Boolean expressions (original) (raw)

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summary

This subchapter looks at Boolean expressions.

stub section

This subchapter is a stub section. It will be filled in with instructional material later. For now it serves the purpose of a place holder for the order of instruction.

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Boolean expressions

This subchapter looks at Boolean expressions.

The following material is from the unclassified Computer Programming Manual for the JOVIAL (J73) Language, RADC-TR-81-143, Final Technical Report of June 1981.

The JOVIAL operators are summarized in the following table: Type Operators Operation Logical NOT (prefix) "not"
AND OR "and", "or"
XOR EQV "exclusive or", "equivalent" A relational operator compares any two values of the same type
and produces a Boolean value as its result. A logical operator
takes bit-string values and also produces a Boolean result. (A
Boolean value is a one-bit bit-string, representing "true" or
"false", depending on whether it is one or zero.) The JOVIAL operators are described in detail in Chapter 11,
where, for example, you will find the rules for operations on
fixed values and for the comparison of such objects as
character-strings and pointers.

Chapter 1 Introduction, page 8

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