abort(3) abort: generate a fault.
abs(3) abs: integer absolute value.
assert(3x) assert: program verification.
atof(3) atof, atoi, atol: convert ASCII to numbers.
crypt(3) crypt, setkey, encrypt: DES encryption.
ctime(3) ctime, localtime, gmtime, asctime, timezone: convert date and time to ASCII.
ctype(3) isalpha, isupper, islower, isdigit, isalnum, isspace, ispunct, isprint, iscntrl, isascii: character classification.
curses(3) curses: screen functions with ``optimal'' cursor motion.
dbm(3x) dbminit, fetch, store, delete, firstkey, nextkey: data base subroutines.
directory(3s) opendir, readdir, telldir, seekdir, rewinddir, closedir: flexible length directory operations.
end(3) end, etext, edata: last locations in program.
epdtoadr(3) epdtoadr: convert external procedure descriptor to absolute address.
exp(3m) exp, log, log10, pow, sqrt: exponential, logarithm, power, square root.
fclose(3s) fclose, fflush: close or flush a stream.
ferror(3s) feof, ferror, clearerr, fileno: stream status inquiries.
floor(3m) fabs, floor, ceil: absolute value, floor, ceiling functions.
fopen(3s) fopen, freopen, fdopen: open a stream.
fread(3s) fread, fwrite: buffered binary input/output.
frexp(3) frexp, ldexp, modf: split into mantissa and exponent.
fseek(3s) fseek, ftell, rewind: reposition a stream.
gamma(3m) gamma: log gamma function.
getc(3s) getc, getchar, fgetc, getw: get character or word from stream.
getenv(3) getenv: value for environment name.
getfsent(3) getfsent, getfsspec, getfsfile, setfsent, endfsent: get file system descriptor file entry.
getgrent(3) getgrent, getgrgid, getgrnam, setgrent, endgrent: get group file entry.
getlogin(3) getlogin: get login name.
getpass(3) getpass: read a password.
getpw(3) getpw: get name from uid.
getpwent(3) getpwent, getpwuid, getpwnam, setpwent, endpwent: get password file entry.
gets(3s) gets, fgets: get a string from a stream.
hypot(3m) hypot, cabs: Euclidean distance.
intro(3) intro: introduction to library functions.
j0(3m) j0, j1, jn, y0, y1, yn: bessel functions.
jobs(3j) jobs: summary of job control facilities.
l3tol(3) l3tol, ltol3: convert between 3-byte integers and long integers.
malloc(3) malloc, free, realloc, calloc: main memory allocator.
mktemp(3) mktemp: make a unique file name.
monitor(3) monitor: prepare execution profile.
nlist(3) nlist: get entries from name list.
openp(3x) openp, fopenp: open file using search path.
perror(3) perror, sys_errlist, sys_nerr: system error messages.
plot(3x) plot: openpl et al.: graphics interface.
popen(3s) popen, pclose: initiate I/O to/from a process.
printf(3s) printf, fprintf, sprintf: formatted output conversion.
putc(3s) putc, putchar, fputc, putw: put character or word on a stream.
puts(3s) puts, fputs: put a string on a stream.
qsort(3) qsort: quicker sort.
rand(3) rand, srand: random number generator.
regex(3) re_comp, re_exec: regular expression handler.
scandir(3) scandir: scan a directory.
scanf(3s) scanf, fscanf, sscanf: formatted input conversion.
setbuf(3s) setbuf: assign buffering to a stream.
setjmp(3) setjmp, longjmp: non-local goto.
sigset(3) sigset, signal, sighold, sigignore, sigrelse, sigpause: manage signals.
sin(3m) sin, cos, tan, asin, acos, atan, atan2: trigonometric functions.
sinh(3m) sinh, cosh, tanh: hyperbolic functions.
sleep(3) sleep: suspend execution for interval.
stdio(3s) stdio: standard buffered input/output package.
string(3) strcat, strncat, strcmp, strncmp, strcpy, strncpy, strlen, index, rindex: string operations.
swab(3) swab: swap bytes.
system(3) system: issue a shell command.
termcap(3) tgetent, tgetnum, tgetflag, tgetstr, tgoto, tputs: terminal independent operation routines.
ttyname(3) ttyname, isatty, ttyslot: find name of a terminal.
ungetc(3s) ungetc: push character back into input stream.
valloc(3) valloc: aligned memory allocator.
varargs(3) varargs: variable argument list.
walkdir(3) walkdir: recursively find files in a directory hierarchy.
