sci_struct

Scicos block structure of a scilab computational function

Contents

• sci_struct - Scicos block structure of a scilab computational function +

  • Module
  • Description
  • Inputs/outputs
  • Events
  • Parameters
  • States
  • Zero crossing surfaces and modes
  • Miscallaneous

Module

• xcos

Description

A Scicos computational function of type 5 can be realized by the use of a Scilab function. That function does not really differs from all other scilab function : one can use all functions and instructions of the scilab language inside that function to do the computation.

Such a function must be written in a file with extension .sci, must be loaded inside scilab by the common loading scilab function (, , , ,...) and must have two right hand side arguments and one left hand side argument, as the following calling sequence :

When the simulator is calling such a computational function, it build a scilab structure (in the previous exemple this is the named rhs/lhs arguments) from his own internal C reprensation of a block structure (see for more details about the C structure of scicos blocks).

That scilab structure is a scilab typed list variable that have the following fields :

Each fields are then accessible inside the scilab computational function by the use of :

Inputs/outputs

• block.nin : a scalar that gives the number of regular input ports. This is a read only data.

• block.insz : a vector of size , that gives the dimensions and types of the regular input ports.

  • : are the first dimensions.
  • : are the second dimensions.
  • : are the type of data (C coding).

  This is a read only data.

• block.inptr : a list of size that enclosed typed matrices for regular input ports. Each element correspond to only one regular input port. Then i-th matrix of the block.inptr list will have the dimensions [ , ] and the type . The data type that can be provided by regular input ports are :

  • 1: matrix of real numbers,
  • 2: matrix of complex numbers,
  • 3: matrix of int32 numbers,
  • 4: matrix of int16 numbers,
  • 5: matrix of int8 numbers,
  • 6: matrix of uint32 numbers,
  • 7: matrix of uint16 numbers,
  • 8: matrix of uint8 numbers.

  This is a read only data.

• block.nout : a scalar that gives the number of regular output ports. This is a read only data.

• block.outsz : a vector of size , that gives the dimensions and types of the regular output ports.

  • : are the first dimensions.
  • : are the second dimensions.
  • : are the type of data (C coding).

  This is a read only data.

• block.outptr : a list of size that enclosed typed matrices for regular output ports. Each element correspond to only one regular output port. Then i-th matrix of the block.outptr list will have the dimensions [ , ] and the type . The data type that can be provided by regular output ports are :

  • 1: matrix of real numbers,
  • 2: matrix of complex numbers,
  • 3: matrix of int32 numbers,
  • 4: matrix of int16 numbers,
  • 5: matrix of int8 numbers,
  • 6: matrix of uint32 numbers,
  • 7: matrix of uint16 numbers,
  • 8: matrix of uint8 numbers.

  Values of regular output ports will be saved in the`Cstructure`_ of the block only for =6 and =1.

Events

• block.nevprt : a scalar given the event input port number (binary coding) which have activated the block. This is a read only data.
• block.nevout : a scalar given the number of output event port of the block. This is a read only data.
• block.evout : a vector of size corresponding to the register of output event. Values of output event register will be saved in the`C structure`_ of the block only for =3.

Arguments

• block.nrpar : a scalar given the number of real parameters. This is a read only data.
• block.rpar : a vector of size corresponding to the real parameter register. This is a read only data.
• block.nipar : a scalar given the number of integer parameters. This is a read only data.
• block.ipar : a vector of size correspondig to the integer parameter register. This is a read only data.
• block.nopar : a scalar given the number of object parameters. This is a read only data.
• block.oparsz : a matrix of size , that respectively gives the first and the second dimension of object parameters. This is a read only data.
• block.opartyp : a vector of size given the C coding type of data. This is a read only data.
• block.opar : a list of size given the values of object parameters. Each element of can be either a typed matrix or a list. Only matrix that encloses numbers of type real, complex, int32, int16, int8, uint32, uint16 and uint8 are allowed, all other types of scilab data will be enclosed in a sub-list. This is a read only data.

States

• block.nz : a scalar given the number of discrete state for the block. This is a read only data.
• block.z : a vector of size corresponding to the discrete state register. Values of discrete state register will be saved in the`C structure`_ of the block only for =4, =6, =2 and =5.
• block.noz : a scalar that gives the number of discrete object state. This is a read only data.
• block.ozsz : a matrix of size , that respectively gives the first and the second dimension of discrete object state. This is a read only data.
• block.oztyp : a vector of size given the C coding type of data.
• block.oz : a list of size given the values of discrete object states. Each element of can be either a typed matrix or a list. Only matrix that encloses numbers of type real, complex, int32, int16, int8, uint32, uint16 and uint8 are allowed, all other types of scilab data will be enclosed in a sub-list. Values of discrete object state will be saved in the`C structure`_ of the block only for =4, =6, =2 and =5.
• block.nx : a scalar given the number of continuous state for the block. This is a read only data.
• block.x : a vector of size given the value of the continuous state register. Values of the continuous state register will be saved in the`C structure`_ of the block only for =4, =6 and =2.
• block.xd : a vector of size given the value of the derivative continuous state register. Values of the derivative continuous state register will be saved in the`C structure`_ of the block only for =4, =6, =0 and =2.
• block.res : a vector of size corresponding to the Differential Algebraic Equation (DAE) residual. Values of that register will be saved in the`C structure`_ of the block only for =0, and =10.

Zero crossing surfaces and modes

• block.ng : a scalar given the number of zero crossing surfaces for the block. This is a read only data.
• block.g : a vector of size corresponding to the zero crossing register. Values of that register will be saved in the`C structure`_ of the block only for =9.
• block.nmode : a scalar given the number of mode for the block. This is a read only data.
• block.mode : a vector of size that corresponds to the mode register. Values of that register will be saved in the`C structure`_ of the block only for =9, with =1.

Miscallaneous

• block.type : a scalar given the type of the block. This is a read only data.
• block.label : a string given the label of the block. This is a read only data.