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 abort()               Abort Process and Return Error
 abs()                 Calculate Absolute Value of Integer
 access()              Check File Permission Setting
 acos()                Calculate ArcCosine
 acosl()               Calculate Long Double ArcCosine
 asctime()             Converts Time from Structure to String
 asin()                Calculate Arcsine
 asinl()               Calculate Long Double ArcSine
 assert()              Diagnostic Message Generator
 atan()                Calculate Arctangent
 atanl()               Calculate Long Double ArcTangent
 atan2()               Calculate Arctangent of y/x
 atan2l()              Calculate Long Double ArcTangent of y/x
 atof()                Convert String to Double
 atexit()              Register Terminating Function
 atoi()                Convert String to Integer
 atol()                Convert String to Long
 _atold()              Convert String to Long Double
 _beginthread()        Create a Thread (OS/2)
 bessel()              Return Result of a Bessel Function of x
 bsearch()             Performs Binary Search
 cabs()                Calculate Absolute Value of Complex Number
 cabsl()               Calculate Long Double Abs Value of a Complex Number
 ceil()                Calculate Ceiling of Value
 ceill()               Calculate Long Double Ceiling Value
 _cexit()              Perform Exit Procedures Without Exiting
 _c_exit()             Perform _exit Procedures Without Exiting
 cgets()               Get a Character String From the Console
 _chain_intr()         Chain Interrupt Handlers
 chdir()               Change Current Working Directory
 _chdrive()            Change Current Drive
 chmod()               Change File Permission Setting
 chsize()              Change Size of File
 _clear87()            Get and Clear 8087/80287 Status Word
 clearerr()            Clear Error Indicator for a Stream
 clock()               Returns elapsed CPU time
 close()               Close File
 _control87()          Get and Set 8087/80287 Status Word
 cos()                 Calculate Cosine
 cosh()                Calculate Hyperbolic Cosine
 coshl()               Calculate Long Double Hyperbolic Cosine
 cosl()                Calculate Long Double Cosine
 cprintf()             Formatted Write to Console
 cputs()               Write a String to the Console
 creat()               Create a New File
 cscanf()              Read Formatted Data from Console
 ctime()               Convert Time from Long Integer to String
 cwait()               Suspend calling process until child terminates
 dieeetomsbin()        Convert IEEE Double to MS Binary Double
 dmsbintoieee()        Convert Double MS Binary to IEEE Double
 difftime()            Find the Difference between Two Times
 _disable()            Disable interrupts
 div()                 Divides integers
 dup()                 Create Second Handle for Open File
 dup2()                Reassign a File Handle
 ecvt()                Convert Double to String
 _enable()             Enables interrupts
 _endthread()          End a Thread (OS/2)
 eof()                 Test for End of File
 exec...()             An Overview of the Eight Exec Functions
 execl()               Execute Program Using: Arg List
 execle()              Execute Program Using: Arg List, Environment
 execlp()              Execute Program Using: Arg List, PATH
 execlpe()             Execute Program Using: Arg
 execv()               Execute Program Using: Arg Array
 execve()              Execute Program Using: Arg Array, Environment
 execvp()              Execute Program Using: Arg Array, PATH
 execvpe()             Execute Program Using: Arg
 exit()                Terminate Process after Cleanup
 _exit()               Terminate Process without Cleanup
 exp()                 Calculate Exponential
 expl()                Calculate Long Double Exponential
 fabs()                Calculate Absolute Value of Floating Point
 fabsl()               Calculate Long Double Absolute Value of Floating Point
 fclose()              Close a Stream
 fcloseall()           Close All Open Streams
 fcvt()                Convert Double to String
 fdopen()              Open a Stream Using a Handle
 feof()                Detect Stream End-of-File (Macro)
 ferror()              Test for Error on a Stream (Macro)
 fflush()              Flush a Stream
 fgetc()               Read a Character from a Stream
 fgetchar()            Read a Character from Stdin
 fgetpos()             Get stream position indicator
 fgets()               Read a String from Stream
 fieeetomsbin()        Convert IEEE Single-Precision to MS Binary
 filelength()          Return File Length
 fileno()              Get File Handle Associated with Stream (Macro)
 floor()               Calculate Floor of Value
 floorl()              Calculate Floor of Long Double Value
 flushall()            Flush All Streams and Clear All Buffers
 fmod()                Calculate Floating-Point Remainder
 fmodl()               Calculate Long Double Floating Point Remainder
