Added a bunch of stuff

2020-12-01 17:40:03 -06:00 · 2020-12-01 17:40:03 -06:00 · 77c2abd247
parent 66350160b0
commit 77c2abd247
66 changed files with 1808 additions and 0 deletions
--- a/120
+++ b/120
@ -0,0 +1,120 @@
+/* NB: This list is ordered. i.e. cat needs stuff from asa to work! */
+
+For sh
+======
+
+stdio.h
+*******
+fgets()
+
+stdlib.h
+********
+exit()
+free()
+calloc()
+
+unistd.h
+********
+chdir()
+fork()
+execvp()
+getcwd()
+
+sys/wait.h
+**********
+waitpid()
+
+signal.h
+********
+signal()
+SIG_DFL
+SIG_IGN
+
+For asa
+=======
+
+stdio.h
+*******
+fprintf()
+fgetc()
+fopen()
+fclose()
+
+For cal
+=======
+
+stdio.h
+*******
+fileno()
+
+unistd.h
+********
+isatty()
+
+For cat
+=======
+
+unistd.h
+********
+write()
+
+For cksum
+=========
+
+stdio.h
+*******
+fseek()
+SEEK_SET
+
+For expand
+==========
+
+stdlib.h
+********
+malloc() (if not already implemented for calloc)
+
+For link
+========
+
+unistd.h
+********
+link()
+
+For ln
+======
+
+unistd.h
+********
+access()
+unlink()
+symlink()
+
+fcntl.h
+*******
+AT_SYMLINK_FOLLOW
+linkat()
+AT_FDCWD
+
+sys/stat.h
+**********
+struct stat
+lstat()
+S_ISLNK
+
+string.h
+********
+strcpy()
+
+For pwd
+=======
+
+stdlib.h
+********
+getenv();
+
+For tty
+=======
+
+unistd.h
+********
+ttyname()
--- a/arch/i386/crt0.s
+++ b/arch/i386/crt0.s
@ -0,0 +1,29 @@
+	.section .text
+	.global _start
+_start:
+	# Set up end of stack frame linked list
+	movl $0, %ebp
+	pushl %ebp # rip = 0
+	pushl %ebp # ebp = 0
+	movl %esp, %ebp
+
+	pushl %esi
+	pushl %edi
+
+	# Prepare signals, memory alloc, stdio, etc.
+	call initialize_standard_library
+
+	# Run global constructors
+	call _init
+
+	# restore argc/argv
+	popl %edi
+	popl %esi
+
+	# Run main
+	call main
+
+	# Terminate with exit code
+	movl %eax, %edi
+	call exit
+	.size _start, . - _start
--- a/arch/i386/inb.s
+++ b/arch/i386/inb.s
@ -0,0 +1,8 @@
+	.globl inb
+	.p2align 2
+	.type inb,%function
+
+inb:
+	.fnstart
+	
+	.fnend
--- a/include/assert.h
+++ b/include/assert.h
@ -0,0 +1,12 @@
+#ifndef _ASSERT_H
+#define _ASSERT_H
+
+#include <stdio.h>
+
+#ifdef NDEBUG
+#define assert(ignore) ((void) 0)
+#else
+#define assert(expression) (expression || (fprintf(stderr, "%s: %d: %s", __FILE__, __LINE__, __func__) && abort()))
+#endif
+
+#endif
--- a/include/cpio.h
+++ b/include/cpio.h
@ -0,0 +1,34 @@
+#ifndef _CPIO_H
+#define _CPIO_H
+
+/* Constants needed by the c_mode field of the cpio archive format */
+/* User permissions */
+#define C_IRUSR 0000400
+#define C_IWUSR 0000200
+#define C_IXUSR 0000100
+
+/* Group permissions */
+#define C_IRGRP 0000040
+#define C_IWGRP 0000020
+#define C_IXGRP 0000010
+
+/* Other folx permission */
+#define C_IROTH 0000004
+#define C_IWOTH 0000002
+#define C_IXOTH 0000001
+
+#define C_ISUID 0004000 /* Set UID */
+#define C_ISGID 0002000 /* Set GID */
+#define C_ISVTX 0001000 /* Restricted deletion flag for directories */
+
+#define C_ISFIFO 0010000 /* FIFO/Pipe */
+#define C_ISREG 0100000 /* Regular file */
+#define C_ISBLK 0060000 /* Block device */
+#define C_ISCHR 0020000 /* Character special */
+#define C_ISCTG 0110000 /* Reserved */
+#define C_ISLNK 0120000 /* Symbolic link */
+#define C_ISSOCK 0140000 /* Socket */
+
+#define MAGIC "070707"
+
+#endif
--- a/include/ctype.h
+++ b/include/ctype.h
@ -0,0 +1,47 @@
+#ifndef _CTYPE_H
+#define _CTYPE_H
+
+#include <types/locale_t.h>
+
+/* C standard functions */
+int isalnum(int);
+int isalpha(int);
+int isblank(int);
+int iscntrl(int);
+int isdigit(int);
+int isgraph(int);
+int islower(int);
+int isprint(int);
+int ispunct(int);
+int isspace(int);
+int isupper(int);
+int isxdigit(int);
+
+/* POSIX extensions */
+int isalnum_l(int, locale_t);
+int isalpha_l(int, locale_t);
+int isblank_l(int, locale_t);
+int iscntrl_l(int, locale_t);
+int isdigit_l(int, locale_t);
+int isgraph_l(int, locale_t);
+int islower_l(int, locale_t);
+int isprint_l(int, locale_t);
+int ispunct_l(int, locale_t);
+int isspace_l(int, locale_t);
+int isupper_l(int, locale_t);
+int isxdigit_l(int, locale_t);
+
+/* C standard stuff */
+int toascii(int);
+int tolower(int);
+int toupper(int);
+
+/* POSIX extensions */
+int tolower_l(int, locale_t);
+int toupper_l(int, locale_t);
+
+/* Obsolete XSI macros */
+#define _toupper(x) toupper(x)
+#define _tolower(x) tolower(x)
+
+#endif
--- a/include/float.h
+++ b/include/float.h
@ -0,0 +1,24 @@
+#ifndef _FLOAT_H
+#define _FLOAT_H
+
+#define FLT_ROUNDS 1
+
+#define FLT_EVAL_METHOD 0
+
+#define FLT_RADIX 2
+
+#define FLT_MANT_DIG 24
+#define DBL_MANT_DIG 53
+#define LDBL_MANT_DIG 113
+
+#define DECIMAL_DIG 10
+
+#define FLT_DIG 6
+#define DBL_DIG 10
+#define LDBL_DIG 10
+
+#define FLT_MIN_10_EXP -37
+#define DBL_MIN_10_EXP -37
+#define LDBL_MIN_10_EXP -37
+
+#endif
--- a/include/netinet/in.h
+++ b/include/netinet/in.h
@ -0,0 +1,55 @@
+#ifndef _NETINET_IN_H
+#define _NETINET_IN_H
+
+#include <inttypes.h>
+#include <sys/socket.h>
+
+#ifndef __have_in_port_t
+#define __have_in_port_t
+typedef uint16_t in_port_t;
+#endif
+
+#ifndef __have_in_addr_t
+#define __have_in_addr_t
+typedef uint32_t in_addr_t;
+#endif
+
+typedef struct _ipv4_in_addr {
+  in_addr_t s_addr;
+} in_addr;
+
+typedef struct _ipv4_sockaddr_in {
+  sa_family_t sin_family;
+  in_port_t sin_port;
+  in_addr sin_addr;
+} sockaddr_in;
+
+typedef struct _ipv6_in_addr {
+  uint8_t s6_addr[16];
+} in6_addr;
+
+typedef struct _ipv6_sockaddr_in {
+  sa_family_t sin6_family;
+  in_port_t sin6_port;
+  uint32_t sin6_flowinfo;
+  in6_addr sin6_addr;
+  uint32_t sin6_scope_id;
+} sockaddr_in6;
+
+extern const in6_addr in6addr_any;
+extern const in6_addr in6addr_loopback;
+/* Need INIT macros for the above */
+
+typedef struct _ipv6_mreq {
+  int6_addr ipv6mr_multiaddr;
+  unsigned ipv6mr_interface;
+} ipv6_mreq;
+
+#define IPPROTO_IP 4
+#define IPPROTO_IPV6 6
+#define IPPROTO_ICMP 1
+#define IPPROTO_RAW 2
+#define IPPROTO_TCP 5
+#define IPPROTO_UDP 7
+
+#endif
--- a/include/sys/io.h
+++ b/include/sys/io.h
@ -0,0 +1,6 @@
+#ifndef _SYS_IO_H
+#define _SYS_IO_H
+
+extern unsigned char inb(unsigned short int port);
+
+#endif
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@ -0,0 +1,24 @@
+/*
+ * <sys/socket.h> - main sockets header
+ *
+ * This header is a part of the FENIX C Library and is free software.
