Changes in version 2024-06-26                      

New Features

  - added function ddm() which permits formula-based fitting of the DDM
    using the analytic gradient.

Other Changes

  - the order of the arguments v and a to functions dfddm(), pfddm(),
    and the PDF derivatives d*_ddm() were changed. Previously, it was
    ...ddm(..., a, v, ...), and now it is ...ddm(..., v, a, ...)
  - character variables in med_dec transformed to factors.
  - updated example vignette by showing how to use the new ddm()
    function.

                      Changes in version 2022-3-15                      

New Features

  - Added new method to compute the PDF of the DDM

Bug Fixes

  - Fixed HTML deprecation in documentation

Other Changes

  - Changed the function parameters in dfddm() that determine how the
    method of calculation is chosen.

                     Changes in version 2021-12-10                      

Bug Fixes

  - Fixed 'pi' issue with Rcpp

                      Changes in version 2021-7-27                      

New Features

  - Added the function pfddm() to calculate the cumulative distribution
    function (CDF) of the DDM; it uses the same model parameters as the
    existing dfddm() function.

Bug Fixes

  - Fixed issue where the log optional parameter was ignored and the
    non-log result was produced.

                      Changes in version 2021-4-4                       

Bug Fixes

  - Fixed issue on Solaris involving floor function and the int data
    type.
  - Revamped handling of model parameters whose values are
    out-of-bounds.

                      Changes in version 2021-3-21                      

New Features

  - Added new parameter sigma to denote the diffusion coefficient of the
    Wiener process that underlies the DDM.

Bug Fixes

  - Corrected the required number of terms in the small-time
    approximation methods.
  - k now consistently refers to the number of individual terms instead
    of sometimes the number of pairs of terms.

Other Changes

  - Changed default value of max_terms_large to 1. This affects the
    default method (n_terms_small = "SWSE", scale = "both").
  - Revamped the error handling to make it less intrusive.
  - Removed function call in R; now directly calls C++.
  - Updated vignettes.

                     Changes in version 2020-11-03                      

Other Changes

  - Added warning about old 32-bit compilers exhibiting abnormal
    behavior for the large-time approximation.

                     Changes in version 2020-10-09                      

Bug Fixes

  - The num_funcs.cpp functions are now prevented from possible
    overflow.
  - Checks are now in place for empty strings as inputs to the
    parameters n_terms_small, summation_small, and scale.

                     Changes in version 2020-10-07                      

New Features

  - New default method, callable using the arguments n_terms_small =
    "SWSE", scale = "both".

Bug Fixes

  - Density functions now return strictly non-negative values.

Other Changes

  - If input response times is an empty vector, then an empty vector is
    returned.
  - Fine-tuned the summation functions used with the SWSE method
  - Added URLs to DESCRIPTION

                     Changes in version 2020-07-10                      

Initial CRAN release.