 fmsbintoieee()        Convert MS Binary Single-Precision to IEEE
 fopen()               Open a File
 FP_OFF()              Get or Set Offset Portion of Far Pointer (Macro)
 FP_SEG()              Get or Set Segment Portion of Far Pointer (Macro)
 _fpreset()            Reinitialize Floating-Point Math Package
 fprintf()             Write Formatted Data to Stream
 fputc()               Write a Character to a Stream
 fputchar()            Write a Character to Stdout
 fputs()               Write a String to Stream
 fread()               Read Unformatted Data from Stream
 freopen()             Reassign a File Pointer
 frexp()               Get Mantissa and Exponent of Floating-Point Value
 frexpl()              Long Double Precision frep()
 fscanf()              Read Formatted Data from Screen
 fseek()               Reposition File Pointer to Given Location
 fsetpos()             Set Stream Position Indicator
 _fsopen()             Open File as a Stream
 fstat()               Get Information about Open File
 _fstrcat()            Append a String (Model Independent)
 _fstrchr()            Find a Character in a String (Model Independent)
 _fstrcmp()            Compare Two Strings (Model Independent)
 _fstrcpy()            Copy One String to Another (Model Independent)
 _fstrcspn()           Scan One String for Another (Model Independent)
 _fstrdup()            Duplicate String (Model Independent)
 _fstricmp()           Compare Two Strings (Model, Case Independent)
 _fstrlen()            Get String Length (Model Independent)
 _fstrlwr()            Convert String to Lower Case (Model Independent)
 _fstrncat()           Append n Characters (Model Independent)
 _fstrncmp()           Compare n Characters (Model Independent)
 _fstrncpy()           Copy n Characters (Model Independent)
 _fstrnicmp()          Compare n Characters (Model, Case Independent)
 _fstrnset()           Initialize n Characters (Model Independent)
 _fstrpbrk()           Scan for Char From Set (Model Independent)
 _fstrrchr()           Find Last Occurance of Char (Model Independent)
 _fstrrev()            Reverse a String (Model Independent)
 _fstrset()            Set Characters in String (Model Independent)
 _fstrspn()            Find First Substring (Model Independent)
 _fstrstr()            Find Substring (Model Independent)
 _fstrtok()            Finds Next Token in String (Model Independent)
 _fstrupr()            Convert to Upper Case (Model Independent)
 ftell()               Get Current File Pointer Position
 ftime()               Get Current System Time as Structure
 _fullpath()           Get Full Pathname
 fwrite()              Write Unformatted Data to Stream
 gcvt()                Convert Double to String
 getc()                Read a Character from a Stream (Macro)
 getchar()             Read a Character from 'Stdin'
 getch()               Get a Character from the Console without Echo
 getche()              Get a Character from Console with Echo
 getcwd()              Get Path Name of Current Working Directory
 _getdcwd()            Get Pathname of Current Directory Including Drive
 getenv()              Get a Value from the Environment Table
 _getdrive()           Get Current Working Drive
 getpid()              Get Process ID
 gets()                Read a Line from 'Stdin'
 getw()                Read an Integer from a Stream
 gmtime()              Convert Time from Long Integer to Structure
 _harderr()            Install new hardware error handler
 _hardresume()         Return to DOS after a hardware error
 _hardretn()           Return to Application After Hardware Error
 hypot()               Calculate the Hypotenuse of a Right Triangle
 hypotl()              Calclulate Long Double Hypotenuse
 inp()                 Read a Byte from the Specified Port
 inpw()                Read word from I/O port
 isalnum()             Test for Alphanumeric Character (Macro)
 isalpha()             Test for Alphabetic Character (Macro)
 isascii()             Test for ASCII Character (Macro)
 isatty()              Check for Character Device
 iscntrl()             Test for Control Character (Macro)
 isdigit()             Test for Digit (Macro)
 isgraph()             Test for Printable Character Except Space (Macro)
 islower()             Test for Lowercase (Macro)
 isprint()             Test for Printable Character (Macro)
 ispunct()             Test for Punctuation Character (Macro)
 isspace()             Test for White-Space Character (Macro)
 isupper()             Test for Uppercase (Macro)
 isxdigit()            Test for Hexadecimal Digit (Macro)
 itoa()                Convert Integer to String
 kbhit()               Check Keyboard Input Buffer for Character Waiting
 labs()                Calculate Absolute Value of Long Integer
 ldexp()               Convert Mantissa and Exponent to Floating Point
 ldexpl()              Convert Mantissa and Exponent into Long Double
 ldiv()                Divides long integers
 lfind()               Linear Search for Key
 localeconv()          Get Locale Setting Information
 localtime()           Convert Time from Long to Structure-Local Correc.
