READC_f

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Contents

• Description
• Parameters
• Default properties
• Interfacing function
• Computational function

Description

This block allows user to read data in a C file. Output record selection and Time record Selection allows the user to select data among file records. Each call to the block advance one record in the file.

Parameters

• Time record selection

  an empty matrix or a positive integer.

  If an integer i is given the i th element of the read record is assumed to be the date of the output event.

  If empty no output event exists.

  Properties : Type 'vec' of size -1

• Outputs record selection

  a vector of positive integer.

  [k₁...k_n] : The k_i^th element of the read record gives the value of the i^th output.

  Properties : Type 'vec' of size -1

• Input file name

  a character string defining the path of the file.

  Properties : Type 'str' of size 1

• Input Format

  a character string defining the format to use.

  Properties : Type 'str' of size 1

• Record size

  The file is supposed to be formed by a sequence of data with same format.

  These data are organized in a sequence of record each of them containing Record size data.

  Properties : Type 'vec' of size 1

• Buffer size

  To improve efficiency it is possible to buffer the input data. Read on the file is only done after each Buffer size call to the block.

  Properties : Type 'vec' of size 1

• Initial record index

  a scalar. This fixes the first record of the file to use.

  Properties : Type 'vec' of size 1

• Swap mode 0/1

  WithSwap mode=1 the file is supposed to be coded in "little endian IEEE format" and data are swaped if necessary to match the IEEE format of the processor. IfSwap mode=0 then automatic bytes swap is disabled.

  Properties : Type 'vec' of size 1

Default properties

• always active: no

• direct-feedthrough: no

• zero-crossing: no

• mode: no

• regular outputs:

  - port 1 : size [1,1] / type 1

• number/sizes of activation inputs: 1

• number/sizes of activation outputs: 0

• continuous-time state: no

• discrete-time state: yes

• object discrete-time state: no

• name of computational function: readc

Interfacing function

• SCI/modules/scicos_blocks/macros/Sources/READC_f.sci

Computational function

• SCI/modules/scicos_blocks/src/c/readc.c (Type 2)