diff --git a/var/spack/repos/builtin/packages/r-fpcompare/package.py b/var/spack/repos/builtin/packages/r-fpcompare/package.py
new file mode 100644
index 0000000000..95f96fcacc
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+++ b/var/spack/repos/builtin/packages/r-fpcompare/package.py
@@ -0,0 +1,29 @@
+# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class RFpcompare(RPackage):
+    """Reliable Comparison of Floating Point Numbers
+
+    Comparisons of floating point numbers are problematic due to errors
+    associated with the binary representation of decimal numbers. Despite
+    being aware of these problems, people still use numerical methods
+    that fail to account for these and other rounding errors (this pitfall
+    is the first to be highlighted in Circle 1 of Burns (2012) 'The R
+    Inferno' <http://www.burns-stat.com/pages/Tutor/R_inferno.pdf>). This
+    package provides new relational operators useful for performing
+    floating point number comparisons with a set tolerance."""
+
+    homepage = "https://github.com/PredictiveEcology/fpCompare"
+    url      = "https://cloud.r-project.org/src/contrib/fpCompare_0.2.3.tar.gz"
+    list_url = "https://cloud.r-project.org/src/contrib/Archive/fpCompare"
+
+    maintainers = ['dorton21']
+
+    version('0.2.3', sha256='f89be3568544a3a44e4f01b5050ed03705805308ec1aa4add9a5e1b5b328dbdf')
+
+    depends_on('r@3.3:', type=('build', 'run'))