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Functions

This is a summary of ANSI and POSIX functions grouped by library. If you want an alphabetical list, please use the master index. Please refer to a manual for a complete list of functions available to you.

ANSI standard library.

The ANSI library is declared in the following header files.

assert.h ctype.h errno.h float.h limits.h
locale.h math.h setjmp.h signal.h stdarg.h
stddef.h stdio.h stdlib.h string.h time.h

POSIX library

The POSIX library contains the following headers.

cpio.h dirent.h fcntl.h grp.h pwd.h
sys/stat.h sys/times.h sys/types.h sys/utsname.h sys/wait.h
tar.h termios.h unistd.h utime.h

ANSII Library headers

assert.h

ctype.h

errno.h

float.h

No functions are declared in stddef.h.

limits.h

No functions are declared in stddef.h.

locale.h

math.h

Note

For some reason abs is in stdlib.h

setjmp.h

signal.h

stdarg.h

See also vprintf vfprintf and vsprintf which all print the contents of a va_list

stddef.h

No functions are declared in stddef.h.

stdio.h

This header defines all the ANSI I/O functions that allow you to read and write to files and devices. Low level (non ANSI) functions are also available.

stdlib.h

string.h

time.h

POSIX functions start here....

cpio.h

dirent.h

fcntl.h

grp.h

pwd.h

sys/stat.h

sys/times.h

sys/types.h

sys/utsname.h

sys/wait.h

tar.h

termios.h

unistd.h

It seems that this library contains headers for many functions that originally came with the ANSII standard library but did not have headers. My documentation for this POSIX library is incomplete.

utime.h

conio.h

Dos Specific functions in conio.h Not very portable as conio.h is NOT in the ANSI standard library and does not appear on the Sun or Linux machines.

Non ANSI Standard Unix Functions.

These functions are not in the ANSI standard libraries but are handy all the same.

Ungrouped functions