Research Article
A Heuristic Scheduler for Port-Constrained Floating-Point Pipelines
Table 2
Synthesis results of SMBL arithmetic expressions.
| | System with one input port | Max fan-in | Max fan-out | MUX inputs (bits) | Registers (bits) | | Expression | ± | × | ÷ | DII | Min | | Max | Min | | Max | Min | | Max | Min | | Max |
| ucti
/Km)/( (/Ac)) | 3 | 2 | 5 | 5 | 3 | 4 | 4 | 3 | 4 | 5 | 480 | 480 | 742 | 726 | 790 | 1148 |
| uuci
/Km)/ ) | 2 | 2 | 4 | 5 | 3 | 4 | 4 | 3 | 4 | 5 | 416 | 480 | 716 | 659 | 691 | 1081 |
| uaii
/Km)/ ) | 2 | 1 | 4 | 5 | 3 | 4 | 4 | 4 | 4 | 5 | 448 | 512 | 640 | 538 | 583 | 810 |
| ordbbr
Vf(/Keq))/
() +
E1)
where , | 11 | 16 | 7 | 14 | 9 | 12 | 14 | 7 | 9 | 14 | 1344 | 1772 | 2700 | 1771 | 1803 | 2980 |
| ordbur
/
(/()]() | 6 | 8 | 4 | 10 | 6 | 6 | 8 | 6 | 6 | 10 | 928 | 992 | 1606 | 1474 | 1476 | 2172 |
| ppbr
/
()
where ] | 8 | 12 | 5 | 13 | 8 | 8 | 12 | 6 | 7 | 13 | 1056 | 1248 | 2054 | 1246 | 1282 | 1850 |
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