Section 3: library functions
dspev.f – Synopsis Functions/Subroutines subroutine dspev (JOBZ, UPLO, N, AP, W, Z, LDZ, WORK, INFO) DSPEV computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine dspev (characterJOBZ, characterUPLO, integerN, double precision, dimension( * )AP, double precision, dimension( * )W, double precision, dimension( ldz, * )Z, integerLDZ, double precision,…
dspcon.f – Synopsis Functions/Subroutines subroutine dspcon (UPLO, N, AP, IPIV, ANORM, RCOND, WORK, IWORK, INFO) DSPCON Function/Subroutine Documentation subroutine dspcon (characterUPLO, integerN, double precision, dimension( * )AP, integer, dimension( * )IPIV, double precisionANORM, double precisionRCOND, double precision, dimension( * )WORK, integer, dimension( * )IWORK, integerINFO) DSPCON Purpose: DSPCON estimates the reciprocal of the condition number…
dsgesv.f – Synopsis Functions/Subroutines subroutine dsgesv (N, NRHS, A, LDA, IPIV, B, LDB, X, LDX, WORK, SWORK, ITER, INFO) DSGESV computes the solution to system of linear equations A * X = B for GE matrices (mixed precision with iterative refinement) Function/Subroutine Documentation subroutine dsgesv (integerN, integerNRHS, double precision, dimension( lda, * )A, integerLDA, integer,…
dsfrk.f – Synopsis Functions/Subroutines subroutine dsfrk (TRANSR, UPLO, TRANS, N, K, ALPHA, A, LDA, BETA, C) DSFRK performs a symmetric rank-k operation for matrix in RFP format. Function/Subroutine Documentation subroutine dsfrk (characterTRANSR, characterUPLO, characterTRANS, integerN, integerK, double precisionALPHA, double precision, dimension( lda, * )A, integerLDA, double precisionBETA, double precision, dimension( * )C) DSFRK performs a…
NAME dsecndtst.f – SYNOPSIS Functions/Subroutines program __dsecndtst.f__ DSECNDTST subroutine mysub (N, X, Y) Function/Subroutine Documentation program __dsecndtst.f__ () DSECNDTST Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Definition at line 37 of file dsecndtst.f. subroutine mysub (integerN, double precision, dimension(n)X, double precision, dimension(n)Y) Definition at line…
dsecndtst.f – Synopsis Functions/Subroutines program __dsecndtst.f__ DSECNDTST subroutine mysub (N, X, Y) Function/Subroutine Documentation program __dsecndtst.f__ () DSECNDTST Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Definition at line 37 of file dsecndtst.f. subroutine mysub (integerN, double precision, dimension(n)X, double precision, dimension(n)Y) Definition at line 120…
dsecnd_NONE.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND returns nothing Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND returns nothing Purpose: DSECND returns nothing instead of returning the user time for a process in seconds. If you are using that routine, it means that neither EXTERNAL ETIME, EXTERNAL ETIME_, INTERNAL ETIME, INTERNAL CPU_TIME…
dsecnd_NONE.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND returns nothing Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND returns nothing Purpose: DSECND returns nothing instead of returning the user time for a process in seconds. If you are using that routine, it means that neither EXTERNAL ETIME, EXTERNAL ETIME_, INTERNAL ETIME, INTERNAL CPU_TIME…
dsecnd_INT_ETIME.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using the INTERNAL function ETIME. Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using the INTERNAL function ETIME. Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the INTERNAL function ETIME. Author: Univ. of Tennessee Univ….
dsecnd_INT_ETIME.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using the INTERNAL function ETIME. Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using the INTERNAL function ETIME. Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the INTERNAL function ETIME. Author: Univ. of Tennessee Univ….
dsecnd_INT_CPU_TIME.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using INTERNAL function CPU_TIME. Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using INTERNAL function CPU_TIME. Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the INTERNAL function CPU_TIME. Author: Univ. of Tennessee Univ. of California…
dsecnd_INT_CPU_TIME.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using INTERNAL function CPU_TIME. Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using INTERNAL function CPU_TIME. Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the INTERNAL function CPU_TIME. Author: Univ. of Tennessee Univ. of California…
dsecnd_EXT_ETIME_.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using ETIME_ Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using ETIME_ Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the system function ETIME_. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado…
dsecnd_EXT_ETIME_.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using ETIME_ Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using ETIME_ Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the system function ETIME_. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado…
dsecnd_EXT_ETIME.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using ETIME Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using ETIME Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the EXTERNAL system function ETIME. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of…
dsecnd_EXT_ETIME.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsecnd () DSECND Using ETIME Function/Subroutine Documentation DOUBLE PRECISION function dsecnd () DSECND Using ETIME Purpose: DSECND returns the user time for a process in seconds. This version gets the time from the EXTERNAL system function ETIME. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of…
dsdot.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dsdot (N, SX, INCX, SY, INCY) DSDOT Function/Subroutine Documentation DOUBLE PRECISION function dsdot (integerN, real, dimension(*)SX, integerINCX, real, dimension(*)SY, integerINCY) DSDOT Purpose: Compute the inner product of two vectors with extended precision accumulation and result. Returns D.P. dot product accumulated in D.P., for S.P. SX and SY DSDOT…
dscal.f – Synopsis Functions/Subroutines subroutine dscal (N, DA, DX, INCX) DSCAL Function/Subroutine Documentation subroutine dscal (integerN, double precisionDA, double precision, dimension(*)DX, integerINCX) DSCAL Purpose: DSCAL scales a vector by a constant. uses unrolled loops for increment equal to one. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date:…
dsbtrd.f – Synopsis Functions/Subroutines subroutine dsbtrd (VECT, UPLO, N, KD, AB, LDAB, D, E, Q, LDQ, WORK, INFO) DSBTRD Function/Subroutine Documentation subroutine dsbtrd (characterVECT, characterUPLO, integerN, integerKD, double precision, dimension( ldab, * )AB, integerLDAB, double precision, dimension( * )D, double precision, dimension( * )E, double precision, dimension( ldq, * )Q, integerLDQ, double precision, dimension( *…
dsbmv.f – Synopsis Functions/Subroutines subroutine dsbmv (UPLO, N, K, ALPHA, A, LDA, X, INCX, BETA, Y, INCY) DSBMV Function/Subroutine Documentation subroutine dsbmv (characterUPLO, integerN, integerK, double precisionALPHA, double precision, dimension(lda,*)A, integerLDA, double precision, dimension(*)X, integerINCX, double precisionBETA, double precision, dimension(*)Y, integerINCY) DSBMV Purpose: DSBMV performs the matrix-vector operation y := alpha*A*x + beta*y, where alpha…