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64 lines
2.9 KiB
64 lines
2.9 KiB
2 years ago
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/*****************************************************************************
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Copyright (c) 2014, Intel Corp.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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THE POSSIBILITY OF SUCH DAMAGE.
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******************************************************************************
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* Contents: Native C interface to LAPACK utility function
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* Author: Intel Corporation
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*****************************************************************************/
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#include "lapacke_utils.h"
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/* Check a matrix for NaN entries. */
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lapack_logical LAPACKE_zgb_nancheck( int matrix_layout, lapack_int m,
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lapack_int n, lapack_int kl,
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lapack_int ku,
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const lapack_complex_double *ab,
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lapack_int ldab )
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{
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lapack_int i, j;
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if( ab == NULL ) return (lapack_logical) 0;
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if( matrix_layout == LAPACK_COL_MAJOR ) {
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for( j = 0; j < n; j++ ) {
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for( i = MAX( ku-j, 0 ); i < MIN( m+ku-j, kl+ku+1 );
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i++ ) {
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if( LAPACK_ZISNAN( ab[i+(size_t)j*ldab] ) )
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return (lapack_logical) 1;
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}
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}
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} else if ( matrix_layout == LAPACK_ROW_MAJOR ) {
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for( j = 0; j < n; j++ ) {
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for( i = MAX( ku-j, 0 ); i < MIN( m+ku-j, kl+ku+1 ); i++ ) {
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if( LAPACK_ZISNAN( ab[(size_t)i*ldab+j] ) )
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return (lapack_logical) 1;
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}
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}
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}
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return (lapack_logical) 0;
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}
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