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The Comparand Pattern
"... The Comparand pattern provides a means to interpet different objects as being identical for certain contexts. It does so by introducing an instance variable in each class of interest - the comparand - and using it for comparison. Identification of different objects is needed when more than one refer ..."
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The Comparand pattern provides a means to interpet different objects as being identical for certain contexts. It does so by introducing an instance variable in each class of interest - the comparand - and using it for comparison. Identification of different objects is needed when more than one
Optical Implementation of a Constant-Time Multicomparand Bit-Parallel Magnitude-Comparison Algorithm Using Wavelength- and . . .
, 1998
"... highly dependent on word size. One magnitude-comparison algorithm 9 succeeds in achieving word and bit parallelism, but it requires that multiple comparands be processed in serial fashion. In this Letter we present an algorithm and architecture that perform magnitude- comparison processing in a m ..."
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multiple-comparand word-parallel (many words compared with many words) and bit-parallel (many bits compared simultaneously) manner. Binary patterns are represented by spatially distributed orthogonally polarized locations on a twodimensional pixelated grid. We define logical 1 as vertically polarized
Power Efficient Comparators for Long Arguments in Superscalar Processors
"... Traditional pulldown comparators that are used to implement associative addressing logic in superscalar microprocessors dissipate energy on a mismatch in any bit position in the comparands. As mismatches occur much more frequently than matches in many situations, such circuits are extremely energy–i ..."
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as long as 32 bits in size. Such long comparands are routinely used in the load–store queues, caches, BTBs and TLBs. We use the actual layout data and the realistic bit patterns of the comparands (obtained from the simulated execution of SPEC 2000 benchmarks) to show the energy impact from the use