http://www.idryman.org/blog/2012/11/21/integer-promotion/#:~:text=In%20C99%2C%20integer%20promotion%20is%20clearly%20defined%20in,other%20types%20are%20unchanged%20by%20the%20integer%20promotions. Nettet11. apr. 2024 · FatFs模块认为以下可移植性条件。ANSI CFatFs模块是一个用ANSI C (C89)编写的中间件。没有平台依赖性，只要编译器符合C89或更高版本。只有exFAT功能需要C99。整数类型的大小char类型的大小必须是8bit。int类型大小，和int的高级形式(integer promotion)（比如unsigned int）必须是16位或32位。

Implicit conversions - cppreference.com

NettetThere are two long long features: the C99 long long feature the non-C99 long long feature Both of the two features have the corresponding extension parts: the C99 long long feature with the associated IBM® extensions the non-C99 IBM long long extension Types of integer literals outside of C99 NettetIn C99, integer promotion is clearly defined in following rule (6.3.1.1): If an int can represent all values of the original type, the value is converted to an int; otherwise, it is converted to an unsigned int. These are called the integer promotions. All other types are unchanged by the integer promotions. Recall that the range of integer types: maple creek apartments mi

C Bit Fields Microsoft Learn

Nettet23. des. 2014 · 1) If you just cast from unsigned to signed integer of the same length back and forth, without any operations in between, you will get the same result every time, so no problem here. But various logical and arithmetical operations are acting differently on signed and unsigned operands. NettetC++98; undefined in C99 and C++112,3 1<<32 undefined3 1/0 undefined INT_MIN%-1 undefined in C11, otherwise undefined in practice 1 The question is: Does c get “promoted” to int before being incre-mented? If so, the behavior is well-defined. We found disagreement between compiler vendors’ implementations of this construct. maple creek apartments michigan