An overview of floating-point support and math library on the Intel® XScale™ architecture

New microprocessor architectures often require software support for basic arithmetic operations such as divide, or square root. The Intel® XScale™ processor, designed for low power mobile devices, provides no hardware support for floating point. We show that an efficient software implementation of the basic operations and math library routines can achieve competitive performance, and effectively hide the lack of hardware floating point for most applications.