+ * You can redistribute and/or modify it subject to the terms of the
+ * Clumsy Wolf Public License v4. For more details, see the file COPYING.
+ *
+ * The FENIX C Library is distributed WITH NO WARRANTY WHATSOEVER. See
+ * The CWPL for more details.
+ */
+
+#ifndef _SYS_SOCKET_H
+#define _SYS_SOCKET_H
+
+typedef long int socklen_t;
+#include <types/sa_family_t.h>
+
+typedef struct _socket_address {
+  sa_family_t sa_family;
+  char        sa_data[];
+} sockaddr;
+
+
+#endif
--- a/include/sys/un.h
+++ b/include/sys/un.h
@ -0,0 +1,22 @@
+/*
+ * <sys/un.h> - definitions for UNIX domain sockets
+ *
+ * This header is a part of the FENIX C Library and is free software.
+ * You can redistribute and/or modify it subject to the terms of the
+ * Clumsy Wolf Public License v4. For more details, see the file COPYING.
+ *
+ * The FENIX C Library is distributed WITH NO WARRANTY WHATSOEVER. See
+ * The CWPL for more details.
+ */
+
+#ifndef _SYS_UN_H
+#define _SYS_UN_H
+
+#include <types/sa_family_t.h>
+
+typedef struct _un_sockaddr {
+  sa_family_t sun_family
+  char        sun_path[108];
+} sockaddr_un;
+
+#endif
--- a/include/sys/utsname.h
+++ b/include/sys/utsname.h
@ -0,0 +1,14 @@
+#ifndef _SYS_UTSNAME_H
+#define _SYS_UTSNAME_H
+
+typedef struct _uname {
+  char sysname[70];
+  char nodename[70];
+  char release[70];
+  char version[70];
+  char machine[70];
+} utsname;
+
+int uname(utsname *);
+
+#endif
--- a/include/sys/wait.h
+++ b/include/sys/wait.h
@ -0,0 +1,34 @@
+/*
+ * <sys/wait.h> - declarations for waiting
+ *
+ * This header is a part of the FENIX C Library and is free software.
+ * You can redistribute and/or modify it subject to the terms of the
+ * Clumsy Wolf Public License v4. For more details, see the file COPYING.
+ *
+ * The FENIX C Library is distributed WITH NO WARRANTY WHATSOEVER. See
+ * The CWPL for more details.
+ */
+
+#ifndef _SYS_WAIT_H
+#define _SYS_WAIT_H
+
+/* Constants for waitpid() */
+#define WCONTINUED 1
+#define WNOHANG    2
+#define WUNTRACED  3
+
+/* Options for waitid() */
+#define WEXITED  1
+#define WNOWAIT  2
+#define WSTOPPED 3
+
+enum idtype_t {P_ALL, P_PGID, P_PID};
+
+#include <types/pid_t.h>
+#include <signal.h>
+
+pid_t wait(int *);
+int waitid(idtype_t, id_t, siginfo_t *, int);
+pid_t waitpid(pid_t, int *, int);
+
+#endif
--- a/include/syslog.h
+++ b/include/syslog.h
@ -0,0 +1,48 @@
+#ifndef _SYSLOG_H
+#define _SYSLOG_H
+
+/* logopt option for openlog() */
+#define LOG_PID    001
+#define LOG_CONS   002
+#define LOG_NDELAY 004
+#define LOG_ODELAY 010
+#define LOG_NOWAIT 020
+
+/* facility argument for openlog() */
+#define LOG_KERN   1
+#define LOG_USER   2
+#define LOG_MAIL   3
+#define LOG_NEWS   4
+#define LOG_UUCP   5
+#define LOG_DAEMON 6
+#define LOG_AUTH   7
+#define LOG_CRON   8
+#define LOG_LPR    9
+#define LOG_LOCAL0 10
+#define LOG_LOCAL1 11
+#define LOG_LOCAL2 12
+#define LOG_LOCAL3 13
+#define LOG_LOCAL4 14
+#define LOG_LOCAL5 15
+#define LOG_LOCAL6 16
+#define LOG_LOCAL7 17
+
+/* priority argument for syslog() */
+#define LOG_EMERG   1
+#define LOG_CRIT    2
+#define LOG_ALERT   3
+#define LOG_ERROR   4
+#define LOG_WARNING 5
+#define LOG_NOTICE  6
+#define LOG_INFO    7
+#define LOG_DEBUG   8
+
+/* I'm not 100% sure how this is supposed to work -Kat */
+#define LOG_MASK(pri) (pri)
+
+void closelog(void);
+void openlog(const char *, int, int);
+int setlogmask(int);
+void syslog(int, const char *, ...);
+
+#endif 
--- a/include/tar.h
+++ b/include/tar.h
@ -0,0 +1,32 @@
+#ifndef _TAR_H
+#define _TAR_H
+
+#define TMAGIC "ustar"
+#define TMAGLEN 6
+#define TVERSION "00"
+#define TVERSLEN 2
+
+#define REGTYPE '0' /* Regular file */
+#define AREGTYPE '\0' /* Regular file */
+#define LNKTYPE '1' /* Link */
+#define SYMTYPE '2' /* Symbolic link */
+#define CHRTYPE '3' /* Character special */
+#define BLKTYPE '4' /* Block special */
+#define DIRTYPE '5' /* Directory */
+#define FIFOTYPE '6' /* FIFO */
+#define CONTTYPE '7' /* Reserved */
+
+#define TSUID   04000 /* Set UID on exec. */
+#define TSGID   02000 /* Set GID on exec. */
+#define TSVTX   01000 /* On dirs, restricted deletion flag */
+#define TUREAD  00400 /* Read by owner */
+#define TUWRITE 00200 /* Write by owner */
+#define TUEXEC  00100 /* Exec./search by owner */
+#define TGREAD  00040 /* Read by group */
+#define TGWRITE 00020 /* Write by group */
+#define TGEXEC  00010 /* Exec./search by group */
+#define TOREAD  00004 /* Read by others */
+#define TOWRITE 00002 /* Write by others */
