num_to

函数名称：Convert passed number to decimal string.* Returns the length of string. On buffer overflow, returns 0.* If speed is not important, use snprintf(). It's easy to read the code.

函数原型：int num_to_str(char *buf, int size, unsigned long long num, unsigned int width)

返回类型：int

参数：

类型	参数	名称
char *	buf
int	size
unsigned long long	num
unsigned int	width

347

char tmp[num的长度 * 3] gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-aligned-function-attribute* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html#index-aligned-type-attribute* gcc: https://gcc(2)

351

如果num小于等于9则

352

tmp[0]等于'0'加num

353

len等于1

354

否则

355

len等于Based on code by Douglas W. Jones found at* * (with permission from the author).* Performs no 64-bit division and hence should be fast on 32-bit machines.减tmp

358

如果len大于size或width大于size则返回:0

361

如果width大于len则

362

width等于width减len

363

以idx小于width 循环 buf[idx]等于' '

365

否则

366

width等于0

369

以idx小于len 循环 buf[idx + width]等于tmp[len - idx - 1]

372

返回:len加width

**调用者**
名称	描述
seq_put_decimal_ll
seq_put_decimal_ull_width	A helper routine for putting decimal numbers without rich format of printf()

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告