Data processing system incorporating a logical compare instructi

Details Data processing system incorporating a logical compare instructi Data processing system incorporating a logical compare instructi

1973-12-13

1978-01-10

Boudreau, Leo H.

Boots, shoes, and leggings

G06F 300

Patent

active

040682994

ABSTRACT:
An apparatus for utilizing a logical compare instruction is disclosed. The apparatus develops a data field descriptor associated with and describing the attributes of each of the operands of the compare instruction. If the operands have different formats, when matching the contents of a first operand to the contents of a second operand, one operand is converted at execution time of the compare instruction to a format consistent with the other operand. The apparatus determines whether the contents of the first operand is greater than, less than, or equal to the second operand.

REFERENCES:
patent: 3680058 (1972-07-01), DeSantis et al.
patent: 3805247 (1974-04-01), Zucker et al.

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