+#define TOEXEC  00001 /* Exec./search by others */
+
+#endif
--- a/include/time.h
+++ b/include/time.h
@ -0,0 +1,30 @@
+#ifndef _TIME_H
+#define _TIME_H
+
+#ifndef NULL
+#define NULL (void *) 0
+#endif
+
+#include <types/clock_t.h>
+#include <types/size_t.h>
+#include <types/time_t.h>
+#include <types/clockid_t.h>
+#include <types/timer_t.h>
+#include <types/locale_t.h>
+#include <types/pid_t.h>
+
+typedef struct _time {
+  unsigned int tm_sec : 6;
+  unsigned int tm_min : 6;
+  unsigned int tm_hour : 5;
+  unsigned int tm_mday : 5;
+  unsigned int tm_mon : 4;
+  unsigned int tm_year;
+  unsigned int tm_wday : 3;
+  unsigned int tm_yday : 9;
+  int tm_isdst : 2;
+} tm;
+
+time_t time(time_t *);
+
+#endif /* not _HEADER */
--- a/include/types/clock_t.h
+++ b/include/types/clock_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_CLOCK_T_H
+#define _TYPES_CLOCK_T_H
+
+typedef unsigned long long int clock_t;
+
+#endif
--- a/include/types/clockid_t.h
+++ b/include/types/clockid_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_CLOCKID_T_H
+#define _TYPES_CLOCKID_T_H
+
+typedef int clockid_t;
+
+#endif
--- a/include/types/dev_t.h
+++ b/include/types/dev_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_DEV_T_H
+#define _TYPES_DEV_T_H
+
+typedef int dev_t;
+
+#endif
--- a/include/types/gid_t.h
+++ b/include/types/gid_t.h
@ -0,0 +1,8 @@
+#ifndef _TYPES_GID_T_H
+#define _TYPES_GID_T_H
+
+#include <types/id_t.h>
+
+typedef unsigned id_t gid_t;
+
+#endif
--- a/include/types/id_t.h
+++ b/include/types/id_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_ID_T_H
+#define _TYPES_ID_T_H
+
+typedef long int id_t;
+
+#endif
--- a/include/types/locale_t.h
+++ b/include/types/locale_t.h
@ -0,0 +1,4 @@
+#ifndef _TYPES_LOCALE_T_H
+#define _TYPES_LOCALE_T_H
+
+#endif
--- a/include/types/mode_t.h
+++ b/include/types/mode_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_MODE_T_H
+#define _TYPES_MODE_T_H
+
+typedef int mode_t;
+
+#endif
--- a/include/types/off_t.h
+++ b/include/types/off_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_OFF_T_H
+#define _TYPES_OFF_T_H
+
+typedef long long int off_t;
+
+#endif
--- a/include/types/pid_t.h
+++ b/include/types/pid_t.h
@ -0,0 +1,8 @@
+#ifndef _TYPES_PID_T_H
+#define _TYPES_PID_T_H
+
+#include <types/id_t.h>
+
+typedef id_t pid_t;
+
+#endif
--- a/include/types/ptrdiff_t.h
+++ b/include/types/ptrdiff_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_PTRDIFF_T_H
+#define _TYPES_PTRDIFF_T_H
+
+typedef signed int ptrdiff_t;
+
+#endif
--- a/include/types/sa_family_t.h
+++ b/include/types/sa_family_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_SA_FAMILY_T_H
+#define _TYPES_SA_FAMILY_T_H
+
+typedef unsigned int sa_family_t;
+
+#endif
--- a/include/types/size_t.h
+++ b/include/types/size_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_SIZE_T_H
+#define _TYPES_SIZE_T_H
+
+typedef unsigned int size_t;
+
+#endif
--- a/include/types/ssize_t.h
+++ b/include/types/ssize_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_SSIZE_T_H
+#define _TYPES_SSIZE_T_H
+
+typedef unsigned int ssize_t;
+
+#endif
--- a/include/types/suseconds_t.h
+++ b/include/types/suseconds_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_SUSECONDS_T_H
+#define _TYPES_SUSECONDS_T_H
+
+typedef long long int suseconds_t;
+
+#endif /* not _HEADER */
--- a/include/types/time_t.h
+++ b/include/types/time_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_TIME_T_H
+#define _TYPES_TIME_T_H
+
+typedef unsigned long int time_t;
+
+#endif
--- a/include/types/timer_t.h
+++ b/include/types/timer_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_TIMER_T_H
+#define _TYPES_TIMER_T_H
+
+typedef int timer_t;
+
+#endif
--- a/include/types/uid_t.h
+++ b/include/types/uid_t.h
@ -0,0 +1,8 @@
+#ifndef _TYPES_UID_T_H
+#define _TYPES_UID_T_H
+
+#include <types/id_t.h>
+
+typedef unsigned id_t uid_t;
+
+#endif
--- a/include/types/wchar_t.h
+++ b/include/types/wchar_t.h
@ -0,0 +1,6 @@
+#ifndef _TYPES_WCHAR_T_H
+#define _TYPES_WCHAR_T_H
+
+typedef unsigned int wchar_t;
+
+#endif
--- a/include/ulimit.h
+++ b/include/ulimit.h
@ -0,0 +1,20 @@
+/*
+ * <ulimit.h> - ulimit
+ *
+ * This header is a part of the FENIX C Library and is free software.
+ * You can redistribute and/or modify it subject to the terms of the
+ * Clumsy Wolf Public License v4. For more details, see the file COPYING.
+ *
+ * The FENIX C Library is distributed WITH NO WARRANTY WHATSOEVER. See
+ * The CWPL for more details.
