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Add constant note.

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nella 2026-06-12 14:57:53 +02:00
parent 309b7d2496
commit 80011b16b2
1 changed files with 2 additions and 1 deletions
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3
kernel/compressor_tree.h
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@ -12,7 +12,6 @@
*
* References:
* - "Some schemes for parallel multipliers" (https://www.acsel-lab.com/arithmetic/arith6/papers/ARITH6_Dadda.pdf)
* - "Binary Adder Architectures for Cell-Based VLSI" (https://iis-people.ee.ethz.ch/~zimmi/publications/adder_arch.pdf)
* - "Basilisk: Achieving Competitive Performance with Open EDA Tools" (https://arxiv.org/pdf/2405.03523)
* - "Binary Adder Architectures for Cell-Based VLSI and their Synthesis" (https://iis-people.ee.ethz.ch/~zimmi/publications/adder_arch.pdf)
* - "A Suggestion for a Fast Multiplier" (https://www.ece.ucdavis.edu/~vojin/CLASSES/EEC280/Web-page/papers/Arithmetic/Wallace_mult.pdf)
@ -30,6 +29,8 @@ namespace CompressorTree
{
// Width and depth thresholds below which a ripple is preferred over parallel-prefix
// NOTE: Based on "Binary Adder Architectures for Cell-Based VLSI and their Synthesis" (Tables 4.7, 4.9) - the threshold
// should be the point where Kogge-Stone isn't strictly less efficient than RCA
constexpr int RIPPLE_PREFIX_WIDTH_THRESHOLD = 16;
constexpr int RIPPLE_PREFIX_DEPTH_THRESHOLD = 5;