1.0.0 (June-2025)

• Minor changes
  • Renamed several modules and moved functions and subroutines for better file organization.
  • Removed 00_specfun module; migrated trigamma and psi to 00_lib_utils. Other functions in 00_specfun are no longer necessary. The COPYRIGHTS and DESCRIPTION files have been updated to reflect the changes.
  • Consolidated 03_barfima, 03_karfima, 03_garfima, and 03_uwarfima into a single module named 05_generic.
  • Simplified the internal structure of the link.btsr function.
• Major Changes
  • Rewrote and renamed 01_RNG to 01_distrib.f90, now using R’s native rand_unif, rbeta, dbeta, rgamma, and dgamma. The COPYRIGHTS and DESCRIPTION files have been updated to reflect these changes.
  • Modified subroutines in 02_base to support time-varying nu.
  • Added input validation and variable conversion functions for backward compatibility.
  • The btsr.sim, btsr.extract, and btsr.fit functions have been updated to support the new models. Regression models can now be easily fitted using these functions.
  • Fixed parameter initialization typo:
    Old: sigma2 <- sum(er^2)/((n1 - k) * (dlink)^2)
    New: sigma2 <- sum(er^2/((n1 - k) * (dlink)^2))
  • Changed the initialization of xreg from zero to the mean of the first p observations.
  • Added a robust covariance calculation method that falls back to the outer product of gradients if Hessian calculation fails.

0.1.5 (2023-09-23)

• Minor Revision

• Added the “_PACKAGE” special sentinel to fix the problem related to the fact that @docType package no longer automatically adds a -package alias.

• Temporary disabled all subroutines that use integer(kind=8) (file 01_RNG.f90).

• Fixed the ``not yet implemented: derived type components with non default lower bounds’’ message due to mag01 component in 01_RNG.f90 file and changed subroutines that use this component accordingly.

0.1.4 (2023-01-19)

• Minor fix

• We fixed some typos in src/BTSR_init.c and added the information about this file to src/Makevars (this was missing in the last version)

• Internal subroutines to simulate, extract and fit models were modified, but this caused no change in the results from previous versions. This change was done since using a construction such as ‘foo <- .check.model(model[1], “extract”)’ and then ‘.Fortran(foo,…)’ gives an error during the registration process. Therefore, we created auxiliary functions for each model.

• We have fixed a typo in the FORTRAN subroutine used to predict BARC models. This should fix the memory allocation problem found in the last version.

0.1.3 (2023-01-10)

• Minor fix

• We have added the file src/BTSR_init.c

0.1.2 (2022-11-16)

• Minor fix

• 00_lb.f90 was merged with 00_lbfgsb.f90

• We have added more information to src/Makevars in order to setup dependencies for parallel make.

0.1.1 (2022-11-10)

• Minor fix

• We have added explicit dependencies to src/Makevars to tell make the constraints on the order of compilation.

0.1.0

• First version

• Submission date: 2022-11-07