Multi-functional floating-point MAF designs with dot product support

GÖK M., Ozbilen M. M.

MICROELECTRONICS JOURNAL, vol.39, no.1, pp.30-43, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 1
  • Publication Date: 2008
  • Doi Number: 10.1016/j.mejo.2007.11.001
  • Journal Name: MICROELECTRONICS JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.30-43
  • Çukurova University Affiliated: Yes

Abstract

This paper presents multi-functional double-precision and quadruple-precision floating-point multiply-add fused (FPMAF) designs. The double-precision FPMAF design can execute adouble-precision floating-point multiply-add, or two single-precision floating-point multiplications, or a single-precision floating-point dot product. The quadruple-precision FPMAF can perform similar operations with quadruple, double and single precision operands. These architectures can perform a dot-product operation two times or more faster than a basic FPMAF design. The presented multi-functional designs are compared with basic double-precision and quadruple-precision FPMAF designs by ASIC syntheses. The syntheses results show that the proposed double-precision implementation has 8%more area than a standard double-precision FPMAF implementation, and the proposed quadruple-precision design has 12.5% more area than a standard quadruple-precision FPMAF. Both of the proposed designs have one more pipeline stage compared to the basic designs. (c) 2007 Elsevier Ltd. All rights reserved.