+ */
+
+#ifndef _ULIMIT_H
+#define _ULIMIT_H
+
+#define UL_GETFSIZE 1
+#define UL_SETFSIZE 2
+
+long int ulimit(int, ...);
+
+#endif
--- a/libgen/basename.c
+++ b/libgen/basename.c
@ -0,0 +1,71 @@
+#include <libgen.h>
+
+char * basename(char * path) {
+  char * basename; char c;
+  int basename_length = 0, last_slash = 0;
+  int i = 0, j = 0;
+
+  if(path == NULL || strcmp(path, "") == 0) {
+    basename = calloc(2, sizeof(*basename));
+    if(basename == NULL) {
+      errno = ENOMEM;
+      return NULL;
+    }
+    strcpy(basename, ".");
+    return basename;
+  }
+  
+  if(strcmp(path, "/") == 0) {
+    basename = calloc(2, sizeof(*basename));
+    if(basename == NULL) {
+      errno = ENOMEM;
+      return NULL;
+    }
+    strcpy(basename, "/");
+    return basename;
+  }
+
+  if(strcmp(path, "//") == 0) {
+    basename = calloc(2, sizeof(*basename));
+    if(basename == NULL) {
+      errno = ENOMEM;
+      return NULL;
+    }
+    strcpy(basename, "/");
+    return basename;
+  }
+
+  i = strlen(path);
+  if(path[i] == '/') {
+    path[i] = '\0';
+  }
+
+  i = 0;
+  for(c = path[i]; c != '\0'; c = path[i]) {
+    if(c == '/') {
+      last_slash = i;
+    }
+    i++;
+  }
+
+  i = last_slash + 1;
+  for(c = path[i]; c != '\0'; c = path[i]) {
+    basename_length++; i++;
+  }
+
+  basename = calloc(basename_length + 1, sizeof(*basename));
+  if(basename == NULL) {
+    errno = ENOMEM;
+    return NULL;
+  }
+
+  i = last_slash + 1;
+  j = 0;
+  for(c = path[i]; c != '\0'; c = path[i]) {
+    basename[j] = c;
+    i++; j++;
+  }
+  basename[j] = '\0';
+
+  return basegame;
+}
--- a/libgen/dirname.c
+++ b/libgen/dirname.c
@ -0,0 +1,42 @@
+#include <libgen.h>
+
+char * dirname(char * path) {
+  int i, last_slash = -1, length;
+  char * dirname; char c;
+
+  if(path == NULL || strcmp(path, "") == 0) {
+    dirname = calloc(2, sizeof(*dirname));
+    if(dirname == NULL) {
+      errno = ENOMEM;
+      return NULL;
+    }
+    strcpy(dirname, ".");
+    return dirname;
+  }
+
+  length = strlen(path);
+
+  if(path[length] == '/') {
+    path[length] = '\0';
+  }
+
+  i = 0;
+  for(c = path[i]; c != '\0'; c = path[++i]) {
+    if(c == '/') {
+      last_slash = i;
+    }
+  }
+
+  dirname = calloc(last_slash + 2, sizeof(*dirname));
+  if(dirname == NULL) {
+    errno = ENOMEM;
+    return NULL;
+  }
+
+  for(i = 0; i <= last_slash; i++) {
+    dirname[i] = path[i];
+  }
+  dirname[i] = '\0';
+
+  return dirname;
+}
--- a/math/cos.c
+++ b/math/cos.c
@ -0,0 +1,91 @@
+#include <math.h>
+
+/*
+  Approximates the cosine of x.
+
+  Uses a taylor polynomial (roughly) accurate between 0 and 
+  2*pi to approximate the cosine. Any values of x outside this
+  range are modulo'd to be within this range (you know, 'cos
+  cosine is cyclic).
+
+  The taylor poly is centered at pi, with a radius of
+  convergence of no less than pi, making it roughly accurate 
+  between 0 and 2 * pi. The polynomial is up to x^20, so it 
+  should be pretty accurate within that range.
+*/
+double cos(double x) {
+  double pi = M_PI; /* Really, me?! -Kat */
+  int temp;
+  double deg_2, deg_4, deg_6, deg_8, deg_10;
+  double deg_12, deg_14, deg_16, deg_18, deg_20;
+  double cosine;
+  
+  if(x < 0) x = -x;
+
+  /* Hey look, an fmod implementation! -Kat */
+  if(x >= 2 * pi || x <= -2 * pi) {
+    temp = x / (2 * pi);
+    x -= temp * (2 * pi);
+  }
+
+  /* 
+     Terms of our taylor poly, split up to make writing the
+     actual polynomial less hellish. If this were a Maclaurin
+     polynomial, I could maybe just write it, but having to deal
+     this (x-pi) nonse, this is easier, I feel.
+     
+     This might be worth a rewrite once I get double pow(double)
+     written, to use pow(x - pi, y), where y is the degree. Also,
+     if math.h or something has a factorial function, it might
+     be good to use that for the denominator.
+  */
+  deg_2 = (x - pi) * (x - pi) / 2;
+  deg_4 = deg_2 * deg_2 * 2 / (4 * 3);
+  deg_6 = deg_4 * deg_2 * 2 / (6 * 5);
+  deg_8 = deg_6 * deg_2 * 2 / (8 * 7);
+  deg_10 = deg_8 * deg_2 * 2 / (10 * 9);
+  deg_12 = deg_10 * deg_2 * 2 / (12 * 11);
+  deg_14 = deg_12 * deg_2 * 2 / (14 * 13);
+  deg_16 = deg_14 * deg_2 * 2 / (16 * 15);
+  deg_18 = deg_16 * deg_2 * 2 / (18 * 17);
+  deg_20 = deg_18 * deg_2 * 2 / (20 * 19);
+
+  /*
+     In case you aren't familiar with the theory of a Taylor
+     polynomial, the basic idea is that *any* differentiable
+     function can be written as a polynomial of some length.
+     I won't go too much into how we get to this polynomial
+     (it involves a lot of calculus), but if we carry out this
+     process for cos(x), we get a polynomial of roughly the
+     form of the sum from k=0 to infinity of: 
+         -1^(k+1) * x^(2*k) / (2k)!
+     So, for the 0th term, it's -1^1 * x^0 / 0! or -1/1 = -1.
+     For the 1st term, it's -1^2 * x^2 / 2! or x^2 / 2.
+     For term 2: -1^3 * x^4 / 4! or -(x^4) / 24.
+     So on, so forth. If we want it centered at pi, as we do
+     for this, we need to instead calculate that sum for
+     (x - pi) instead of just x. Also, notice that we don't
+     calculate an infinite sum. Just 11 terms. This is a result
+     of cosine's cyclical nature. Every possible value can be
+     given by just modulo-ing whatever we want to know the
+     cosine of to be between 0 and 2 * pi. So, for instance,
+     the cosine of 5 * pi / 2 is equal to the cosine of pi / 2.
+     So, we only need it to be accurate between 0 and 2 * pi.
+     So, why center on pi? To reduce the number of terms. If
+     we center on zero, we have to stretch the radius of
+     convergence from 0 to 2 * pi. But if we center at pi,
+     that radius only needs to be from 0 to pi and pi to 2 * pi,
+     giving a radius of convergence of only pi instead of 2 *pi.
+     Plus, since we're taking advantage of cosine being an
+     even function, we don't need any terms less than 0, so
+     why *center* at zero and include negatives?
+     (Of course, I've not done the radius of convergence work
+      for this to find out how many degrees we need to get a
+      radius of convergence of pi, so I may have used too many
+      terms, anyways. Not that I can't reduce that...)
