Fast branch-free vector division computation

Fast branch-free vector division computation

Methods and apparatus for double precision division/inversion vector computations on Single Instruction Multiple Data (SIMD) computing platforms are described. In one embodiment, an input argument is represented by an exponent portion and a fraction portion. The fraction portions are scaled, inverte...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KURIAKIN, VALERY FEDOROVICH, GUSEVA, MARIA VALERIEVNA, KOLESOV, ANDREY IVANOVICH
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:Methods and apparatus for double precision division/inversion vector computations on Single Instruction Multiple Data (SIMD) computing platforms are described. In one embodiment, an input argument is represented by an exponent portion and a fraction portion. The fraction portions are scaled, inverted, and multiplied to generate an inverse version of the input argument. In an embodiment, the inversion of the exponent portion may be done by changing the sign of the exponent. Other embodiments are also described.