debian man page for clarfgp

Query: clarfgp

OS: debian

Section: 3

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

clarfgp.f(3)							      LAPACK							      clarfgp.f(3)

NAME
clarfgp.f -
SYNOPSIS
Functions/Subroutines subroutine clarfgp (N, ALPHA, X, INCX, TAU) CLARFGP Function/Subroutine Documentation subroutine clarfgp (integerN, complexALPHA, complex, dimension( * )X, integerINCX, complexTAU) CLARFGP Purpose: CLARFGP 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, beta is real and non-negative, 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. Parameters: N N is INTEGER The order of the elementary reflector. ALPHA ALPHA is COMPLEX On entry, the value alpha. On exit, it is overwritten with the value beta. X X is COMPLEX 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 The value tau. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Definition at line 105 of file clarfgp.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.1 Sun May 26 2013 clarfgp.f(3)
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