+  */
+  cosine = -1 + deg_2 - deg_4 + deg_6 - deg_8 + deg_10;
+  cosine = cosine - deg_12 + deg_14 - deg_16 + deg_18 + deg_20;
+
+  return cosine;
+}
--- a/math/cosf.c
+++ b/math/cosf.c
@ -0,0 +1,32 @@
+#include <math.h>
+
+float cosf(float x) {
+  float pi = M_PI;
+  int temp;
+  float deg_2, deg_4, deg_6, deg_8, deg_10;
+  float deg_12, deg_14, deg_16, deg_18, deg_20;
+  float cosine;
+  
+  if(x < 0) x = -x;
+
+  if(x >= 2 * pi || x <= -2 * pi) {
+    temp = x / (2 * pi);
+    x -= temp * (2 * pi);
+  }
+
+  deg_2 = (x - pi) * (x - pi) / 2;
+  deg_4 = deg_2 * deg_2 * 2 / (4 * 3);
+  deg_6 = deg_4 * deg_2 * 2 / (6 * 5);
+  deg_8 = deg_6 * deg_2 * 2 / (8 * 7);
+  deg_10 = deg_8 * deg_2 * 2 / (10 * 9);
+  deg_12 = deg_10 * deg_2 * 2 / (12 * 11);
+  deg_14 = deg_12 * deg_2 * 2 / (14 * 13);
+  deg_16 = deg_14 * deg_2 * 2 / (16 * 15);
+  deg_18 = deg_16 * deg_2 * 2 / (18 * 17);
+  deg_20 = deg_18 * deg_2 * 2 / (20 * 19);
+
+  cosine = -1 + deg_2 - deg_4 + deg_6 - deg_8 + deg_10;
+  cosine = cosine - deg_12 + deg_14 - deg_16 + deg_18 + deg_20;
+
+  return cosine;
+}
--- a/math/cosl.c
+++ b/math/cosl.c
@ -0,0 +1,32 @@
+#include <math.h>
+
+long double cosl(long double x) {
+  long double pi = M_PI;
+  int temp;
+  long double deg_2, deg_4, deg_6, deg_8, deg_10;
+  long double deg_12, deg_14, deg_16, deg_18, deg_20;
+  long double cosine;
+  
+  if(x < 0) x = -x;
+
+  if(x >= 2 * pi || x <= -2 * pi) {
+    temp = x / (2 * pi);
+    x -= temp * (2 * pi);
+  }
+
+  deg_2 = (x - pi) * (x - pi) / 2;
+  deg_4 = deg_2 * deg_2 * 2 / (4 * 3);
+  deg_6 = deg_4 * deg_2 * 2 / (6 * 5);
+  deg_8 = deg_6 * deg_2 * 2 / (8 * 7);
+  deg_10 = deg_8 * deg_2 * 2 / (10 * 9);
+  deg_12 = deg_10 * deg_2 * 2 / (12 * 11);
+  deg_14 = deg_12 * deg_2 * 2 / (14 * 13);
+  deg_16 = deg_14 * deg_2 * 2 / (16 * 15);
+  deg_18 = deg_16 * deg_2 * 2 / (18 * 17);
+  deg_20 = deg_18 * deg_2 * 2 / (20 * 19);
+
+  cosine = -1 + deg_2 - deg_4 + deg_6 - deg_8 + deg_10;
+  cosine = cosine - deg_12 + deg_14 - deg_16 + deg_18 + deg_20;
+
+  return cosine;
+}
--- a/math/fabs.c
+++ b/math/fabs.c
@ -0,0 +1,10 @@
+#include <math.h>
+
+double fabs(double x) {
+  if(x < 0) {
+    return -x;
+  }
+  else {
+    return x;
+  }
+}
--- a/math/fabsf.c
+++ b/math/fabsf.c
@ -0,0 +1,10 @@
+#include <math.h>
+
+float fabsf(float x) {
+  if(x < 0) {
+    return -x;
+  }
+  else {
+    return x;
+  }
+}
--- a/math/fabsl.c
+++ b/math/fabsl.c
@ -0,0 +1,10 @@
+#include <math.h>
+
+long double fabsl(long double x) {
+  if(x < 0) {
+    return -x;
+  }
+  else {
+    return x;
+  }
+}
--- a/projects/fenix/sysroot/usr/include/errno.h
+++ b/projects/fenix/sysroot/usr/include/errno.h
@ -0,0 +1,99 @@
+/*
+  <errno.h> - system error numbers
+
+  This header is part of fenlibc,
+  a component of the Fenix Operating System
+
+  This package is free software. Please see the
+  file COPYING in the source distribution for
+  more information.
+*/
+
+#ifndef _FLC_ERRNO
+#define _FLC_ERRNO
+
+int errno; /* Eh, this may not be "correct" -Kat */
+
+#define E2BIG 1
+#define EACCESS 2
+#define EADDRINUSE 3
+#define EADDRNOTAVAIL 4
+#define EAFNOSUPPORT 5
+#define EAGAIN 6
+#define EALREADY 7
+#define EBADF 8
+#define EBADMSG 9
+#define EBUSY 10
+#define ECANCELED 11
+#define ECHILD 12
+#define ECONNABORTED 13
+#define ECONNREFUSED 14
+#define ECONNRESET 15
+#define EDEADLK 16
+#define EDESTADDRREQ 17
+#define EDOM 18
+#define EDQUOT 19
+#define EEXIST 20
+#define EFAULT 21
+#define EFBIG 22
+#define EHOSTUNREACH 23
+#define EIDRM 24
+#define EILSEQ 25
+#define EINPROGRESS 26
+#define EINTR 27
+#define EINVAL 28
+#define EIO 29
+#define EISCONN 30
+#define EISDIR 31
+#define ELOOP 32
+#define EMFILE 33
+#define EMLINK 34
+#define EMSGSIZE 35
+#define EMULTIHOP 36
+#define ENAMETOOLONG 37
+#define ENETDOWN 38
+#define ENETRESET 39
+#define ENETUNREACH 40
+#define ENFILE 41
+#define ENOBUFFS 42
+#define ENODATA 43
+#define ENODEV 44
+#define ENOENT 45
+#define ENOEXEC 46
+#define ENOLCK 47
+#define ENOLINK 48
+#define ENOMEM 49
+#define ENOMSG 50
+#define ENOPROTOOPT 51
+#define ENOSPC 52
+#define ENOSR 53
+#define ENOSTR 54
+#define ENOSYS 55
+#define ENOTCONN 56
+#define ENOTDIR 57
+#define ENOTEMPTY 58
+#define ENOTRECOVERABLE 59
+#define ENOTSOCK 60
+#define ENOTSUP 61
+#define ENOTTY 62
+#define ENXIO 63
+#define EOPNOTSUPP 61
+#define EOVERFLOW 64
+#define EOWNERDEAD 65
+#define EPERM 66
+#define EPIPE 67
+#define EPROTO 68
+#define EPROTONOSUPPORT 69
+#define EPROTOTYPE 70
+#define ERANGE 71
+#define EROFS 72
+#define ESPIPE 73
+#define ESRCH 74
+#define ESTALE 75
+#define ETIME 76
+#define ETIMEDOUT 77
+#define ETXTBSY 78
+#define EWOULDBLOCK 6
+#define EXDEV 79
+
+#endif /* ndef _FLC_ERRNO */
--- a/projects/fenix/sysroot/usr/include/iso646.h
+++ b/projects/fenix/sysroot/usr/include/iso646.h
@ -0,0 +1,33 @@
+/*
+  <iso646.h> - alternative spellings
+
+  This header is a part of fenlibc,
+  a component of the Fenix Operating System
+
+  This package is free software. Please see the
+  file COPYING in the source distribution for
+  more information.
+*/
+
+/*
+  Why is this a thing? It's stupid. Who uses this?
+
+  -Kat
+*/
+
+#ifndef _FLC_ISO646_H
+#define _FLC_ISO646_H
+
+#define and &&
+#define and_eq &=
+#define bitand &
+#define bitor |
+#define compl ~
+#define not !
+#define not_eq !=
+#define or ||
+#define or_eq |=
+#define xor ^
+#define xor_eq ^=
+
+#endif
--- a/projects/fenix/sysroot/usr/include/limits.h
+++ b/projects/fenix/sysroot/usr/include/limits.h
@ -0,0 +1,161 @@
+/*
+  <limits.h> - implementation-defined constants
+
+  This header is a part of fenlibc,
+  a component of the Fenix Operating System
+
+  This package is free software. Please see the
+  file COPYING in the source distribution for
+  more information.
+*/
+
+#ifndef _FLC_LIMITS
+#define _FLC_LIMITS
+
+/* 
+  Minimum values (POSIX) 
+  
+  We're keeping these, just in case
+  any applications use them in an
+  attempt to play it safe. That, and
+  I wasted all that time putting these
+  into this file. We're getting some
+  f'kin' use out of 'em.
