APPARATUS AND METHOD FOR SUPPORTING A CONVERSION INSTRUCTION

APPARATUS AND METHOD FOR SUPPORTING A CONVERSION INSTRUCTION

A data processing system 2 includes instruction decoder circuitry 12 responsive to a conversion instruction FCVTJS to convert a double precision floating point number into a 32-bit integer number. Right shifting circuitry 28 performs a right shift upon at least part of the input number and left shif...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LUTZ David Raymond, BURGESS Neil, GOVEAS Kelvin Domnic
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A data processing system 2 includes instruction decoder circuitry 12 responsive to a conversion instruction FCVTJS to convert a double precision floating point number into a 32-bit integer number. Right shifting circuitry 28 performs a right shift upon at least part of the input number and left shifting circuitry 32 performs a left shift of at least part of the input number. Selection circuitry 38 serves to select one of the right shifted number and the left shifted number as a selected shifted number which forms at least part of the output number which is generated.