cosmetic  
NB: sinpi() does not make sense, as tau in [-1,1] and sin(+/- pi/2) is exact.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1089 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
add log1pexp() {from my "paper"} and export

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1090 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
use our cospi2(), and more of tanpi(); TODO: in the future, rather R`s versions

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1091 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
minor commit towards pCopula() working with t copula for df=Inf

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1092 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
slight default changes in  copula/mvdc methods:  persp(*, ticktype) and contour(*, box01) -- considerably improved help pages

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1093 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
add "..." and use chk.s(...)  -- so Marius sees less .local(*)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1094 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
iTau() and iRho(): lower default tol to 1e-7 --> ~ 3 digits more accuracy


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1095 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
polylog(x, 2) now uses `gsl`s dilog()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1096 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- introducing purely numerical function .psiFrank() etc
- numerical accuracy improvements for
   psi(), rho(), tau()  for small |alpha|
- clear "FIXME" for remaining cases


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1097 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
bug fixed: pCopula() now works for a t copula with df=Inf

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1098 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- introducing purely numerical function .psiClayton() etc
- fix psi() and ipsi() for negative tau


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1099 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
internal rclaytonBivCopula() : 'alpha' as argument instead of 'copula'


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1100 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- frankBivCopula(): using 'alpha'..
- cosmetic


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1101 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
minor bugfix in ellipCopula();
nice new demo about the copula-GARCH approach

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1102 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
My vignette about the beautiful formula


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1103 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
numerical stable rho_{AMH} - as in the vignette

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1104 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- "provide" (hidden!) .AGumbel()
- use M&H's  psi() and iPsi()


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1105 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
nicer example plots


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1106 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
more info about  negative tau  (could do even more)


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1107 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
more tests; cosmetic

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1108 edb9625f-4e0d-4859-8d74-9fd3b1da38cb