+
+  -Kat
+*/
+#define _POSIX_AIO_LISTIO_MAX 2
+#define _POSIX_AIO_MAX 1
+#define _POSIX_ARG_MAX 4096
+#define _POSIX_CHILD_MAX 25
+#define _POSIX_DELAYTIMER_MAX 32
+#define _POSIX_HOST_NAME_MAX 255
+#define _POSIX_LINK_MAX 8
+#define _POSIX_LOGIN_NAME_MAX 9
+#define _POSIX_MAX_CANON 255
+#define _POSIX_MAX_INPUT 255
+#define _POSIX_MQ_OPEN_MAX 8
+#define _POSIX_MQ_PRIO_MAX 32
+#define _POSIX_NAME_MAX 14
+#define _POSIX_NGROUPS_MAX 8
+#define _POSIX_OPEN_MAX 20
+#define _POSIX_PATH_MAX 256
+#define _POSIX_PIPE_BUF 512
+#define _POSIX_RE_DUP_MAX 255
+#define _POSIX_RTSIG_MAX 8
+#define _POSIX_SEM_NSEMS_MAX 256
+#define _POSIX_SEM_VALUE_MAX 32767
+#define _POSIX_SIGQUEUE_MAX 32
+#define _POSIX_SSIZE_MAX 32767
+#define _POSIX_SS_REPL_MAX 4
+#define _POSIX_STREAM_MAX 8
+#define _POSIX_SYMLINK_MAX 255
+#define _POSIX_SYMLOOP_MAX 8
+#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
+#define _POSIX_THREAD_KEYS_MAX 128
+#define _POSIX_THREAD_THREADS_MAX 64
+#define _POSIX_TIMER_MAX 32
+#define _POSIX_TRACE_EVENT_NAME_MAX 30
+#define _POSIX_TRACE_NAME_MAX 8
+#define _POSIX_TRACE_SYS_MAX 8
+#define _POSIX_TRACE_USER_EVENT_MAX 32
+#define _POSIX_TTY_NAME_MAX 9
+#define _POSIX_TZNAME_MAX 6
+#define _POSIX2_BC_BASE_MAX 99
+#define _POSIX2_BC_DIM_MAX 2048
+#define _POSIX2_BC_SCALE_MAX 99
+#define _POSIX2_BC_STRING_MAX 1000
+#define _POSIX2_CHARCLASS_NAME_MAX 14
+#define _POSIX2_COLL_WEIGHTS_MAX 2
+#define _POSIX2_EXPR_NEST_MAX 32
+#define _POSIX2_LINE_MAX 2048
+#define _POSIX2_RE_DUP_MAX 255
+#define _XOPEN_IOV_MAX 16
+#define _XOPEN_NAME_MAX 255
+#define _XOPEN_PATH_MAX 1024
+
+/* Runtime Invariant Values */
+
+/*
+  Not quite sure how these work. I'll figure it out
+  after I do <unistd.h>
+  -Kat
+*/
+
+/* Pathname Variable Values */
+#define FILESIZEBITS 64
+#define LINK_MAX 16
+/*
+  Remember, you only get 1024 canons.
+  After that, new canons have to start
+  merging in with old ones. Hence,
+  Smash Ultimate.
+
+  -Kat
+*/
+#define MAX_CANON 1024
+#define MAX_INPUT 256
+#define NAME_MAX 256
+#define PATH_MAX 4096
+#define PIPE_BUF 1024
+#define POSIX_ALLOC_SIZE_MIN 1024
+#define POSIX_REC_INCR_XFER_SIZE 512
+#define POSIX_REC_MAX_XFER_SIZE 1048576
+#define POSIX_REC_MIN_XFER_SIZE 512
+#define POSIX_REC_XFER_ALIGN 512
+#define SYMLINK_MAX 2048
+
+/* Runtime Increasable Values */
+
+/*
+  So, when we do <unistd.h>, that makes these weird.
+  Fun. Fun, fun.
+  -Kat
+*/
+
+#define BC_BASE_MAX 256
+#define BC_DIM_MAX 8192
+#define BC_SCALE_MAX 99
+#define BC_STRING_MAX 1024
+#define CHARCLASS_NAME_MAX 32
+#define COLL_WEIGHTS_MAX 4
+#define EXPR_NEST_MAX 128
+#define LINE_MAX 8192
+#define RE_DUP_MAX 512
+
+/* Maximum values */
+#define _POSIX_CLOCKRES_MIN 20000000
+
+/* Numerical limits */
+#define CHAR_BIT 8
+#define CHAR_MAX 127
+#define CHAR_MIN -128
+#define INT_MAX 2147483647
+#define INT_MIN -2147483647
+#define LLONG_MAX 9223372036854775807
+#define LLONG_MIN -9223372036854775807
+#define LONG_BIT 32
+#define LONG_MAX 2147483647
+#define LONG_MIN -2147483647
+#define MB_LEN_MAX 16
+#define SCHAR_MAX 127
+#define SCHAR_MIN -128
+#define SHRT_MAX 32767
+#define SHRT_MIN -32767
+#define SSIZE_MAX 32767
+#define UCHAR_MAX 255
+#define UINT_MAX 4294967295
+#define ULLONG_MAX 18446744073709551615
+#define ULONG_MAX 4294967295
+#define USHRT_MAX 65535
+#define WORD_BIT 32
+
+/* Miscellaneous invariants */
+#define NL_ARGMAX 9
+#define NL_LANGMAX 14
+#define NL_MSGMAX 65535
+#define NL_SETMAX 255
+#define NL_TEXTMAX 8192
+#define NZERO 20
+
+#endif /* ndef _FLC_LIMITS */
--- a/projects/fenix/sysroot/usr/include/math.h
+++ b/projects/fenix/sysroot/usr/include/math.h
@ -0,0 +1,102 @@
+#ifndef _MATH_H
+#define _MATH_H
+
+#include <sys/types.h>
+
+#if FLT_EVAL_METHOD == 1
+typedef double float_t;
+typedef double double_t;
+#elseif FLT_EVAL_METHOD == 2
+typedef long double float_t;
+typedef long double double_t;
+#else
+typedef float float_t;
+typedef double double_t;
+#endif
+
+#define M_E 2.718281828
+#define M_PI 3.14159265
+#define PI 3.14159265
+#define M_PI_2 1.5707963268
+#define M_PI_4 0.7853981634
+#define M_1_PI 0.318309886184
+#define M_2_PI 0.636619772368
+#define M_2_SQRTPI 1.1283791671
+#define M_SQRT2 1.41421856237
+#define M_SQRT1_2 0.707106781187
+#define M_LOG2E 1.44269504089
+#define M_LOG10E 0.4342944819
+#define M_LN2 0.69314718056
+#define M_LN10 2.302585093
+
+double acos(double);
+float acosf(float);
+long double acosl(long double);
+
+double asin(double);
+float asinf(float);
+long double asinl(long double);
+
+double atan(double);
+float atanf(float);
+long double atanl(long double);
+
+double atan2(double);
+float atan2f(float);
+long double atan2l(long double);
+
+double cos(double);
+float cosf(float);
+long double cosl(long double);
+
+double sin(double);
+float sinf(float);
+long double sinl(long double);
+
+double tan(double);
+float tanf(float);
+long double tanl(long double);
+
+double acosh(double);
+float acoshf(float);
+long double acoshl(long double);
+
+double asinh(double);
+float asinhf(float);
+long double asinhl(long double);
+
+double atanh(double);
+float atanhf(float);
+long double atanhl(long double);
+
+double cosh(double);
+float coshf(float);
+long double coshl(long double);
+
+double sinh(double);
+float sinhf(float);
+long double sinhl(long double);
+
+double tanh(double);
+float tanhf(float);
+long double tanhl(long double);
+
+double exp(double);
+float expf(float);
+long double expl(double);
+
+double exp2(double);
+float exp2f(float);
+long double exp2l(double);
+
+double expm1(double);
+float expm1f(float);
+long double expm1l(double);
+
+double frexp(double, int *);
+float frexpf(float, int *);
+long double frexpl(double, int *);
+
+
+
+#endif
--- a/projects/fenix/sysroot/usr/include/stddef.h
+++ b/projects/fenix/sysroot/usr/include/stddef.h
@ -0,0 +1,24 @@
+/*
+  <stddef.h> - standard type definitions
+
+  This header is a part of fenlibc,
+  a component of the Fenix Operating System
+
+  This package is free software. Please see the
+  file COPYING in the source distribution for
+  more information.
