ChorusOS man pages section 3STDC: Standard C Library Functions

Intro(3STDC)

NAME

Intro, intro- introduction to functions and libraries

DESCRIPTION

This section describes threadsafe C library functions. Function prototypes can be obtained from the #include files indicated on each page.

References of the form name (2K), name (2POSIX), name (3POSIX) and name (3STDC) refer to pages in this section of this document.

DEFINITIONS

A character is any bit pattern able to fit into a byte on the machine. The null character is a character with value 0, conventionally represented in the C language as \0. A character array is a sequence of characters. A null-terminated character array (a string ) is a sequence of characters, the last of which is the null character. The null string is a character array containing only the terminating null character. A NULL pointer is the value that is obtained by casting 0 into a pointer. C guarantees that this value will not match any legitimate pointer, so many functions that return pointers return NULL to indicate an error. The macro NULL is defined in stdio.h .

NOTES

Routines from (2POSIX), (3POSIX), (3STDC) are suitable for being linked and invoked in any actor, whether it is an embedded user or supervisor actor, or a c_actor. Routines from (3STDC) provide the traditional UNIX level 3 IO service. These routines assume the existence of a subset of the UNIX IO level 2 interface.

STANDARDS

All (2POSIX), (3POSIX) and (3STDC) routines that have a definition in POSIX.1c, POSIX.1b, or ANSI-C, conform to that definition, in this decreasing order of priority. In particular, almost all routines are reentrant. Those routines that are not reentrent are signaled in the corresponding manual page, and the POSIX.1c reentrent replacement is provided.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Evolving