 locking()             Lock Areas of File
 log()                 Calculate Natural Logarithm
 logl()                Calculate Long Double Natural Logarithm
 log10()               Calculate Base 10 Logarithm
 log10l()              Calculate Long Double Base 10 Logarithm
 longjmp()             Restore Program State
 _lrotl()              Shift a Long Int to the Left
 _lrotr()              Shift a Long Int to the Right
 lsearch()             Perform Linear Search
 lseek()               Reposition File Pointer to Specified Location
 ltoa()                Convert Long to String
 _makepath()           Make Path Name from Components
 matherr()             Handle Math Error
 _matherrl()           Handle Long Double Math Error
 max()                 Return the Larger of Two Arguments (Macro)
 min()                 Return the Smaller of Two Arguments (Macro)
 mkdir()               Create a New Directory
 mktemp()              Create a Unique File Name
 mktime()              Convert Time to Calendar Value
 modf()                Split Floating Point into Mantissa and Exponent
 _modfl()              Split Long Double in Mantissa and Exponent
 movedata()            Copy Characters to a Different Segment
 _nstrdup()            Duplicate String (Model Independent)
 onexit()              Register Terminating Function
 open()                Open a File
 outp()                Write a Byte to the Specified Port
 outpw()               Write Word to I/O Port
 _pclose()             Close a Stream (OS/2)
 perror()              Print Error Message
 _pipe()               Create a Pipe (OS/2)
 _popen()              Open a Stream (OS/2)
 pow()                 Calculate X Raised to the Yth Power
 powl()                Calculate Long Double X Raised to the Yth Power
 printf()              Write Formatted String to Stdout
 putc()                Write a Character to Stream (Macro)
 putchar()             Write a Character to Stdout (Macro)
 putch()               Write a Character to the Console
 putenv()              Create New Environment Variables
 puts()                Write String to Stdout
 putw()                Write an Integer to Stream
 qsort()               Perform Quick Sort
 raise()               Send a Signal to Executing Program
 rand()                Get Pseudorandom Integer
 read()                Read Data from File
 remove()              Delete A File
 rename()              Rename a File or Directory
 rewind()              Reposition File Pointer to Beginning of Stream
 rmdir()               Remove a Directory
 rmtmp()               Remove Temporary File Created by tempfile()
 _rotl()               Shift an Int to the Left
 _rotr()               Shift an Int to the Right
 sbrk()                Reset Break Value for Calling Process
 scanf()               Read Formatted Data from Stdin
 _searchenv()          Searches for a file using a path
 segread()             Return Current Values of Segment Registers
 setbuf()              Control Stream Buffering
 setjmp()              Save Program State
 setlocale()           Set the Locale
 setmode()             Set File-Translation Mode
 setvbuf()             Control Stream Buffering and Buffer Size
 signal()              Set Interrupt Signal Handling
 sin()                 Calculate Sine
 sinh()                Calculate Hyperbolic Sine
 sinhl()               Calculate Long Double Hyperbolic Sine
 sinl()                Calculate Long Double Sine
 sopen()               Open A File for File Sharing
 spawn...()            An Overview of the Eight Spawn Functions
 spawnl()              Execute Program Using: Arg List
 spawnle()             Execute Program Using: Arg List, Environment
 spawnlp()             Execute Program Using Arg List, PATH
 spawnlpe()            Execute Program Using Arg List, PATH, Environment
 spawnv()              Execute Program Using Arg Array
 spawnve()             Execute Program Using Arg Array, Environment
 spawnvp()             Execute Program Using Arg Array, PATH
 spawnvpe()            Execute Program Using Arg Array,PATH,Environment
 _splitpath()          Split Path Name into Components
