90 lines
3.8 KiB
C
90 lines
3.8 KiB
C
/*****************************************************************************
|
|
Copyright (c) 2010, Intel Corp.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
* Neither the name of Intel Corporation nor the names of its contributors
|
|
may be used to endorse or promote products derived from this software
|
|
without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
THE POSSIBILITY OF SUCH DAMAGE.
|
|
******************************************************************************
|
|
* Contents: Native C interface to LAPACK utility function
|
|
* Author: Intel Corporation
|
|
* Created in February, 2010
|
|
*****************************************************************************/
|
|
|
|
#include "lapacke_utils.h"
|
|
|
|
/* Converts input triangular banded matrix from row-major(C) to
|
|
* column-major(Fortran) layout or vice versa.
|
|
*/
|
|
|
|
void LAPACKE_dtb_trans( int matrix_order, char uplo, char diag,
|
|
lapack_int n, lapack_int kd,
|
|
const double *in, lapack_int ldin,
|
|
double *out, lapack_int ldout )
|
|
{
|
|
lapack_logical colmaj, upper, unit;
|
|
|
|
if( in == NULL || out == NULL ) return;
|
|
|
|
colmaj = ( matrix_order == LAPACK_COL_MAJOR );
|
|
upper = LAPACKE_lsame( uplo, 'u' );
|
|
unit = LAPACKE_lsame( diag, 'u' );
|
|
|
|
if( ( !colmaj && ( matrix_order != LAPACK_ROW_MAJOR ) ) ||
|
|
( !upper && !LAPACKE_lsame( uplo, 'l' ) ) ||
|
|
( !unit && !LAPACKE_lsame( diag, 'n' ) ) ) {
|
|
/* Just exit if any of input parameters are wrong */
|
|
return;
|
|
}
|
|
|
|
if( unit ) {
|
|
/* Unit case, diagonal excluded from transposition */
|
|
if( colmaj ) {
|
|
if( upper ) {
|
|
LAPACKE_dgb_trans( matrix_order, n-1, n-1, 0, kd-1,
|
|
&in[ldin], ldin, &out[1], ldout );
|
|
} else {
|
|
LAPACKE_dgb_trans( matrix_order, n-1, n-1, kd-1, 0,
|
|
&in[1], ldin, &out[ldout], ldout );
|
|
}
|
|
} else {
|
|
if( upper ) {
|
|
LAPACKE_dgb_trans( matrix_order, n-1, n-1, 0, kd-1,
|
|
&in[1], ldin, &out[ldout], ldout );
|
|
} else {
|
|
LAPACKE_dgb_trans( matrix_order, n-1, n-1, kd-1, 0,
|
|
&in[ldin], ldin, &out[1], ldout );
|
|
}
|
|
}
|
|
} else {
|
|
/* Non-unit case */
|
|
if( upper ) {
|
|
LAPACKE_dgb_trans( matrix_order, n, n, 0, kd, in, ldin, out,
|
|
ldout );
|
|
} else {
|
|
LAPACKE_dgb_trans( matrix_order, n, n, kd, 0, in, ldin, out,
|
|
ldout );
|
|
}
|
|
}
|
|
}
|