Intel® High Level Synthesis Compiler Standard Edition: Best Practices Guide

ID 683259
Date 12/18/2019
Public
Document Table of Contents
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6.1. Avoid Implicit Data Type Conversions

Compile your component code with the -W conversion compiler option, especially if your component uses floating point variables.

Using this option helps you avoid inadvertently having conversions between double-precision and single-precision values when double-precisions variables are not needed. In FPGAs, using double-precision variables can negatively affect the data transfer rate, the latency, and resource utilization of your component.

If you use the Algorithmic C (AC) arbitrary precision datatypes, pay attention to the type propagation rules.