# scicos_sim

Define a sim structure

### sim

Static arrays coming from the result of the compilation. That arrays does not evolve during the simulation.

These information are used both by the simulator and the code generator.

Type : scilab tlist of type `"scs"`

with fields :
funs,
xptr,
zptr,
ozptr,
zcptr,
inpptr,
outptr,
inplnk,
outlnk,
rpar,
rpptr,
ipar,
ipptr,
opar,
opptr,
clkptr,
ordptr,
execlk,
ordclk,
cord,
oord,
zord,
critev,
nb,
ztyp,
nblk,
ndcblk,
subscr,
funtyp,
iord,
labels,
modptr and
uids.

#### funs

A list containing names of the computational functions or scilab functions.

Size : number of blocks.

Type : list of strings and/or scilab function.

#### xptr

A vector pointer to the continuous time state register `x`

. The continuous-time state of block `i`

is `state.x(sim.xptr(i):sim.xptr(i+1)-1)`

.

Size : number of blocks + 1.

Type : column vector of integers.

#### zptr

A vector pointer to the discrete time state register `z`

. The discrete-time state of block `i`

is `state.z(sim.zptr(i):sim.zptr(i+1)-1)`

.

Size : number of blocks + 1.

Type : column vector of integers.

#### ozptr

A vector pointer to the object discrete state register oz. The object discrete state of block `i`

is `state.oz(sim.ozptr(i):sim.ozptr(i+1)-1)`

.

Size : number of blocks + 1.

Type : column vector of integers.

#### zcptr

A vector pointer to the zero-crossing surfaces register. That vector gives by block the used number of the zero-crossing.

Size : number of blocks + 1.

Type : column vector of integers.

#### inpptr

`(sim.inpptr(i+1)-sim.inpptr(i))`

gives the number of regular input ports of the `i`

block.

`inpptr(i)`

points to the beginning of `i`

th block inputs within the indirection table `inplnk`

.

Size : number of blocks + 1.

Type : column vector of integers.

#### outptr

`(sim.outptr(i+1)-sim.outptr(i))`

gives the number of regular output ports of the `i`

block.

`outptr(i)`

points to the beginning of `i`

th block outputs within the indirection table `outlnk`

.

Size : number of blocks + 1.

Type : column vector of integers.

#### inplnk

`(cpr.sim.inplnk(cpr.sim.inpptr(i)-1+j))`

is the index of the link connected to the `j`

th input port of the `i`

th block where `j`

goes from `1`

to `(cpr.sim.inpptr(i+1)-cpr.sim.inpptr(i))`

.

Size : total number of regular input port.

Type : column vector of integers.

#### outlnk

`(cpr.sim.outlnk(cpr.sim.outptr(i)-1+j))`

is the index of the link connected to the `j`

th output port of the `i`

th block where `j`

goes from `1`

to `(cpr.sim.outptr(i+1)-cpr.sim.outptr(i))`

.

Size : total number of regular output port.

Type : column vector of integers.

#### rpar

Vector of real parameters that is obtained by concatenating the real parameters registers of all the blocks.

Size : total number of real parameters.

Type : column vector of real numbers.

#### rpptr

A vector pointer to the real parameters register `rpar`

. The real parameters of block `i`

are `sim.rpar(sim.rpptr(i):sim.rpptr(i+1)-1)`

.

Size : number of blocks + 1.

Type : column vector of integer.

#### ipar

Vector of integer parameters that is obtained by concatenating the integer parameters registers of all the blocks.

Size : total number of integer parameters.

Type : column vector of integer.

#### ipptr

A vector pointer to the integer parameters register `ipar`

. The integer parameters of block `i`

are `sim.ipar(sim.ipptr(i):sim.ipptr(i+1)-1)`

.

Size : number of blocks + 1.

Type : column vector of real numbers.

#### opar

List of object parameters that is obtained by concatenating the list of object parameters of all the blocks.

Size : total number of object parameters.

Type : list of scilab objects.

#### opptr

A vector pointer to the object parameters list `opar`

. The object parameters of block `i`

are `sim.opar(sim.opptr(i):sim.opptr(i+1)-1)`

.

Size : number of blocks + 1.

Type : column vector of integers.

#### clkptr

A vector pointer to output activation ports.

`(cpr.sim.clkptr(i):cpr.sim.clkptr(i+1)-1)`

gives the number of output event ports of the block `i`

.

Size : number of blocks + 1.

Type : column vector of integers.

#### ordptr

A vector pointer to `ordclk`

designating the part of ordclk corresponding to a given activation.

`(cpr.sim.ordptr(i):cpr.sim.ordptr(i+1)-1)`

points to the region within `ordclk`

indicates the number of blocks activated by the output event ports numbered `i`

.

Size : number of sources of activation + 1.

Type : column vector of integers.

#### execlk

Unused.

Size : - Type : matrix of real.

#### ordclk

A matrix associated to blocks activated by output activation ports. The first column contains the block number, and the second, the event code by which the block should be called.

Size : total number of blocks summed by source of activations.

Type : matrix of integers.

#### cord

A matrix associated to always active blocks.

The first column contains the block number, and the second, the event code by which the block should be called.

Size : `ncord`

.

Type : matrix of integers.

#### oord

Subset of `cord`

. Blocks of that matrix have outputs which affect computation of continuous state derivatives.

Size : `noord`

.

Type : matrix of integers.

#### zord

Subset of `oord`

. Blocks of that matrix have outputs which affect computation of zero-crossing surfaces.

Size : `nzord`

.

Type : matrix of integers.

#### critev

A vector of size equal to the number of activations and containing zeros and ones. The value `1`

indicates that the activation is critical in the sense that the continuous-time solver must be cold restarted.

Size : number of source of activation.

Type : column vector of integers.

#### nb

Number of blocks. Note that the number of blocks may differ from the original number of blocks in the diagram because c_pass2 may duplicate some conditional blocks.

Size : 1.

Type : integer.

#### ztyp

A vector of size equal to the number of blocks.

A `1`

entry indicates that the block may have zero-crossings, even if it does not in the context of the diagram. Usually not used by the simulator.

Size : number of blocks.

Type : column vector of integers.

#### nblk

Not used. Set to `nb`

.

Size : 1 Type : integer.

#### ndcblk

Not used.

Size : - Type : integer.

#### subscr

Not used.

Size : 0

Type : empty real.

#### funtyp

A vector of size equal to the number of blocks indicating the type of the computational function of the block. Block type can be `0`

through `5`

.

Currently only type `4`

(C language) and type `5`

(Scilab language) computational functions should be used. But older blocks can also be used.

Size : number of blocks.

Type : column vector of integer.

#### iord

A matrix associated to blocks that must be activated at the start of the simulation. This includes blocks inheriting from constant blocks and always active blocks.

Size : `niord`

.

Type : matrix of integers.

#### labels

A string vector of size equal to the number of blocks containing block labels.

Size : numbers of blocks.

Type : column vector of strings.

#### modptr

A vector pointer to the block modes.

Size : number of blocks + 1.

Type : column vector of integer.

#### uids

A string vector of size equal to the number of blocks containing block UIDs (each value is a unique block identifier).

Size : numbers of blocks.

Type : column vector of strings.

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