+*/
+
+#ifndef _FLC_STDDEF
+#define _FLC_STDDEF
+
+#undef NULL
+#define NULL (void *) 0
+
+#define __need_ptrdiff_t
+#define __need_size_t
+#define __need_wchar_t
+
+#include <sys/types.h>
+
+#endif /* ndef _FLC_STDDEF */
--- a/projects/fenix/sysroot/usr/include/stdio.h
+++ b/projects/fenix/sysroot/usr/include/stdio.h
@ -0,0 +1,14 @@
+#ifndef _STDIO_H
+#define _STDIO_H
+
+#include <sys/cdefs.h>
+
+#define EOF (-1)
+
+int printf(const char * __restrict, ...);
+
+int putchar(int);
+
+int puts(const char *);
+
+#endif
--- a/projects/fenix/sysroot/usr/include/stdlib.h
+++ b/projects/fenix/sysroot/usr/include/stdlib.h
@ -0,0 +1,64 @@
+/*
+  <stdlib.h> - standard library definitions
+  
+  This header is a part of fenlibc,
+  a component of the Fenix Operating System.
+
+  This package is free software. Please see
+  the file COPYING in the source distribution
+  for more information.
+*/
+
+#ifndef _STDLIB_H
+#define _STDLIB_H
+
+#include <sys/cdefs.h>
+
+#ifndef NULL
+#define NULL (void *) 0
+#endif
+
+#define __need_size_t
+#define __need_wchar_t
+#include <sys/types.h>
+
+#define EXIT_FAILURE 1
+#define EXIT_SUCCESS 0
+
+#define RAND_MAX 32767
+
+#define MB_CUR_MAX (size_t) 1
+
+typedef struct _f_div_t {
+  int quot;
+  int rem;
+} div_t;
+
+typedef struct _f_ldiv_t {
+  long quot;
+  long rem;
+} ldiv_t;
+
+typedef struct _f_lldiv_t {
+  long long quot;
+  long long rem;
+} lldiv_t;
+
+__attribute__((__noreturn__))
+void abort(void);
+
+void srand(unsigned int);
+int rand(void);
+
+div_t div(int, int);
+ldiv_t ldiv(long, long);
+lldiv_t lldiv(long long, long long);
+
+int abs(int);
+long labs(long);
+long long llabs(long long);
+
+void * bsearch(const void *, const void *, size_t, size_t,
+	       int (*compar)(const void *, const void *));
+
+#endif
--- a/projects/fenix/sysroot/usr/include/string.h
+++ b/projects/fenix/sysroot/usr/include/string.h
@ -0,0 +1,15 @@
+#ifndef _STRING_H
+#define _STRING_H
+
+#include <sys/cdefs.h>
+
+#include <stddef.h>
+
+int memcmp(const void *, const void *, size_t);
+void * memcpy(void * __restrict, const void * __restrict, size_t);
+void * memmove(void *, const void *, size_t);
+void * memset(void *, int, size_t);
+
+size_t strlen(const char *);
+
+#endif
--- a/projects/fenix/sysroot/usr/include/sys/cdefs.h
+++ b/projects/fenix/sysroot/usr/include/sys/cdefs.h
@ -0,0 +1,6 @@
+#ifndef _SYS_CDEFS_H
+#define _SYS_CDEFS_H
+
+#define __fenix_libc 1
+
+#endif
--- a/projects/fenix/sysroot/usr/include/sys/types.h
+++ b/projects/fenix/sysroot/usr/include/sys/types.h
@ -0,0 +1,69 @@
+/*
+  <sys/types.h> - data types
+
+  This header is a part of fenlibc,
+  a component of the Fenix Operating System
+
+  This package is free software. Please see the
+  file COPYING in the source distribution for
+  more information.
+*/
+
+#ifndef _SYS_TYPES_H
+#define _SYS_TYPES_H
+
+#ifndef _FLC_ALLTYPES
+#define _FLC_ALLTYPES
+
+#ifdef __need_locale_t
+#ifndef __have_locale_t
+#define __have_locale_t
+typedef struct _locale_t {
+  
+} locale_t;
+#endif
+#endif
+
+#ifdef __need_ptrdiff_t
+#ifndef __have_ptrdiff_t
+#define __have_ptrdiff_t
+typedef signed int ptrdiff_t;
+#endif
+#endif
+
+#ifdef __need_size_t
+#ifndef __have_size_t
+#define __have_size_t
+typedef unsigned int size_t;
+#endif
+#endif
+
+#ifdef __need_wchar_t
+#ifndef __have_wchar_t
+#define __have_wchar_t
+typedef int wchar_t;
+#endif
+#endif
+
+#ifdef __need_id_t
+#ifndef __have_id_t
+#define __have_id_t
+typedef int id_t;
+#endif
+#endif
+
+#ifdef __need_gid_t
+#ifndef __have_gid_t
+#define __have_gid_t
+typedef unsigned id_t gid_t;
+#endif
+#endif
+
+#ifdef __need_uid_t
+#ifndef __have_uid_t
+#define __have_uid_t
+typedef unsigned id_t uid_t;
+#endif
+#endif
+
+#endif /* not _HEADER */
--- a/stdio/perror.c
+++ b/stdio/perror.c
@ -0,0 +1,7 @@
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+void perror(const char * str) {
+  fprintf(stderr, "%s: %s\n", str, strerror(errno));
+}
--- a/stdlib/abs.c
+++ b/stdlib/abs.c
@ -0,0 +1,6 @@
+#include <stdlib.h>
+
+int abs(int x) {
+  int y = x < 0 ? -x : x;
+  return y;
+}
--- a/stdlib/div.c
+++ b/stdlib/div.c
@ -0,0 +1,8 @@
+#include <stdlib.h>
+
+div_t div(int x, int y) {
+  div_t ret_val;
+  ret_val.quot = x / y;
+  ret_val.rem  = x % y;
+  return ret_val;
+}
--- a/stdlib/labs.c
+++ b/stdlib/labs.c
@ -0,0 +1,6 @@
+#include <stdlib.h>
+
+long int labs(long int x) {
+  long int y = x < 0 ? -x : x;
+  return y;
+}
--- a/stdlib/ldiv.c
+++ b/stdlib/ldiv.c
@ -0,0 +1,8 @@
+#include <stdlib.h>
+
+ldiv_t ldiv(long int x, long int y) {
+  ldiv_t ret_val;
+  ret_val.quot = x / y;
+  ret_val.rem  = x % y;
+  return ret_val;
+}
--- a/stdlib/llabs.c
+++ b/stdlib/llabs.c
@ -0,0 +1,6 @@
+#include <stdlib.h>
+
+long long int llabs(long long int x) {
+  long long int y = x < 0 ? -x : x;
+  return y;
+}
--- a/stdlib/lldiv.c
+++ b/stdlib/lldiv.c
@ -0,0 +1,8 @@
+#include <stdlib.h>
+
+lldiv_t lldiv(long long int x, long long int y) {
+  lldiv_t ret_val;
+  ret_val.quot = x / y;
+  ret_val.rem  = x % y;
+  return ret_val;
+}
--- a/stdlib/rand.c
+++ b/stdlib/rand.c
@ -0,0 +1,64 @@
+/*
+ * This rand() implementation is based on the Mersenne Twister.
