Method and apparatus for extracting data stored in concatenated

Details Method and apparatus for extracting data stored in concatenated Method and apparatus for extracting data stored in concatenated

1997-10-30

2000-04-18

Teska, Kevin J.

395565, G06F 1202, G06F 716, G06F 1750

Patent

active

060525223

ABSTRACT:
A method for extracting n bits out of a data word stored in two concatenated registers each having a bit size of n bits starting with the m-th bit of the data register, m being smaller than n, comprises the following steps: The m significant bits of the first register are replaced with the m significant bits of the second register. Then, the result is stored in a register. Finally, the content of this register is rotated by m bits.

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"Multiprecision Barrel Shifter" IBM Technical Disclosure Bulletin, vol. 32, No. 9A, Feb. 1990, pp. 334-337.

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