10 static char *write_num(char *str, uint64_t num, int base, int field_width, int precision, int flags…
11 static char *write_float_point_num(char *str, double num, int field_width, int precision, int flags…
85     int precision;   // 精度  in vsprintf()  local
169         precision = -1;  in vsprintf()
175                 precision = va_arg(args, int);  in vsprintf()
180                 precision = skip_and_atoi(&fmt);  in vsprintf()
231             if (precision < 0)  in vsprintf()
234                 precision = len;  in vsprintf()
237             else if (len > precision)  in vsprintf()
239                 len = precision;  in vsprintf()
270                 str = write_num(str, va_arg(args, long long), 8, field_width, precision, flags);  in vsprintf()
272                 str = write_num(str, va_arg(args, int), 8, field_width, precision, flags);  in vsprintf()
283 …      str = write_num(str, (unsigned long)va_arg(args, void *), 16, field_width, precision, flags);  in vsprintf()
293                 str = write_num(str, va_arg(args, int64_t), 16, field_width, precision, flags);  in vsprintf()
295                 str = write_num(str, va_arg(args, int), 16, field_width, precision, flags);  in vsprintf()
304                 str = write_num(str, va_arg(args, long long), 10, field_width, precision, flags);  in vsprintf()
306                 str = write_num(str, va_arg(args, int), 10, field_width, precision, flags);  in vsprintf()
312 …         str = write_num(str, va_arg(args, unsigned long long), 10, field_width, precision, flags);  in vsprintf()
314                 str = write_num(str, va_arg(args, unsigned int), 10, field_width, precision, flags);  in vsprintf()
329             if (precision < 0)  in vsprintf()
330                 precision = 3;  in vsprintf()
332             str = write_float_point_num(str, va_arg(args, double), field_width, precision, flags);  in vsprintf()
352 static char *write_num(char *str, uint64_t num, int base, int field_width, int precision, int flags)  in write_num()  argument
424     if (js_num > precision)  in write_num()
425         precision = js_num;  in write_num()
427     field_width -= precision;  in write_num()
447     while (js_num < precision)  in write_num()
449         --precision;  in write_num()
462 static char *write_float_point_num(char *str, double num, int field_width, int precision, int flags)  in write_float_point_num()  argument
501     uint64_t num_decimal = (uint64_t)(round(1.0 * (num - num_z) * pow(10, precision))); // 获取小数部分  in write_float_point_num()
521     field_width -= (precision + 1 + js_num_z);  in write_float_point_num()
543     for (int i = 0; i < precision && js_num_d-- > 0; ++i)  in write_float_point_num()
546     while (total_dec_count < precision)  in write_float_point_num()