ilaprec.f(3) LAPACK ilaprec.f(3)NAME
ilaprec.f -
SYNOPSIS
Functions/Subroutines
INTEGER function ilaprec (PREC)
ILAPREC
Function/Subroutine Documentation
INTEGER function ilaprec (characterPREC)
ILAPREC
Purpose:
This subroutine translated from a character string specifying an
intermediate precision to the relevant BLAST-specified integer
constant.
ILAPREC returns an INTEGER. If ILAPREC < 0, then the input is not a
character indicating a supported intermediate precision. Otherwise
ILAPREC returns the constant value corresponding to PREC.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 59 of file ilaprec.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 ilaprec.f(3)
Check Out this Related Man Page
drotm.f(3) LAPACK drotm.f(3)NAME
drotm.f -
SYNOPSIS
Functions/Subroutines
subroutine drotm (N, DX, INCX, DY, INCY, DPARAM)
DROTM
Function/Subroutine Documentation
subroutine drotm (integerN, double precision, dimension(*)DX, integerINCX, double precision, dimension(*)DY, integerINCY, double precision,
dimension(5)DPARAM)
DROTM Purpose:
APPLY THE MODIFIED GIVENS TRANSFORMATION, H, TO THE 2 BY N MATRIX
(DX**T) , WHERE **T INDICATES TRANSPOSE. THE ELEMENTS OF DX ARE IN
(DY**T)
DX(LX+I*INCX), I = 0 TO N-1, WHERE LX = 1 IF INCX .GE. 0, ELSE
LX = (-INCX)*N, AND SIMILARLY FOR SY USING LY AND INCY.
WITH DPARAM(1)=DFLAG, H HAS ONE OF THE FOLLOWING FORMS..
DFLAG=-1.D0 DFLAG=0.D0 DFLAG=1.D0 DFLAG=-2.D0
(DH11 DH12) (1.D0 DH12) (DH11 1.D0) (1.D0 0.D0)
H=( ) ( ) ( ) ( )
(DH21 DH22), (DH21 1.D0), (-1.D0 DH22), (0.D0 1.D0).
SEE DROTMG FOR A DESCRIPTION OF DATA STORAGE IN DPARAM.
Parameters:
N
N is INTEGER
number of elements in input vector(s)
DX
DX is DOUBLE PRECISION array, dimension N
double precision vector with N elements
INCX
INCX is INTEGER
storage spacing between elements of DX
DY
DY is DOUBLE PRECISION array, dimension N
double precision vector with N elements
INCY
INCY is INTEGER
storage spacing between elements of DY
DPARAM
DPARAM is DOUBLE PRECISION array, dimension 5
DPARAM(1)=DFLAG
DPARAM(2)=DH11
DPARAM(3)=DH21
DPARAM(4)=DH12
DPARAM(5)=DH22
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 99 of file drotm.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 drotm.f(3)
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