From 5bfcf6783e145a9692dacf6373cbe9632eaf7938 Mon Sep 17 00:00:00 2001
From: Bananymous <bananymousosq@gmail.com>
Date: Thu, 27 Apr 2023 15:14:03 +0300
Subject: [PATCH] LibC: add proper stdlib.h header

Function declarations taken from the posix specifications
---
 libc/include/stdlib.h | 91 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 81 insertions(+), 10 deletions(-)

diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index c0c7d3b8e..b189c4a67 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -5,18 +5,89 @@
 
 __BEGIN_DECLS
 
-[[noreturn]] void abort(void);
-[[noreturn]] void exit(int);
+typedef struct
+{
+	int quot;
+	int rem;
+} div_t;
 
-int abs(int);
+typedef struct
+{
+	long quot;
+	long rem;
+} ldiv_t;
 
-int atexit(void(*)(void));
-int atoi(const char*);
+typedef struct
+{
+	long long quot;
+	long long rem;
+} lldiv_t;
 
-char* getenv(const char*);
-
-void* malloc(size_t);
-void* calloc(size_t, size_t);
-void free(void*);
+// https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stdlib.h.html
+void		_Exit(int);
+long		a64l(const char*);
+void		abort(void);
+int			abs(int);
+int			atexit(void (*)(void));
+double		atof(const char*);
+int			atoi(const char*);
+long		atol(const char*);
+long long	atoll(const char*);
+void*		bsearch(const void*, const void*, size_t, size_t, int (*)(const void*, const void*));
+void*		calloc(size_t, size_t);
+div_t		div(int, int);
+double		drand48(void);
+double		erand48(unsigned short[3]);
+void		exit(int);
+void		free(void*);
+char*		getenv(const char*);
+int			getsubopt(char**, char* const*, char**);
+int			grantpt(int);
+char*		initstate(unsigned, char*, size_t);
+long		jrand48(unsigned short[3]);
+char*		l64a(long);
+long		labs(long);
+void		lcong48(unsigned short[7]);
+ldiv_t		ldiv(long, long);
+long long	llabs(long long);
+lldiv_t		lldiv(long long, long long);
+long		lrand48(void);
+void*		malloc(size_t);
+int			mblen(const char*, size_t);
+size_t		mbstowcs(wchar_t*, const char*, size_t);
+int			mbtowc(wchar_t*, const char*, size_t);
+char*		mkdtemp(char*);
+int			mkstemp(char*);
+long		mrand48(void);
+long		nrand48(unsigned short[3]);
+int			posix_memalign(void**, size_t, size_t);
+int			posix_openpt(int);
+char*		ptsname(int);
+int			putenv(char*);
+void		qsort(void*, size_t, size_t, int (*)(const void*, const void*));
+int			rand(void);
+int			rand_r(unsigned*);
+long		random(void);
+void*		realloc(void*, size_t);
+char*		realpath(const char*, char*);
+unsigned short* seed48(unsigned short[3]);
+int			setenv(const char*, const char*, int);
+void		setkey(const char*);
+char*		setstate(char*);
+void		srand(unsigned);
+void		srand48(long);
+void		srandom(unsigned);
+double		strtod(const char*, char**);
+float		strtof(const char*, char**);
+long		strtol(const char*, char**, int);
+long double	strtold(const char*, char**);
+long long	strtoll(const char*, char**, int);
+unsigned long strtoul(const char*, char**, int);
+unsigned long long strtoull(const char*, char**, int);
+int			system(const char*);
+int			unlockpt(int);
+int			unsetenv(const char*);
+size_t		wcstombs(char*, const wchar_t*, size_t);
+int			wctomb(char*, wchar_t);
 
 __END_DECLS
\ No newline at end of file