关键词: GCC 指数函数 表驱动算法 IA-64体系结构

Abstract:

The fast and accurate evaluation of transcendental functions （e. g. exp, log, sin, tan） is very important in the field of scientific computing. This  paper presents the table-driven implementation of the exponential function in GCC by exploiting some key features of the IA-64 architecture. This work   not only improves the floating-point performance of GCC on IA-64, but also guides the implementation of other transcendental functions both on IA-64 and  other platforms.

Key words:  （GCC, exponential function, table-driven algorithm, IA-64 architecture）