60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/*****************************************************************************
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Copyright (c) 2017, 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 control NaN checking
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* Author: Intel Corporation
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*****************************************************************************/
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#include "lapacke_utils.h"
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static int nancheck_flag = -1;
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void LAPACKE_set_nancheck( int flag )
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{
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nancheck_flag = ( flag ) ? 1 : 0;
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}
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int LAPACKE_get_nancheck( void )
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{
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char* env;
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if ( nancheck_flag != -1 ) {
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return nancheck_flag;
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}
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/* Check environment variable, once and only once */
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env = getenv( "LAPACKE_NANCHECK" );
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if ( !env ) {
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/* By default, NaN checking is enabled */
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nancheck_flag = 1;
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} else {
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nancheck_flag = atoi( env ) ? 1 : 0;
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}
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return nancheck_flag;
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}
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