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elpa_hermitian_multiply(3) Library Functions Manual elpa_hermitian_multiply(3) NAME elpa_hermitian_multiply - Performs C = A**H * B SYNOPSIS FORTRAN INTERFACE use elpa class(elpa_t), pointer :: elpa call elpa%hermitian_multiply (uplo_a, uplo_c, ncb, a, b, nrows_b, ncols_b, & c, nrows_c, ncols_c, error)" With the definitions of the input and output variables: character*1 :: uplo_a set to 'U' if A is upper triangular, 'L' if A is lower triangular or anything else if A is a full matrix character*1 :: uplo_c set to 'U' if only the upper diagonal part of C is needed, to 'L' if only the upper diagonal part of C is needed, or to anything else if the full matrix C is needed integer :: ncb The number of columns of the global matrices b and c datatype :: a The matrix a. The dimensions of matrix a must be set BEFORE with the methods elpa_set(3) and elpa_setup(3). The datatype of the matrix can be one of "real(kind=c_double)", "real(kind=c_float)", "complex(kind=c_double)", or "complex(kind=c_float)" datatype :: b The matrix b. The dimensions of the matrix are specified by the parametes nrows_b and ncols_b. The datatype of the matrix can be one of "real(kind=c_double)", "real(kind=c_float)", "complex(kind=c_double)", or "complex(kind=c_float)" integer :: nrows_b The number of rows of matrix b integer :: ncols_b The number of columns of matrix b datatype :: c The matrix c. The dimensions of the matrix are specified by the parametes nrows_c and ncols_c. The datatype of the matrix can be one of "real(kind=c_double)", "real(kind=c_float)", "complex(kind=c_double)", or "complex(kind=c_float)" integer :: nrows_c The number of rows of matrix c integer :: ncols_c The number of columns of matrix c integer, optional :: error The return error code of the function. Should be "ELPA_OK". The error code can be querried with the function elpa_strerr(3) C INTERFACE #include <elpa/elpa.h> elpa_t handle; void elpa_hermitian_multiply(elpa_t handle, char uplo_a, char uplo_c, int ncb, datatype *a, datatype *b, int nrows_b, int ncols_b, datatype *c, int nrows_c, int ncols_c, int *error); With the definitions of the input and output variables: elpa_t handle; The handle to the ELPA object char uplo_a; set to 'U' if A is upper triangular, 'L' if A is lower triangular or anything else if A is a full matrix char uplo_c; set to 'U' if only the upper diagonal part of C is needed, to 'L' if only the upper diagonal part of C is needed, or to anything else if the full matrix C is needed int ncb; The number of columns of the global matrices b and c datatype *a; The matrix a. The dimensions of matrix a must be set BEFORE with the methods elpa_set(3) and elpa_setup(3). The datatype of the matrix can be one of "double", "float", "double complex", or "float complex" datatype *b; The matrix b. The dimensions of the matrix are specified by the parametes nrows_b and ncols_b. The datatype of the matrix can be one of "double", "float", "double complex", or "float complex" int nrows_b; The number of rows of matrix b int ncols_b; The number of columns of matrix b datatype *c; The matrix c. The dimensions of the matrix are specified by the parametes nrows_c and ncols_c. The datatype of the matrix can be one of "double", "float", "double complex", or "float complex" int nrows_c; The number of rows of matrix c int ncols_c; The number of columns of matrix c int *error The return error code of the function. Should be "ELPA_OK". The error code can be querried with the function elpa_strerr(3) DESCRIPTION Performa a "hermitian" multiplication C = A**T * B for real matrices and C=A**H * B for complex matrices. The functions elpa_init(3), elpa_allocate(3), elpa_set(3), and elpa_setup(3) must be called BEFORE elpa_hermitian_multiply can be called. SEE ALSO elpa2_print_kernels(1) elpa_init(3) elpa_allocate(3) elpa_set(3) elpa_setup(3) elpa_strerr(3) elpa_eigenvalues(3) elpa_eigenvectors(3) elpa_solve_tridiagonal(3) elpa_uninit(3) elpa_deallocate(3) ELPA Sat Jul 15 2017 elpa_hermitian_multiply(3)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO
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