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#
# fields is a package for analysis of spatial data written for
# the R software environment.
# Copyright (C) 2024 Colorado School of Mines
# 1500 Illinois St., Golden, CO 80401
# Contact: Douglas Nychka, douglasnychka@gmail.com,
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with the R software environment if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# or see http://www.r-project.org/Licenses/GPL-2
##END HEADER
test.for.zero <- function(xtest, xtrue, tol = 1e-08,
relative = TRUE, tag = NULL) {
denom <- ifelse(relative, mean(abs(c(xtrue))), 1)
test.value <- sum(abs(c(xtest) - c(xtrue)))/denom
if (!is.null(tag)) {
cat("Testing: ", tag, fill = TRUE)
}
if (test.value < tol) {
cat("PASSED test at tolerance ", tol, fill = TRUE)
}
else {
cat("FAILED test value = ", test.value, " at tolerance ",
tol)
# generate an "error" to signal failed test
if (exists("test.for.zero.flag")) {
stop()
}
}
}
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