lapacke_cptcon.c

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* Contents: Native high-level C interface to LAPACK function cptcon
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_cptcon( lapack_int n, const float* d,
                           const lapack_complex_float* e, float anorm,
                           float* rcond )
{
    lapack_int info = 0;
    float* work = NULL;
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_s_nancheck( 1, &anorm, 1 ) ) {
            return -4;
        }
        if( LAPACKE_s_nancheck( n, d, 1 ) ) {
            return -2;
        }
        if( LAPACKE_c_nancheck( n-1, e, 1 ) ) {
            return -3;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_cptcon_work( n, d, e, anorm, rcond, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_cptcon", info );
    }
    return info;
}