Description
Methods for calculating (usually) accurate numerical first and second order derivatives. Accurate calculations are done using 'Richardson''s' extrapolation or, when applicable, a complex step derivative is available. A simple difference method is also provided. Simple difference is (usually) less accurate but is much quicker than 'Richardson''s' extrapolation and provides a useful cross-check. Methods are provided for real scalar and vector valued functions.
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| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | NOTE |
| r-devel-linux-x86_64-debian-gcc | NOTE |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
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r-devel-linux-x86_64-debian-clang
CRAN incoming feasibility
Maintainer: ‘Paul Gilbert <pgilbert.ttv9z@ncf.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Paul",
family = "Gilbert",
role = c("aut", "cre"),
email = "pgilbert.ttv9z@ncf.ca"),
person(given = "Ravi",
family = "Varadhan",
role = "aut"))
as necessary.
NOTE
r-devel-linux-x86_64-debian-gcc
CRAN incoming feasibility
Maintainer: ‘Paul Gilbert <pgilbert.ttv9z@ncf.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Paul",
family = "Gilbert",
role = c("aut", "cre"),
email = "pgilbert.ttv9z@ncf.ca"),
person(given = "Ravi",
family = "Varadhan",
role = "aut"))
as necessary.
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NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
NOTE
r-devel-linux-x86_64-debian-clang
CRAN incoming feasibility
Maintainer: ‘Paul Gilbert <pgilbert.ttv9z@ncf.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Paul",
family = "Gilbert",
role = c("aut", "cre"),
email = "pgilbert.ttv9z@ncf.ca"),
person(given = "Ravi",
family = "Varadhan",
role = "aut"))
as necessary.
NOTE
r-devel-linux-x86_64-debian-gcc
CRAN incoming feasibility
Maintainer: ‘Paul Gilbert <pgilbert.ttv9z@ncf.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Paul",
family = "Gilbert",
role = c("aut", "cre"),
email = "pgilbert.ttv9z@ncf.ca"),
person(given = "Ravi",
family = "Varadhan",
role = "aut"))
as necessary.
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Version History
9 tracked
new
2016.8-1.1
Mar 10, 2026
new
2006.4-1
Apr 11, 2006