Questionário 01
| Quiz | Início | Fim | Descrição |
|---|---|---|---|
| Q01 | 16-Mar-2026 | 22-Mar-2026 | Sistemas Numéricos e Representação de Dados; Conceitos Básicos de Eletrônica; |
Fixed Point Math
Fixed-point math libraries provide a way to perform fast, non-integer math using integer-only operations, which is especially useful on platforms without a Floating-Point Unit (FPU) like many microcontrollers and embedded systems. They offer a trade-off between range and precision compared to floating-point arithmetic.
Several libraries exist for different programming languages and platforms: C/C++ Libraries
- libfixmath: A popular, platform-independent library offering an interface similar to the standard math.h for Q16.16 fixed-point numbers. It is used in environments like game development for deterministic results.
- fpm: A header-only C++ library designed as a drop-in replacement for floating-point types, supporting a wide range of mathematical functions including trigonometry, power, and logarithms. It is highly tested and aims for type safety.
- FixedPoints (Arduino): A portable, templated C++ library for Arduino and other constrained CPUs, allowing for various fixed-point formats
(e.g., UFixed<I, F>, SFixed<I, F>). - FixedMath: A comprehensive C++23 (C++17 branch available) header-only library with trigonometric and other advanced functions, emphasizing performance and precision.
- Microchip Libraries: Microchip provides free fixed-point math libraries, such as the LibQ family, built into their MPLAB C compilers for PIC24 and dsPIC microcontrollers, supporting Q15, Q16, and Q31 formats.
- TI IQmath Library: Texas Instruments offers a highly optimized, high-precision library (often in assembly) for C programmers using MSP430 and MSP432 devices, designed for computationally intensive real-time applications.