US 11,853,718 B2
Small multiplier after initial approximation for operations with increasing precision
Leonard Rarick, San Diego, CA (US)
Assigned to Imagination Technologies Limited, Kings Langley (GB)
Filed by Imagination Technologies Limited, Kings Langley (GB)
Filed on Jan. 16, 2023, as Appl. No. 18/097,316.
Application 17/209,809 is a division of application No. 14/516,643, filed on Oct. 17, 2014, granted, now 10,983,756, issued on Apr. 20, 2021.
Application 18/097,316 is a continuation of application No. 17/209,809, filed on Mar. 23, 2021, granted, now 11,579,844.
Prior Publication US 2023/0214186 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 7/552 (2006.01); G06F 7/523 (2006.01); G06F 7/537 (2006.01)
CPC G06F 7/552 (2013.01) [G06F 7/523 (2013.01); G06F 7/537 (2013.01); G06F 7/5525 (2013.01); G06F 2207/5351 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of evaluating an output value of a function at an input value using an iterative refinement procedure requiring at least two multiplications for each iteration, comprising:
producing an initial approximation of the output value based on the input value;
performing a first multiplication of a first iteration by a limited-precision multiplier;
performing, in a full-precision multiplier, remaining multiplications for each iteration; and
outputting said output value after performing said remaining multiplications.