Unix/Linux Go Back    


CentOS 7.0 - man page for zlargv (centos section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


zlargv.f(3)				      LAPACK				      zlargv.f(3)

NAME
       zlargv.f -

SYNOPSIS
   Functions/Subroutines
       subroutine zlargv (N, X, INCX, Y, INCY, C, INCC)
	   ZLARGV generates a vector of plane rotations with real cosines and complex sines.

Function/Subroutine Documentation
   subroutine zlargv (integerN, complex*16, dimension( * )X, integerINCX, complex*16, dimension(
       * )Y, integerINCY, double precision, dimension( * )C, integerINCC)
       ZLARGV generates a vector of plane rotations with real cosines and complex sines.

       Purpose:

	    ZLARGV generates a vector of complex plane rotations with real
	    cosines, determined by elements of the complex vectors x and y.
	    For i = 1,2,...,n

	       (	c(i)   s(i) ) ( x(i) ) = ( r(i) )
	       ( -conjg(s(i))  c(i) ) ( y(i) ) = (   0	)

	       where c(i)**2 + ABS(s(i))**2 = 1

	    The following conventions are used (these are the same as in ZLARTG,
	    but differ from the BLAS1 routine ZROTG):
	       If y(i)=0, then c(i)=1 and s(i)=0.
	       If x(i)=0, then c(i)=0 and s(i) is chosen so that r(i) is real.

       Parameters:
	   N

		     N is INTEGER
		     The number of plane rotations to be generated.

	   X

		     X is COMPLEX*16 array, dimension (1+(N-1)*INCX)
		     On entry, the vector x.
		     On exit, x(i) is overwritten by r(i), for i = 1,...,n.

	   INCX

		     INCX is INTEGER
		     The increment between elements of X. INCX > 0.

	   Y

		     Y is COMPLEX*16 array, dimension (1+(N-1)*INCY)
		     On entry, the vector y.
		     On exit, the sines of the plane rotations.

	   INCY

		     INCY is INTEGER
		     The increment between elements of Y. INCY > 0.

	   C

		     C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
		     The cosines of the plane rotations.

	   INCC

		     INCC is INTEGER
		     The increment between elements of C. INCC > 0.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Further Details:

	     6-6-96 - Modified with a new algorithm by W. Kahan and J. Demmel

	     This version has a few statements commented out for thread safety
	     (machine parameters are computed on each entry). 10 feb 03, SJH.

       Definition at line 123 of file zlargv.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2				 Tue Sep 25 2012			      zlargv.f(3)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 03:19 PM.