/*
?*?This?code?was?originally?part?of?klibc-0.103.
?*?It?was?adapted?by?David?Hovemeyer?
?*?for?use?in?GeekOS?（http://geekos.sourceforge.net）.
?*
?*?For?information/source?for?klibc?visit
?*???http://www.kernel.org/pub/linux/libs/klibc/
?*???http://www.zytor.com/mailman/listinfo/klibc/
?*???http://www.zytor.com/cvsweb.cgi/klibc/
?*
?*?Modifications?are?marked?with?“DHH“.
?*?Summary?of?modifications:
?*
?*?1.?Use?struct?Output_Sink?to?emit?formatted?output?rather?than?a
?*????character?buffer?to?allow?output?polymorphism.
?*
?*?2.?Buffer?generated?numbers?so?that?all?output?is?generated?in?order.
?*
?*?3.?Don‘t?use?long?long?types:?unsigned?long?is?largest
?*????supported?type.??Arithmetic?on?64?bit?types?requires?runtime?support
?*????（at?least?on?x86）.
?*
?*?See?the?file?LICENSE-klibc?for?license?information.
?*/

/*
?*?vsnprintf.c
?*
?*?vsnprintf（）?from?which?the?rest?of?the?printf（）
?*?family?is?built
?*/

#include?
#include?
#include?
#include?
#include??/*?DHH:?for?struct?Output_Sink?*/

/*
?*?DHH:?Hack?long?long?arithmetic?requires?runtime?support.
?*?Use?unsigned?long?as?greatest?unsigned?integer?supported.
?*/
typedef?long?intmax_t;
typedef?unsigned?long?uintmax_t;
typedef?unsigned?long?uintptr_t;

/*?DHH?*/
#define?ASSERT（exp）?\
do?{?if?（!（exp））?while（1）;?}?while?（0）

enum?flags?{
??FL_ZERO???=?0x01		/*?Zero?modifier?*/
??FL_MINUS??=?0x02		/*?Minus?modifier?*/
??FL_PLUS???=?0x04		/*?Plus?modifier?*/
??FL_TICK???=?0x08		/*?‘?modifier?*/
??FL_SPACE??=?0x10		/*?Space?modifier?*/
??FL_HASH???=?0x20		/*?#?modifier?*/
??FL_SIGNED?=?0x40		/*?Number?is?signed?*/
??FL_UPPER??=?0x80		/*?Upper?case?digits?*/
};

/*?These?may?have?to?be?adjusted?on?certain?implementations?*/
enum?ranks?{
??rank_char	=?-2
??rank_short	=?-1
??rank_int?	=?0
??rank_long	=?1
#if?0
??rank_longlong	=?2
#endif
};

#define?MIN_RANK	rank_char
#define?MAX_RANK	rank_long

#define?INTMAX_RANK	rank_long
#define?SIZE_T_RANK	rank_long
#define?PTRDIFF_T_RANK	rank_long

/*?DHH?*/
#define?EMIT（x）?do?{?（q）->Emit（（q）?（x））;?}?while?（0）

/*
?*?DHH?-?As?a?hack?we?buffer?this?many?digits?when?generating
?*?a?number.??Because?this?code?originally?was?an?implementation
?*?of?vnsprintf（）?it?generated?some?digits?backwards?in?a?buffer.
?*?Obviously?we?can‘t?do?this?when?emitting?output?directly
?*?to?the?console?or?a?file.??So?we?buffer?the?generated?digits
?*?and?then?emit?them?in?order.
?*
?*?This?value?should?be?adequate?to?emit?values?up?to?2^32-1?in
?*?bases?2?or?greater?including?tick?marks.
?*/
#define?NDIGITS_MAX?43

static?size_t
format_int（struct?Output_Sink?*q?uintmax_t?val?enum?flags?flags
	???int?base?int?width?int?prec）
{
??char?*qq;
??size_t?o?=?0?oo;
??static?const?char?lcdigits[]?=?“0123456789abcdef“;
??static?const?char?ucdigits[]?=?“0123456789ABCDEF“;
??const?char?*digits;
??uintmax_t?tmpval;
??int?minus?=?0;
??int?ndigits?=?0?nchars;
??int?tickskip?b4tick;
??char

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-12?23:53??geekos-0.3.0\
?????目錄???????????0??2018-04-12?23:53??geekos-0.3.0\doc\
?????文件????????8371??2005-04-13?00:02??geekos-0.3.0\doc\apiref.html
?????文件????????6111??2005-04-13?00:02??geekos-0.3.0\doc\elfparsingproject.html
?????文件????????4909??2005-04-13?00:02??geekos-0.3.0\doc\FAQ.html
?????目錄???????????0??2018-04-12?23:53??geekos-0.3.0\doc\figures\
?????文件???????50626??2005-04-13?00:02??geekos-0.3.0\doc\figures\faultaction2.png
?????文件?????????722??2005-04-13?00:02??geekos-0.3.0\doc\figures\important.png
?????文件?????????490??2005-04-13?00:02??geekos-0.3.0\doc\figures\note.png
?????文件????????4946??2005-04-13?00:02??geekos-0.3.0\doc\figures\sharedfile.pdf
?????文件????????2491??2005-04-13?00:02??geekos-0.3.0\doc\figures\sharedfile.png
?????文件????????6352??2005-04-13?00:02??geekos-0.3.0\doc\figures\vfs.pdf
?????文件????????4110??2005-04-13?00:02??geekos-0.3.0\doc\figures\vfs.png
?????文件???????28387??2005-04-13?00:02??geekos-0.3.0\doc\figures\vm2.png
?????文件????????1241??2005-04-13?00:02??geekos-0.3.0\doc\figures\warning.png
?????文件???????26462??2005-04-13?00:02??geekos-0.3.0\doc\fsproject.html
?????文件?????????343??2005-04-13?00:02??geekos-0.3.0\doc\hacking-db2latex.xsl.in
?????文件????????1226??2005-04-13?00:02??geekos-0.3.0\doc\hacking-html.xsl.in
?????文件??????348501??2005-04-13?00:02??geekos-0.3.0\doc\hacking.pdf
?????文件??????117259??2005-04-13?00:02??geekos-0.3.0\doc\hacking.xml
?????文件???????10369??2005-04-13?00:02??geekos-0.3.0\doc\hacking101.html
?????文件???????13735??2005-04-13?00:02??geekos-0.3.0\doc\index.html
?????文件????????5085??2005-04-13?00:02??geekos-0.3.0\doc\intro.html
?????文件????????3559??2005-04-13?00:02??geekos-0.3.0\doc\introproject.html
?????文件????????2361??2005-04-13?00:02??geekos-0.3.0\doc\ipcproject.html
?????文件????????1709??2005-04-13?00:02??geekos-0.3.0\doc\Makefile
?????文件???????27175??2005-04-13?00:02??geekos-0.3.0\doc\overview.html
?????文件???????18660??2005-04-13?00:02??geekos-0.3.0\doc\projectoverview.html
?????文件???????11985??2005-04-13?00:02??geekos-0.3.0\doc\schedulingproject.html
?????文件???????17623??2005-04-13?00:02??geekos-0.3.0\doc\usermodeproject.html
?????文件???????20515??2005-04-13?00:02??geekos-0.3.0\doc\vmproject.html
............此處省略1388個文件信息