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abort(3)
generate IOT fault
abs(3)
integer absolute value
atof(3), atoi(3), atol(3)
convert ASCII to numbers
crypt(3), setkey(3), encrypt(3)
DES encryption
ctime(3), localtime(3), gmtime(3), asctime(3), timezone(3)
convert date and time to ASCII
ctype(3), isalpha(3), isupper(3), islower(3), isdigit(3), isalnum(3), isspace(3), ispunct(3), isprint(3), iscntrl(3), isascii(3)
character classification
diff3(1)
3-way differential file comparison
ecvt(3), fcvt(3), gcvt(3)
output conversion
end(3), etext(3), edata(3)
last locations in program
frexp(3), ldexp(3), modf(3)
split into mantissa and exponent
getenv(3)
value for environment name
getgrent(3), getgrgid(3), getgrnam(3), setgrent(3), endgrent(3)
get group file entry
getlogin(3)
get login name
getpass(3)
read a password
getpw(3)
get name from UID
getpwent(3), getpwuid(3), getpwnam(3), setpwent(3), endpwent(3)
get password file entry
intro(3)
introduction to library functions
l3tol(3), ltol3(3)
convert between 3-byte integers and long integers
malloc(3), free(3), realloc(3), calloc(3)
main memory allocator
mktemp(3)
make a unique file name
monitor(3)
prepare execution profile
nlist(3)
get entries from name list
perror(3), sys_errlist(3), sys_nerr(3)
system error messages
pkopen(3), pkclose(3), pkread(3), pkwrite(3), pkfail(3)
packet driver simulator
qsort(3)
quicker sort
rand(3), srand(3)
random number generator
setjmp(3), longjmp(3)
non-local goto
sleep(3)
suspend execution for interval
string(3), strcat(3), strncat(3), strcmp(3), strncmp(3), strcpy(3), strncpy(3), strlen(3), index(3), rindex(3)
string operations
swab(3)
swap bytes
system(3)
issue a shell command
ttyname(3), isatty(3), ttyslot(3)
find name of a terminal
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