# INTERPOLATOR

controls the interpolation for the G-space term [Edit on GitHub]

Subsections

- CONV_INFO

## Keywords

- AINT_PRECOND

- EPS_R

- EPS_X

- MAX_ITER

- PRECOND

## Keyword descriptions

AINT_PRECOND: enum = SPL3_NOPBC_AINT1

  Usage: aint_precond copy

  Valid values:

  - `COPY`

  - `SPL3_NOPBC_AINT1`

  - `SPL3_NOPBC_PRECOND1`

  - `SPL3_NOPBC_AINT2`

  - `SPL3_NOPBC_PRECOND2`

  - `SPL3_NOPBC_PRECOND3`

  the approximate inverse to use to get the starting point for the linear solver of the spline3 methods [Edit on GitHub]

EPS_R: real = 1.00000000E-010

  Usage: eps_r 1.e-15

  accuracy on the residual for spline3 the interpolators [Edit on GitHub]

EPS_X: real = 1.00000000E-010

  Usage: eps_x 1.e-15

  accuracy on the solution for spline3 the interpolators [Edit on GitHub]

MAX_ITER: integer = 100

  Aliases: MAXITER

  Usage: max_iter 200

  the maximum number of iterations [Edit on GitHub]

PRECOND: enum = SPL3_NOPBC_PRECOND3

  Usage: precond copy

  Valid values:

  - `COPY`

  - `SPL3_NOPBC_AINT1`

  - `SPL3_NOPBC_PRECOND1`

  - `SPL3_NOPBC_AINT2`

  - `SPL3_NOPBC_PRECOND2`

  - `SPL3_NOPBC_PRECOND3`

  The preconditioner used for the linear solver of the spline3 methods [Edit on GitHub]