*nix Documentation Project
·  Home
 +   man pages
·  Linux HOWTOs
·  FreeBSD Tips
·  *niX Forums

  man pages->IRIX man pages -> libblas/rotmg (3)              
Title
Content
Arch
Section
 

Contents


_ROTMG(3F)							    _ROTMG(3F)


NAME    [Toc]    [Back]

     drotmg, srotmg - BLAS Level-1. Compute the	elements of a modified Givens
     plane rotation.

FORTRAN	SYNOPSIS
     subroutine	drotmg(	d1, d2,	x1, y1,	param )
     double precision	d1, d2,	x1, y1
     double precision	param( 5 )

     subroutine	srotmg(	d1, d2,	x1, y1,	param )
     real		d1, d2,	x1, y1
     real		param( 5 )

DESCRIPTION    [Toc]    [Back]

     DROTMG and	SROTMG compute the elements of a modified Givens rotation
     matrix.

PARAMETERS    [Toc]    [Back]

     d1	     (input/output)
	     On	input, this value is the first diagonal	element	of the scaling
	     matrix D.	On first call to DROTMG	or SROTMG, this	value is
	     typically 1.0. Subsequent calls typically use the value from the
	     previous call.
	     On	output,	this value is the first	diagonal element of the
	     updated scaling matrix D'.

     d2	     (input/output)
	     On	input, this value is the second	diagonal element of the
	     scaling matrix D.	On first call to DROTMG	or SROTMG, this	value
	     is	typically 1.0. Subsequent calls	typically use the value	from
	     the previous call.
	     On	output,	this value is the first	diagonal element of the
	     updated scaling matrix D'.

     x1	     (input/output)
	     On	input, this value is the x-coordinate of the vector used to
	     define the	angle of rotation before scaling (multiplying by the
	     matrix D).
	     On	output,	this value is the x-coordinate of the rotated vector
	     before scaling (multiplying by the	matrix D').

     y1	     (input/output)
	     On	input, this value is the y-coordinate of the vector used to
	     define the	angle of rotation before scaling (multiplying by the
	     matrix D).
	     On	output,	this value is the y coordinate of the rotated vecttor
	     before scaling (multiplying by the	matrix D').






									Page 1






_ROTMG(3F)							    _ROTMG(3F)



     param   (output)
	     This array	contains rotation matrix information. DROTMG or	SROTMG
	     set up the	computed elements in param from	inputs d1, d2, x1, and
	     y1.

SEE ALSO    [Toc]    [Back]

      
      
     DROTM or SROTM.


									PPPPaaaaggggeeee 2222
[ Back ]
 Similar pages
Name OS Title
rotm IRIX BLAS Level-1. Applies a modified Givens rotation. FORTRAN SYNOPSIS subroutine drotm( n, x, incx, y, incy, para
ger IRIX BLAS Level Two Rank 1 Operation FORTRAN 77 SYNOPSIS subroutine dger( m, n, alpha, x, incx, y, incy, a, lda ) i
gemm IRIX BLAS level three Matrix Product FORTRAN 77 SYNOPSIS subroutine dgemm( transa,transb,m,n,k,alpha,a,lda,b,ldb,be
syr2k IRIX BLAS level three Symmetric Rank 2K Update. FORTRAN 77 SYNOPSIS subroutine dsyr2k(uplo,trans,n,k,alpha,a,lda,b,
her2k IRIX BLAS level three Hermitian Rank 2K Update FORTRAN 77 SYNOPSIS subroutine zher2k( uplo,trans,n,k,alpha,a,lda,b,
symm IRIX BLAS level three Symmetric Matrix Product FORTRAN 77 SYNOPSIS subroutine dsymm( side,uplo,m,n,alpha,a,lda,b,ld
gbmv IRIX BLAS Level Two Matrix-Vector Product FORTRAN 77 SYNOPSIS subroutine dgbmv( trans,m,n,kl,ku,alpha,a,lda,x,incx,
syrk IRIX BLAS level three Symmetric Rank K Update. FORTRAN 77 SYNOPSIS subroutine dsyrk( uplo, trans, n, k, alpha, a, l
trsm IRIX BLAS level three Solution of Systems of Equations FORTRAN 77 SYNOPSIS subroutine dtrsm( side, uplo, transa, di
hemm IRIX BLAS level three Hermitian Matrix Product FORTRAN 77 SYNOPSIS subroutine zhemm( side,uplo,m,n,alpha,a,lda,b,ld
Copyright © 2004-2005 DeniX Solutions SRL
newsletter delivery service