Teledyne-lecroy User-Defined Decoding (UDD) Advanced Script Langua Instrukcja Użytkownika Pobierz pdf (Strona 22)

CURPOS

Remark

This function returns the current position of the cursor in bits of INPUTDATA.

At first, CURPOS is zero and increases one field’s length in each AddField call.

CURPOS has a local scope in script, that is, in each SubFieldOf statement, CURPOS has a local

scope, too. In each SubFieldOf statement, CURPOS is set to zero and increases one subfield

length. When it returns out of subfield statement, CURPOS value is set to the value that it had

before SubFieldof statement.

Example

F1 = AddField(0, 8, “F1”, “F1”, “F1”);

F2 = AddField(CURPOS, 8, “F2”, “F2”, “F2”);

/* CURPOS is equal to 8 and will be 16 after this statement. */

SubFieldOf(F2)

{

F11 = AddField(0, 2, “F11”, “F11”, “F11”) ;

F12 = AddField(CURPOS, 2, “F12”, “F12”, “F12”) ; /* CURPPOS = 2 */

F13 = AddField(CURPOS, 4, “F13”, “F13”, “F13”) ; /* CURPPOS = 4 */

}

F3 = AddField(CURPOS, 2, “F3”, “F3”, “F3”); /* CURPPOS = 16 */

EOD

Remark

If CURPOS is at the end of data, this function returns TRUE. If not, returns FALSE. That is, if all

input data has been decoded, this function returns TRUE.

INPUTDATA

Remark

INPUTDATA is a symbolic representation of the entire data stream that is passed to the decoder.

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Teledyne-lecroy User-Defined Decoding (UDD) Advanced Script Langua Instrukcja Użytkownika Strona 22