 sprintf()             Write Formatted Data to String
 sqrt()                Calculate Square Root
 sqrtl()               Calculate Long Double Square Root
 srand()               Set Random Starting Point
 sscanf()              Read Formatted Data from String
 stat()                Get File-Status Information on Named File
 _status87()           Get 8087/80287 Floating-Point Status Word
 strcat()              Append a String
 strchr()              Find a Character in a String
 strcmp()              Compare Two Strings, Case Sensitive
 strcmpi()             Compare Two Strings, Case Insensitive
 strcoll()             Compare Strings in Locale-Specific Way
 strcpy()              Copy One String to Another
 strcspn()             Scan One String for Another
 _strdate()            Copy System Date to String
 strdup()              Duplicate String
 strerror()            Save System Error Message
 _strerror()           Save System Error Message
 strftime()            Format Time Value into a String
 stricmp()             Compare Two Strings, Case Insensitive
 strlen()              Get String Length
 strlwr()              Convert String to Lower Case
 strncat()             Append Specified Number of Characters to a String
 strncmp()             Compare n Characters of 2 Strings, Case Sensitive
 strnicmp()            Compare n Characters of Strings, Case Insensitive
 strncpy()             Copy a Specified Number of Characters
 strnset()             Initialize n Characters of String
 strpbrk()             Scan String for Character from Character Set
 strrchr()             Scan String for Last Occurrence of Character
 strrev()              Reverse Characters in String
 strset()              Set All Characters in String
 strspn()              Find First Substring
 strstr()              Find Substring
 _strtime()            Copy System Time to String
 strtod()              Convert String to Double
 strtok()              Finds Next Token in String
 strtol()              Convert String to Long Decimal Integer
 _strtold()            Convert String to Long Double
 strtoul()             Convert String to Unsigned Long
 strupr()              Convert String to Uppercase
 strxfrm()             Translate String According to Locale
 swab()                Swap Bytes
 system()              Execute DOS Command
 tan()                 Calculate Tangent
 tanh()                Calculate Hyperbolic Tangent
 tanhl()               Calculate Long Double Hyperbolic Tangent
 tanl()                Calculate Long Double Tangent
 tell()                Get Current File Pointer Position
 tempnam()             Generate a Temporary File Name in Given Directory
 time()                Get Current System Time as Long Integer
 tmpfile()             Create a Temporary File
 tmpnam()              Generate a Temporary File Name
 toascii()             Convert 'c' to ASCII Character (Macro)
 tolower()             Convert 'c' to lowercase, if Appropriate (Macro)
 _tolower()            Convert 'c' to Lowercase (Macro)
 toupper()             Convert 'c' to Uppercase, if Appropriate (Macro)
 _toupper()            Convert 'c' to Uppercase (Macro)
 tzset()               Set External Time and Environment Variables
 ultoa()               Convert Unsigned Long to String
 umask()               Set Default Permission Mask
 ungetc()              Push Character Back onto the Stream
 ungetch()             Push Back Last Character Read from the Console
 unlink()              Delete a File
 utime()               Set File-Modification Time
 va_arg()              Access Variable Number of Arguments, UNIX V Style
 va_arg()              Access Variable Number of Arguments, ANSI C Style
 va_end()              Resets arg_ptr to NULL
 va_start()            Sets arg_ptr to First Optional Argument
 vfprintf()            Write Formatted Data to Stream
 vprintf()             Write Formatted Data to Stdout
 vsprintf()            Write Formatted Data to String
 wait()                Suspend Calling Process Until Child Terminates
 write()               Write Data to a File