# clauum(3) [centos man page]

clauum.f(3) LAPACK clauum.f(3)NAME

clauum.f-SYNOPSIS

Functions/Subroutines subroutine clauum (UPLO, N, A, LDA, INFO) CLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm).Function/Subroutine Documentation subroutine clauum (characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, integerINFO) CLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm). Purpose: CLAUUM computes the product U * U**H or L**H * L, where the triangular factor U or L is stored in the upper or lower triangular part of the array A. If UPLO = 'U' or 'u' then the upper triangle of the result is stored, overwriting the factor U in A. If UPLO = 'L' or 'l' then the lower triangle of the result is stored, overwriting the factor L in A. This is the blocked form of the algorithm, calling Level 3 BLAS. Parameters: UPLO UPLO is CHARACTER*1 Specifies whether the triangular factor stored in the array A is upper or lower triangular: = 'U': Upper triangular = 'L': Lower triangular N N is INTEGER The order of the triangular factor U or L. N >= 0. A A is COMPLEX array, dimension (LDA,N) On entry, the triangular factor U or L. On exit, if UPLO = 'U', the upper triangle of A is overwritten with the upper triangle of the product U * U**H; if UPLO = 'L', the lower triangle of A is overwritten with the lower triangle of the product L**H * L. LDA LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). INFO INFO is INTEGER = 0: successful exit < 0: if INFO =, the k-th argument had an illegal value Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: September 2012 Definition at line 103 of file clauum.f.-kAuthorGenerated automatically by Doxygen for LAPACK from the source code.Version 3.4.2Tue Sep 25 2012 clauum.f(3)

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dlauum.f(3) LAPACK dlauum.f(3)NAME

dlauum.f-SYNOPSIS

Functions/Subroutines subroutine dlauum (UPLO, N, A, LDA, INFO) DLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm).Function/Subroutine Documentation subroutine dlauum (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integerINFO) DLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm). Purpose: DLAUUM computes the product U * U**T or L**T * L, where the triangular factor U or L is stored in the upper or lower triangular part of the array A. If UPLO = 'U' or 'u' then the upper triangle of the result is stored, overwriting the factor U in A. If UPLO = 'L' or 'l' then the lower triangle of the result is stored, overwriting the factor L in A. This is the blocked form of the algorithm, calling Level 3 BLAS. Parameters: UPLO UPLO is CHARACTER*1 Specifies whether the triangular factor stored in the array A is upper or lower triangular: = 'U': Upper triangular = 'L': Lower triangular N N is INTEGER The order of the triangular factor U or L. N >= 0. A A is DOUBLE PRECISION array, dimension (LDA,N) On entry, the triangular factor U or L. On exit, if UPLO = 'U', the upper triangle of A is overwritten with the upper triangle of the product U * U**T; if UPLO = 'L', the lower triangle of A is overwritten with the lower triangle of the product L**T * L. LDA LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). INFO INFO is INTEGER = 0: successful exit < 0: if INFO =, the k-th argument had an illegal value Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: September 2012 Definition at line 103 of file dlauum.f.-kAuthorGenerated automatically by Doxygen for LAPACK from the source code.Version 3.4.2Tue Sep 25 2012 dlauum.f(3)