Provided by: liblapack-doc_3.8.0-2_all
Functions subroutine clarfy (UPLO, N, V, INCV, TAU, C, LDC, WORK) CLARFY
This is the group of complex LAPACK TESTING EIG routines.
subroutine clarfy (character UPLO, integer N, complex, dimension( * ) V, integer INCV, complex TAU, complex, dimension( ldc, * ) C, integer LDC, complex, dimension( * ) WORK) CLARFY Purpose: CLARFY applies an elementary reflector, or Householder matrix, H, to an n x n Hermitian matrix C, from both the left and the right. H is represented in the form H = I - tau * v * v' where tau is a scalar and v is a vector. If tau is zero, then H is taken to be the unit matrix. Parameters: UPLO UPLO is CHARACTER*1 Specifies whether the upper or lower triangular part of the Hermitian matrix C is stored. = 'U': Upper triangle = 'L': Lower triangle N N is INTEGER The number of rows and columns of the matrix C. N >= 0. V V is COMPLEX array, dimension (1 + (N-1)*abs(INCV)) The vector v as described above. INCV INCV is INTEGER The increment between successive elements of v. INCV must not be zero. TAU TAU is COMPLEX The value tau as described above. C C is COMPLEX array, dimension (LDC, N) On entry, the matrix C. On exit, C is overwritten by H * C * H'. LDC LDC is INTEGER The leading dimension of the array C. LDC >= max( 1, N ). WORK WORK is COMPLEX array, dimension (N) Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: December 2016
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