lapacke_zge_nancheck.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"
00018   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 #include "lapacke_utils.h"
00034 
00035 /* Check a matrix for NaN entries. */
00036 
00037 lapack_logical LAPACKE_zge_nancheck( int matrix_order, lapack_int m,
00038                                       lapack_int n,
00039                                       const lapack_complex_double *a,
00040                                       lapack_int lda )
00041 {
00042     lapack_int i, j;
00043 
00044     if( a == NULL ) return (lapack_logical) 0;
00045 
00046     if( matrix_order == LAPACK_COL_MAJOR ) {
00047         for( j = 0; j < n; j++ ) {
00048             for( i = 0; i < MIN( m, lda ); i++ ) {
00049                 if( LAPACK_ZISNAN( a[i+(size_t)j*lda] ) )
00050                     return (lapack_logical) 1;
00051             }
00052         }
00053     } else if ( matrix_order == LAPACK_ROW_MAJOR ) {
00054         for( i = 0; i < m; i++ ) {
00055             for( j = 0; j < MIN( n, lda ); j++ ) {
00056                 if( LAPACK_ZISNAN( a[(size_t)i*lda+j] ) )
00057                     return (lapack_logical) 1;
00058             }
00059         }
00060     }
00061     return (lapack_logical) 0;
00062 }


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