R version 4.0.0 (2020-04-24) -- "Arbor Day"
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>  # fields is a package for analysis of spatial data written for
>   # the R software environment .
>   # Copyright (C) 2018
>   # University Corporation for Atmospheric Research (UCAR)
>   # Contact: Douglas Nychka, nychka@ucar.edu,
>   # National Center for Atmospheric Research,
>   # PO Box 3000, Boulder, CO 80307-3000
>   #
>   # This program is free software; you can redistribute it and/or modify
>   # it under the terms of the GNU General Public License as published by
>   # the Free Software Foundation; either version 2 of the License, or
>   # (at your option) any later version.
>   # This program is distributed in the hope that it will be useful,
>   # but WITHOUT ANY WARRANTY; without even the implied warranty of
>   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>   # GNU General Public License for more details.
> 
> #library( fields, lib.loc="lib.test")
> 
> suppressMessages(library(fields))
> options(echo=FALSE)
Testing:  radial basis function exact
PASSED test at tolerance  1e-06
Testing:  sanity test of stationary.cov with RadialBasis
PASSED test at tolerance  1e-08
Testing:  sanity test of Rad.cov
PASSED test at tolerance  1e-08
Testing:  stat.cov Radbas C multiply
PASSED test at tolerance  1e-08
Testing:  Rad.cov C multiply
PASSED test at tolerance  1e-08
PASSED test at tolerance  1e-06
Testing:  Wendland exact
PASSED test at tolerance  1e-06
PASSED test at tolerance  1e-08
Testing:  Wendland C multiply
PASSED test at tolerance  1e-08
Testing:  Wendland.cov theta=1.0
PASSED test at tolerance  1e-07
Testing:  Wendland.cov theta=.75
PASSED test at tolerance  1e-07
Testing:  stationary.cov and exact C multiply for Wendland
PASSED test at tolerance  1e-08
Testing:    Wendland C multiply
PASSED test at tolerance  1e-08
Testing:  2-d derivs from wend.cov/mKrig
PASSED test at tolerance  1e-08
PASSED test at tolerance  1e-08
Testing:  2-d derivs from stationary-wend/mKrig
PASSED test at tolerance  1e-08
PASSED test at tolerance  1e-08
Testing:  wendland.cov quad 2-d
PASSED test at tolerance  0.005
Testing:  stationary.cov/Wendland cubic 2-d
PASSED test at tolerance  0.01
Warning: 
Grid searches over lambda (nugget and sill variances) with  minima at the endpoints: 
  (REML) Restricted maximum likelihood 
   minimum at  right endpoint  lambda  =  1.938365e-08 (eff. df= 380 )
Testing:  stationary.cov/Wendland cubic 2-d
PASSED test at tolerance  0.005
PASSED test at tolerance  0.005
Warning: 
Grid searches over lambda (nugget and sill variances) with  minima at the endpoints: 
  (GCV) Generalized Cross-Validation 
   minimum at  right endpoint  lambda  =  4.881835e-06 (eff. df= 380 )
Testing:  Tps derivative x1
PASSED test at tolerance  2e-04
Testing:  Tps derivative x2
PASSED test at tolerance  2e-04
done with dervative tests
> 
> 
> proc.time()
   user  system elapsed 
  1.520   0.263   1.737