lapacke_c_nancheck.c

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* Contents: Native C interface to LAPACK utility function
* Author: Intel Corporation
* Created in February, 2010
*****************************************************************************/
#include "lapacke_utils.h"

/* Check a vector for NaN entries. */

lapack_logical LAPACKE_c_nancheck( lapack_int n,
                                    const lapack_complex_float *x,
                                    lapack_int incx )
{
    lapack_int i, inc;

    if( incx == 0 ) return (lapack_logical) LAPACK_CISNAN( x[0] );
    inc = ( incx > 0 ) ? incx : -incx ;

    for( i = 0; i < n*inc; i+=inc ) {
        if( LAPACK_CISNAN( x[i] ) )
            return (lapack_logical) 1;
    }
    return (lapack_logical) 0;
}