GENSIZ: Compute the sizes of parameter vectors
In Auburngrads/SMRD: Statistical Methods For Reliability Data

Given model information compute nparm and npard giving the sizes of parameter vectors.

GENSIZ(
  kmod,
  kdist,
  kparv,
  nrvar,
  mrelat,
  nrelat,
  mnrvar,
  ncolx,
  kprint,
  nparm,
  npard,
  ier,
  nxd,
  intd,
  ipxcd,
  irelad,
  ilabp,
  ilabd,
  nregr,
  kgtall,
  llog,
  kmodp,
  npardm,
  nnum,
  kparm,
  iup,
  nterd,
  maxpd
)

`kmod`	Integer model code (see Details)
`kdist`	Integer code representing distribution number usually in 1-12. `kdist > 100`> signifies a user specified distribution.
`kparv`	Integer vector giving parameter numbers that have regression relationships.
`nrvar`	Integer vector. `nrvar[i]` gives the number of columns in the x-matrix that are in the relationship for the parameter specified in `kparv[i]`.
`mrelat`	Integer matrix with dimensions [mnrvar,nrelat] in which `mrelat[i,j]` gives the col of the x-matrix for the ith term of the jth relationship. `i = 1,nrvar[j], j = 1,nrelat` (see Details).
`nrelat`	Integer giving the number of regression relationships
`mnrvar`	Integer giving the number of columns in the x-matrix `mnrvar = max(nrvar)`.
`ncolx`	Integer giving the number of columns in the x-matrix. This does not include the required column of ones (we think of the ones as column zero).
`kprint`	Integer giving the print code for debugging output (see Details).
`nparm`	Integer giving the sum of the parameters in all of the regression relationships plus any model parameters that do not depend on explanatory variables.
`npard`	Integer giving the number of parameters in the distributional model (i.e., for a particular combination of the explanatory variables.
`ier`	Three-digit integer giving error codes upon return (see Details)
`nxd`	Integer vector (length = 5) giving the number of dimensions in the x-matrix for each relationship
`intd`	Integer vector (length = 5) giving the number of relationships with an intercept term
`ipxcd`	Integer vector (length = 5) giving the columns in the x-matrix that are involved with each relationship
`irelad`	Integer vector (length = 5) giving the number of things (don't know yet).
`ilabp`	Integer vector of parameter labels (length 8*nparm) in this new version we copy over to stack and pass pointers below.
`ilabd`	Integer vector of distribution parmameters (length 8*nparm) in this new version we copy over to stack and pass pointers below.

See Rcpp function genmax for more information on parameters than what is shown here.

kmod values:

0: Distribution kdist with one or more parameters related to explanatory variables.
1: Same as kmod = 0 with an lfp parameter.
2: Same as kmod = 0 with a doa parameter.
3: Steady-state model with distribution kdist plus exponential competing risk.
4: Proportional hazards model for distribution kdist plus explanatory variables for the power (or other) parameters.

Columns in the x-matrix may have a functional relationship with the location parameter, the scale parameter, or another model parameter. Each column in the matrix mrelat gives which columns in the x-matrix are related to a specific parameter. If all columns in the x-matrix are related to the location parameter only one column in mrelat will contain non-zero elements.

kprint values:

0: no printing at all
1: minimal printing
2: usual printing - no debugging
3: light debugging
4+: heavy debugging

ier error code values:

third digit:

0
No optimization errors detected

1
Likelihood shape caused problems with the powell alg

2
Convergence criterion not met after maximum number of iterations
second digit:

0
first derivatives of likelihood small

1
first derivatives of the loglikelihood too large
0
estimated fisher info matrix inverted successfully

1
estimated fisher info matrix appears to be singular