lapacke_ztf_trans.c
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00001 /*****************************************************************************
00002   Copyright (c) 2010, Intel Corp.
00003   All rights reserved.
00004 
00005   Redistribution and use in source and binary forms, with or without
00006   modification, are permitted provided that the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice,
00009       this list of conditions and the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright
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00012       documentation and/or other materials provided with the distribution.
00013     * Neither the name of Intel Corporation nor the names of its contributors
00014       may be used to endorse or promote products derived from this software
00015       without specific prior written permission.
00016 
00017   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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00020   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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00028 ******************************************************************************
00029 * Contents: Native C interface to LAPACK utility function
00030 * Author: Intel Corporation
00031 * Created in February, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke_utils.h"
00035 
00036 /* Converts input RFP matrix from row-major(C) to column-major(Fortran)
00037  * layout or vice versa.
00038  * This functions does copy diagonal for both unit and non-unit cases.
00039  */
00040 
00041 void LAPACKE_ztf_trans( int matrix_order, char transr, char uplo, char diag,
00042                         lapack_int n, const lapack_complex_double *in,
00043                         lapack_complex_double *out )
00044 {
00045     lapack_int row, col;
00046     lapack_logical rowmaj, ntr, lower, unit;
00047 
00048     if( in == NULL || out == NULL ) return ;
00049 
00050     rowmaj = (matrix_order == LAPACK_ROW_MAJOR);
00051     ntr    = LAPACKE_lsame( transr, 'n' );
00052     lower  = LAPACKE_lsame( uplo,   'l' );
00053     unit   = LAPACKE_lsame( diag,   'u' );
00054 
00055     if( ( !rowmaj && ( matrix_order != LAPACK_COL_MAJOR ) ) ||
00056         ( !ntr    && !LAPACKE_lsame( transr, 't' ) &&
00057                      !LAPACKE_lsame( transr, 'c' ) ) ||
00058         ( !lower  && !LAPACKE_lsame( uplo,   'u' ) ) ||
00059         ( !unit   && !LAPACKE_lsame( diag,   'n' ) ) ) {
00060         /* Just exit if input parameters are wrong */
00061         return;
00062     }
00063 
00064     /* Determine parameters of array representing RFP */
00065     if( ntr ) {
00066         if( n%2 == 0 ) {
00067             row = n + 1;
00068             col = n / 2;
00069         } else {
00070             row = n;
00071             col = (n + 1) / 2;
00072         }
00073     } else {
00074         if( n%2 == 0 ) {
00075             row = n / 2;
00076             col = n + 1;
00077         } else {
00078             row = (n + 1) / 2;
00079             col = n;
00080         }
00081     }
00082 
00083     /* Perform conversion: */
00084     if( rowmaj ) {
00085         LAPACKE_zge_trans( LAPACK_ROW_MAJOR, row, col, in, col, out, row );
00086     } else {
00087         LAPACKE_zge_trans( LAPACK_COL_MAJOR, row, col, in, row, out, col );
00088     }
00089 }


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autogenerated on Sat Jun 8 2019 18:55:56