MATHLIB

Table of Contents

• Introduction
• Features Supported
• Features Not Supported
• Additional References
• API

Introduction

Trigonometric functions are commonly used in real-time control applications, particularly within the inner loops of control algorithms, where speed and accuracy is essential. The performance of trigonometric functions is a key careabout for designers of these systems as it can have a significant impact on the overall performance of the system. Until recently, trignometric functions based on lookup tables were considered faster than the polynomial-based methods; however, with the inclusion of floating-point units (FPUs) and faster clock speeds, polynomial-based approximations have gained favor. TI has developed C functions of the most commonly used trigonometric functions using these polynomial-based methods and has optimized them for TI's Arm®-based microcontrollers (MCUs) and microprocessors (MPUs).

Features Supported

Supports Below trignometric functions (ti_arm_trig):

• Sine
• Cosine
• Sine + Cosine
• Arcsine
• Arccosine
• Arctangent
• Arctangent2

Features Not Supported

NA

Additional References

App Note: Optimized Trigonometric Functions on TI Arm Cores

API

APIs for MATHLIB