def lu_solve(lu_and_piv, b, trans=0, overwrite_b=False, check_finite=True):
 (lu, piv) = lu_and_piv
 if check_finite:
  b1 = asarray_chkfinite(b)
 else:
  b1 = asarray(b)
 overwrite_b = (overwrite_b or _datacopied(b1, b))
 if (lu.shape[0] != b1.shape[0]):
  raise ValueError('incompatible dimensions.')
 (getrs,) = get_lapack_funcs(('getrs',), (lu, b1))
 (x, info) = getrs(lu, piv, b1, trans=trans, overwrite_b=overwrite_b)
 if (info == 0):
  return x
 raise ValueError(('illegal value in %d-th argument of internal gesv|posv' % (- info)))

def lu_solve ( lu_and_piv , b , trans = 0 , overwrite_b = False , check_finite = True ) : ( lu , piv ) = lu_and_piv if check_finite : b1 = asarray_chkfinite ( b ) else : b1 = asarray ( b ) overwrite_b = ( overwrite_b or _datacopied ( b1 , b ) ) if ( lu . shape [ 0 ] != b1 . shape [ 0 ] ) : raise ValueError ( 'incompatible dimensions.' ) ( getrs , ) = get_lapack_funcs ( ( 'getrs' , ) , ( lu , b1 ) ) ( x , info ) = getrs ( lu , piv , b1 , trans = trans , overwrite_b = overwrite_b ) if ( info == 0 ) : return x raise ValueError ( ( 'illegal value in %d-th argument of internal gesv|posv' % ( - info ) ) )
solve an equation system .