Campbell-scientific CR800 and CR850 Measurement and Control Systems Manual de usuario descargar pdf (Pagina 473)

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Appendix A. CRBasic Programming Instructions

473

CRBasicExample69. UsingBit‐ShiftOperators

Dim input_val As Long

Dim value_1 As Long

Dim value_2 As Long

Dim value_3 As Long

'read input_val somehow

value_1 = (input_val AND &B11000000) >> 6

value_2 = (input_val AND &B00110000) >> 4

'note that value_3 does not need to be shifted

value_3 = (input_val AND &B00001111)

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A.6.5 Logical Operators

AND

Performsalogicalconjunctionontwoexpressions.

Syntax

result = expr1 AND expr2

EQV

Performsalogicalequivalenceontwoexpressions.

Syntax

result = expr1 EQV expr2

NOT

Performsalogicalnegationonanexpression.

Syntax

result = NOT expression

OR

Performsalogicaldisjunctionontwoexpressions.

Syntax

result = expr1 OR expr2

XOR

Performsalogicalexclusionontwoexpressions.

Syntax

result = expr1 XOR expr2

IIF

Evaluatesavariableorexpressionandreturnsoneoftworesultsbasedonthe

outcomeofthatevaluation.

Syntax

Result = IIF (Expression, TrueValue, FalseValue)

IMP

Performsalogicalimplicationontwoexpressions.

Syntax

result = expression1 IMP expression2

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