9 static char *write_num(char *str, uint64_t num, int base, int field_width, int precision, int flags…
10 static char *write_float_point_num(char *str, double num, int field_width, int precision, int flags…
81     int flags;       // 用来存储格式信息的bitmap  in vsprintf()  local
101         field_width = flags = 0;  in vsprintf()
119                 flags |= LEFT;  in vsprintf()
124                 flags |= PLUS;  in vsprintf()
128                 flags |= SPACE;  in vsprintf()
133                 flags |= SPECIAL;  in vsprintf()
138                 flags |= PAD_ZERO;  in vsprintf()
162                 flags |= LEFT;  in vsprintf()
204             if (!(flags & LEFT))  in vsprintf()
241             if (!(flags & LEFT))  in vsprintf()
264             flags |= SMALL;  in vsprintf()
266             flags |= SPECIAL;  in vsprintf()
268                 str = write_num(str, va_arg(args, long long), 8, field_width, precision, flags);  in vsprintf()
270                 str = write_num(str, va_arg(args, int), 8, field_width, precision, flags);  in vsprintf()
278                 flags |= PAD_ZERO;  in vsprintf()
281 …      str = write_num(str, (unsigned long)va_arg(args, void *), 16, field_width, precision, flags);  in vsprintf()
287             flags |= SMALL;  in vsprintf()
291                 str = write_num(str, va_arg(args, int64_t), 16, field_width, precision, flags);  in vsprintf()
293                 str = write_num(str, va_arg(args, int), 16, field_width, precision, flags);  in vsprintf()
300             flags |= SIGN;  in vsprintf()
302                 str = write_num(str, va_arg(args, long long), 10, field_width, precision, flags);  in vsprintf()
304                 str = write_num(str, va_arg(args, int), 10, field_width, precision, flags);  in vsprintf()
310 …         str = write_num(str, va_arg(args, unsigned long long), 10, field_width, precision, flags);  in vsprintf()
312                 str = write_num(str, va_arg(args, unsigned int), 10, field_width, precision, flags);  in vsprintf()
330             str = write_float_point_num(str, va_arg(args, double), field_width, precision, flags);  in vsprintf()
350 static char *write_num(char *str, uint64_t num, int base, int field_width, int precision, int flags)  in write_num()  argument
370     if (flags & SMALL)  in write_num()
373     if (flags & LEFT)  in write_num()
374         flags &= ~PAD_ZERO;  in write_num()
376     pad = (flags & PAD_ZERO) ? '0' : ' ';  in write_num()
380     if (flags & SIGN)  in write_num()
394         sign = (flags & PLUS) ? '+' : ((flags & SPACE) ? ' ' : 0);  in write_num()
401     if (flags & SPECIAL)  in write_num()
428     if (!(flags & (LEFT + PAD_ZERO)))  in write_num()
434     if (flags & SPECIAL)  in write_num()
442     if (!(flags & LEFT))  in write_num()
460 static char *write_float_point_num(char *str, double num, int field_width, int precision, int flags)  in write_float_point_num()  argument
476     if (flags & SMALL)  in write_float_point_num()
480     pad = (flags & PAD_ZERO) ? '0' : ' ';  in write_float_point_num()
482     if (flags & SIGN && num < 0)  in write_float_point_num()
490         sign = (flags & PLUS) ? '+' : ((flags & SPACE) ? ' ' : 0);  in write_float_point_num()
522     if (!(flags & LEFT))  in write_float_point_num()