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Function Generator

  • US 20110055303A1
  • Filed: 03/15/2010
  • Published: 03/03/2011
  • Est. Priority Date: 09/03/2009
  • Status: Abandoned Application
First Claim
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1. A method for processing a main function in response to an argument having first and second components, the method comprising:

  • obtaining a first operand as a first sinusoidal function (sine) of the first component from a first lookup table;

    obtaining a second operand as a first sinusoidal function of the second component from a second lookup table;

    obtaining a third operand as a second sinusoidal function of the first component from the first lookup table;

    obtaining a fourth operand as a second sinusoidal function of the second component (b) from a third lookup table;

    performing a mirroring operation on the operands; and

    calculating the value of the main function using a pipelined multiply-accumulate (MAC) unit in response to the first, second, third and fourth operands, after performing the mirroring operation.

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