, real, dimension( * )E, real, dimension( ldb, * )B, integerLDB) SPTTS2 solves a tridiagonal…
NAME spttrs.f – SYNOPSIS Functions/Subroutines subroutine spttrs (N, NRHS, D, E, B, LDB, INFO) SPTTRS Function/Subroutine Documentation subroutine spttrs (integerN, integerNRHS, real, dimension( * )D, real, dimension( * )E, real, dimension( ldb, * )B, integerLDB, integerINFO) SPTTRS Purpose: SPTTRS solves a tridiagonal system of the form A * X = B using the L*D*L**T factorization…
NAME spttrf.f – SYNOPSIS Functions/Subroutines subroutine spttrf (N, D, E, INFO) SPTTRF Function/Subroutine Documentation subroutine spttrf (integerN, real, dimension( * )D, real, dimension( * )E, integerINFO) SPTTRF Purpose: SPTTRF computes the L*D*L**T factorization of a real symmetric positive definite tridiagonal matrix A. The factorization may also be regarded as having the form A = U**T*D*U….
sptsvx.f – Synopsis Functions/Subroutines subroutine sptsvx (FACT, N, NRHS, D, E, DF, EF, B, LDB, X, LDX, RCOND, FERR, BERR, WORK, INFO) SPTSVX computes the solution to system of linear equations A * X = B for PT matrices Function/Subroutine Documentation subroutine sptsvx (characterFACT, integerN, integerNRHS, real, dimension( * )D, real, dimension( * )E, real,…