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/* Computation of Gerschgorin interval for symmetric, tridiagonal matrix */

#ifndef _GERSCHGORIN_H_
#define _GERSCHGORIN_H_

////////////////////////////////////////////////////////////////////////////////
//! Compute Gerschgorin interval for symmetric, tridiagonal matrix
//! @param  d  diagonal elements
//! @param  s  superdiagonal elements
//! @param  n  size of matrix
//! @param  lg  lower limit of Gerschgorin interval
//! @param  ug  upper limit of Gerschgorin interval
////////////////////////////////////////////////////////////////////////////////
extern "C" void computeGerschgorin(float *d, float *s, unsigned int n,
                                   float &lg, float &ug);

#endif  // #ifndef _GERSCHGORIN_H_
