Method and apparatus for determining an integer power of a float

Details Method and apparatus for determining an integer power of a float Method and apparatus for determining an integer power of a float

1996-01-30

1997-04-22

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Shift register

Particular input circuit

377 75, G11C 1900

Patent

active

056235275

ABSTRACT:
Apparatus for determining an integer power of a floating point number includes a shift register, a register file having a partial product register and a binary power register, a multiplier coupled to the register file for performing floating point multiply operations and a state machine for controlling the shift register, the register file and the multiplier. The state machine controls loading of initial values into the shift register and into the partial product register and the binary power register. The state machine controls execution of an integer power routine in which a new partial product value is determined by multiplying the contents of the partial product register by the contents of the binary power register if the LSB of the shift register is a 1. The partial product value is left unchanged if the LSB of the shift register is a 0. A new binary power value is determined by multiplying the contents of the binary power register by itself. Then the contents of the shift register are shifted one bit to the right, and the integer power routine is repeated until all bits in the shift register are 0's.

REFERENCES:
patent: 5195052 (1993-03-01), Karim
patent: 5197024 (1993-03-01), Pickett

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