debian man page for zlarfg

Query: zlarfg

OS: debian

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

zlarfg.f(3)							      LAPACK							       zlarfg.f(3)

NAME
zlarfg.f -
SYNOPSIS
Functions/Subroutines subroutine zlarfg (N, ALPHA, X, INCX, TAU) ZLARFG Function/Subroutine Documentation subroutine zlarfg (integerN, complex*16ALPHA, complex*16, dimension( * )X, integerINCX, complex*16TAU) ZLARFG Purpose: ZLARFG generates a complex elementary reflector H of order n, such that H**H * ( alpha ) = ( beta ), H**H * H = I. ( x ) ( 0 ) where alpha and beta are scalars, with beta real, and x is an (n-1)-element complex vector. H is represented in the form H = I - tau * ( 1 ) * ( 1 v**H ) , ( v ) where tau is a complex scalar and v is a complex (n-1)-element vector. Note that H is not hermitian. If the elements of x are all zero and alpha is real, then tau = 0 and H is taken to be the unit matrix. Otherwise 1 <= real(tau) <= 2 and abs(tau-1) <= 1 . Parameters: N N is INTEGER The order of the elementary reflector. ALPHA ALPHA is COMPLEX*16 On entry, the value alpha. On exit, it is overwritten with the value beta. X X is COMPLEX*16 array, dimension (1+(N-2)*abs(INCX)) On entry, the vector x. On exit, it is overwritten with the vector v. INCX INCX is INTEGER The increment between elements of X. INCX > 0. TAU TAU is COMPLEX*16 The value tau. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Definition at line 107 of file zlarfg.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.1 Sun May 26 2013 zlarfg.f(3)
Related Man Pages
zlarfg(3) - debian
zlarfgp(3) - debian
clarfgp.f(3) - debian
zlarfg.f(3) - debian
zlarfgp.f(3) - centos
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