On portable macrocell FPU generators for division and square root operators complying to the full IEEE-754 standard

Mourad Aberbour (1) , Alain Houelle (1) , Habib Mehrez (1) , Nicolas Vaucher (1) , Alain Guyot (2)

1 ASIM - Architecture des Systèmes intégrés et Micro électronique
2 TIMA - Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés

In this paper, we investigate the design of macrocell generators of division and square root floating-point operators. The number representation used in our operators is the IEEE-754-1985 standard for binary floating-point numbers. The design and implementation of the generators rely on a powerful multi-view macroblock generator tool called GenOptim. This computer-aided design (CAD) tool is able to output a set of different descriptions for several VLSI technologies as well as field programmable gate arrays (FPGAs). The division and square root operators described in this paper use the signed-binary-digit representation. We start first by describing the operators for the significand, then we investigate the IEEE floating-point operators. Throughout this paper, and wherever appropriate, we present the implementation results using the GenOptim environment.

Mots clés: IEEE-754-standard-compliance; floating-point-operators; number-representation; computer-aided-design-tool; CAD-tool; VLSI-technologies; multi-view-macroblock-generator-tool; field-programmable-gate-arrays; FPGA-; signed-binary-digit-representation; GenOptim-environment; portable-macrocell-FPU-generators; division-operators; square-root-operators

Domaines: Micro et nanotechnologies/Microélectronique

Mourad Aberbour, Alain Houelle, Habib Mehrez, Nicolas Vaucher, Alain Guyot. On portable macrocell FPU generators for division and square root operators complying to the full IEEE-754 standard. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 1998, 6 (1), pp.114-121. ⟨10.1109/92.661253⟩. ⟨hal-00014712⟩