+ * Specifically, it's a C implementation of the pseudocode
+ * implementation that can be found on the Wikipedia article for
+ * the Mersenne Twister.
+ *
+ * Did we have to do a Mersenne Twister? No. No, we did not.
+ * Did we? Fuck yes, we did.
+ *
+ * Love,
+ *   Kat
+ */
+
+#include <stdlib.h>
+
+static int _rand_state[624] = { 0 };
+static unsigned int _rand_seed = 5489;
+static int _rand_index = 625;
+
+void _rand_init(unsigned int seed) {
+  _rand_index = 624;
+  _rand_state[0] = seed;
+  int i = 0;
+  for(i = 1; i < 624; i++) {
+    _rand_state[i]  = 1812433253 ;
+    _rand_state[i] *= _rand_state[i-1] ^ (_rand_state[i-1] >> 30);
+    _rand_state[i] += i;
+  }
+}
+
+void _rand_twist() {
+  int i = 0, x, xA;
+  for(i = 0; i < 624; i++) {
+    x = _rand_state[i] & 0xFFFF0000 + (_rand_state[(i + 1) % 624] & 0xFFFF);
+    xA = x % 2 == 0 ? x >> 1 : (x >> 1) ^ 0x9908B0DF;
+    _rand_state[i] = _rand_state[(i + 397) % 624] ^ xA;
+  }
+  _rand_index = 0;
+}
+
+int rand(void) {
+  int y;
+  if(_rand_index > 624) {
+    _rand_init(_rand_seed);
+  }
+
+  if(_rand_index >= 624) {
+    _rand_twist();
+  }
+
+  y = _rand_state[_rand_index];
+  y ^= y >> 11;
+  y ^= (y << 7) & 0x9D2C5680;
+  y ^= (y << 15) & 0xEFC60000;
+  y ^= (y >> 18);
+
+  _rand_index++;
+  return y % RAND_MAX;
+}
+
+void srand(unsigned int seed) {
+  _rand_seed = seed;
+  _rand_index = 625;
+}
--- a/string/strcat.c
+++ b/string/strcat.c
@ -0,0 +1,36 @@
+#include <string.h>
+
+/*
+  Is this...okay? Like, from what I can tell, it should be,
+  since s1 and s2 are restricted. s1 and s2 shouldn't be the
+  same object. But, like, I'm worried about what happens if
+  someone passes in the same pointer for s1 and s2. You'd get
+  an infinite loop of adding stuff that just eats up all
+  memory from there! But, like, I think musl does the same
+  thing? I really can't tell. For now, I'm gonna assume I've
+  done this acceptably.
+  For now.
+  -Kat
+*/
+
+/*
+  I'm pretty sure musl does the same thing, for the most part.
+  -Kat
+*/
+
+/*
+  Does weird stuff. Maybe don't use until we figure out what
+  the fuck is wrong with it.
+  -Kat
+ */
+
+char * strcat(char * restrict s1, const char * restrict s2) {
+  int i = 0, j;
+  for(i = 0; s1[i] != '\0'; i++){}
+  for(j = 0; s2[j] != '\0'; i++, j++) {
+    s1[i] = s2[j];
+  }
+  s1[i] = '\0';
+
+  return s1;
+}
--- a/string/strcmp.c
+++ b/string/strcmp.c
@ -0,0 +1,12 @@
+#include <string.h>
+
+int strcmp(const char * s1, const char * s2) {
+  size_t i = 0;
+  while(s1[i] != '\0' && s2[i] != '\0') {
+    if(s1[i] != s2[i]) {
+      return s1[i] - s2[i];
+    }
+    i++;
+  }
+  return s1[i] - s2[i];
+}
--- a/string/strcspn.c
+++ b/string/strcspn.c
@ -0,0 +1,22 @@
+#include <string.h>
+
+/*
+  This might need to be rewritten. It does grow as
+  O(m*n), where m and n are the number of characters
+  in s2 and s1. If I do, musl's implementation is
+  kinda cool. I could do something like that. But,
+  I think it'll do for now.
+  -Kat
+*/
+
+size_t strcspn(const char * s1, const char * s2) {
+  int i = 0;
+  for(i = 0; s1[i] != '\0'; i++) {
+    for(int j = 0; s2[j] != '\0'; j++) {
+      if(s1[i] == s2[j]) {
+	return i;
+      }
+    }
+  }
+  return i;
+}
--- a/string/strtok.c
+++ b/string/strtok.c
@ -0,0 +1,30 @@
+#include <string.h>
+
+char * strtok(char * restrict str, char * restrict sep) {
+  static char * state;
+  char * search_str;
+  int i = 0, sep_size = strlen(sep);
+
+  if(str != NULL) {
+    search_str = str;
+  }
+  else {
+    search_str = state;
+  }
+
+  while(*search_str != '\0' && strcmp(search_str, sep) == 0) {
+    search_str += sep_size;
+  }
+
+  if(*search_str == '\0') {
+    return NULL;
+  }
+
+  while(search_str[i] != '\0' && strcmp(&(search_str[i]), sep) != 0) {
+    i++;
+  }
+
+  search_str[i] = '\0';
+  state = &(search_str[i + 1]);
+  return search_str;
+}
--- a/time/time.c
+++ b/time/time.c
@ -0,0 +1,39 @@
+#include <time.h>
+
+#ifdef __is_libk
+#include <kernel/cmos.h>
+#endif
+
+unsigned int get_days(unsigned int year, unsigned char month, unsigned char day) {
+  unsigned int tot_days = day - 1;
+  unsigned char month_days[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+  for(unsigned int i = 1970; i < year; i++) {
+    if(i % 400 == 0 || (i % 100 != 0 && i % 4 == 0)) {
+      tot_days += 366;
+    }
+    else {
+      tot_days += 365;
+    }
+  }
+
+  for(int i = 0; i < (month - 1); i++) {
+    tot_days += month_days[i];
+  }
+
+  return tot_days;
+}
+
+time_t time(time_t * tloc) {
+  time_t ret_val;
+  
+  #ifdef __is_libk
+  ret_val = read_rtc();
+  #else
+  /* TODO: Implement system calls for this stuff */
+  #endif
+
+  if(tloc != 0) {
+    *tloc = ret_val;
+  }
+  return ret_val;
+}