Name: Description
_assert(3STDC): See assert(3STDC)
_ldexp(3STDC): See ldexp(3STDC)
_stdc_assert(3STDC): See assert(3STDC)
abort(3STDC): cause abnormal program termination
abs(3STDC): integer absolute value function
alphasort(3STDC): See scandir(3STDC)
asctime(3STDC): See ctime(3STDC)
asctime_r(3STDC): See ctime_r(3STDC)
assert(3STDC): expression verification macro
atexit(3STDC): add program termination routines
atof(3STDC): See strtod(3STDC)
atoi(3STDC): See strtol(3STDC)
atol(3STDC): See strtol(3STDC)
bcmp(3STDC): See bstring(3STDC)
bcopy(3STDC): See bstring(3STDC)
bsearch(3STDC): perform a binary search on a sorted table
bstring(3STDC): bit and byte string operations
byteorder(3STDC): convert values between host and network byte order
bzero(3STDC): See bstring(3STDC)
calloc(3STDC): See malloc(3STDC)
clearerr(3STDC): See ferror(3STDC)
ctime(3STDC): transform binary date and time value to ASCII
ctime_r(3STDC): Transform binary date and time value to ASCII; Reentrent version
ctype(3STDC): classify characters
difftime(3STDC): See ctime(3STDC)
div(3STDC): return quotient and remainder from division
errno(3STDC): See perror(3STDC)
exit(3STDC): terminate an actor
fabs(3STDC): floating-point absolute value function
fclose(3STDC): close or flush a stream
fdopen(3STDC): See fopen(3STDC)
feof(3STDC): See ferror(3STDC)
ferror(3STDC): stream status inquiries
fflush(3STDC): See fclose(3STDC)
ffs(3STDC): See bstring(3STDC)
fgetc(3STDC): See getc(3STDC)
fgetpos(3STDC): See fseek(3STDC)
fgets(3STDC): See gets(3STDC)
fileno(3STDC): See ferror(3STDC)
flockfile(3STDC): stream lock management
fopen(3STDC): open a stream
fprintf(3STDC): print formatted output
fputc(3STDC): See putc(3STDC)
fputs(3STDC): See puts(3STDC)
fread(3STDC): binary input/output
free(3STDC): See malloc(3STDC)
freopen(3STDC): See fopen(3STDC)
fscanf(3STDC): convert formatted input
fseek(3STDC): reposition a file pointer in a stream
fsetpos(3STDC): See fseek(3STDC)
ftell(3STDC): See fseek(3STDC)
ftrylockfile(3STDC): See flockfile(3STDC)
funlockfile(3STDC): See flockfile(3STDC)
fwrite(3STDC): See fread(3STDC)
getc(3STDC): get character from a stream
getc_unlocked(3STDC): See unlocked(3STDC)
getchar(3STDC): get character from the standard input channel
getchar_unlocked(3STDC): See unlocked(3STDC)
getenv(3STDC): fetch and set environment variables
gethostbyaddr(3STDC): get network host entry
gethostbyname(3STDC): See gethostbyaddr(3STDC)
getopt(3STDC): get an option letter from command line argument list
gets(3STDC): get a string from a stream
getsitebyaddr(3STDC): See getsitebyname(3STDC)
getsitebyname(3STDC): get ChorusOS site information
getsubopt(3STDC): get sub options from an argument
getw(3STDC): See getc(3STDC)
gmtime(3STDC): See ctime(3STDC)
gmtime_r(3STDC): See ctime_r(3STDC)
htonl(3STDC): See byteorder(3STDC)
htons(3STDC): See byteorder(3STDC)
index(3STDC): locate character in string
inet(3STDC): Internet address manipulation routines
inet_addr(3STDC): See inet(3STDC)
inet_aton(3STDC): See inet(3STDC)
inet_lnaof(3STDC): See inet(3STDC)
inet_makeaddr(3STDC): See inet(3STDC)
inet_netof(3STDC): See inet(3STDC)
inet_network(3STDC): See inet(3STDC)
inet_ntoa(3STDC): See inet(3STDC)
initstate(3STDC): See random(3STDC)
isalnum(3STDC): See ctype(3STDC)
isalpha(3STDC): See ctype(3STDC)
isascii(3STDC): test for ASCII character
isatty(3STDC): check if a file descriptor is associated with a terminal
iscntrl(3STDC): See ctype(3STDC)
isdigit(3STDC): See ctype(3STDC)
isgraph(3STDC): See ctype(3STDC)
isinf(3STDC): test for infinity or not-a-number
islower(3STDC): See ctype(3STDC)
isnan(3STDC): See isinf(3STDC)
isprint(3STDC): See ctype(3STDC)
ispunct(3STDC): See ctype(3STDC)
isspace(3STDC): See ctype(3STDC)
isupper(3STDC): See ctype(3STDC)
isxdigit(3STDC): See ctype(3STDC)
labs(3STDC): return the absolute value of a long integer
ldexp(3STDC): multiply floating-point number by integral power of 2
ldiv(3STDC): return quotient and remainder from division
localtime(3STDC): See ctime(3STDC)
localtime_r(3STDC): See ctime_r(3STDC)
longjmp(3STDC): See setjmp(3STDC)
malloc(3STDC): main memory allocator
memccpy(3STDC): See memory(3STDC)
memchr(3STDC): See memory(3STDC)
memcmp(3STDC): See memory(3STDC)
memcpy(3STDC): See memory(3STDC)
memmove(3STDC): See memory(3STDC)
memory(3STDC): memory operations
memset(3STDC): See memory(3STDC)
mkstemp(3STDC): See mktemp(3STDC)
mktemp(3STDC): make temporary file name (unique)
mktime(3STDC): See ctime(3STDC)
modf(3STDC): extract signed integral and fractional values from floating-point number
ntohl(3STDC): See byteorder(3STDC)
ntohs(3STDC): See byteorder(3STDC)
perror(3STDC): system error messages
printerr(3STDC): See printf(3STDC)
printf(3STDC): print formatted output
putc(3STDC): put character or word on a stream
putc_unlocked(3STDC): See unlocked(3STDC)
putchar(3STDC): put a character or word on the standard output channel
putchar_unlocked(3STDC): See unlocked(3STDC)
putenv(3STDC): See getenv(3STDC)
puts(3STDC): put a string on a stream
putw(3STDC): See putc(3STDC)
qsort(3STDC): quicker sort
rand(3STDC): pseudo random number generator
rand_r(3STDC): thread-wise random number generator
random(3STDC): better random number generator
realloc(3STDC): See malloc(3STDC)
regcomp(3STDC): See regex(3STDC)
regerror(3STDC): See regex(3STDC)
regex(3STDC): regular-expression library
regexec(3STDC): See regex(3STDC)
regfree(3STDC): See regex(3STDC)
remove(3STDC): remove directory entry
rewind(3STDC): See fseek(3STDC)
rindex(3STDC): See index(3STDC)
scandir(3STDC): scan a directory
scanf(3STDC): convert formatted input
setbuf(3STDC): assign buffering to a stream
setenv(3STDC): See getenv(3STDC)
setjmp(3STDC): non-local goto
setstate(3STDC): See random(3STDC)
setvbuf(3STDC): See setbuf(3STDC)
snprintf(3STDC): See printf(3STDC)
sprintf(3STDC): See printf(3STDC)
srand(3STDC): See rand(3STDC)
srandom(3STDC): See random(3STDC)
sscanf(3STDC): See scanf(3STDC)
stdarg(3STDC): variable argument lists
strcasecmp(3STDC): See string(3STDC)
strcat(3STDC): See string(3STDC)
strchr(3STDC): See string(3STDC)
strcmp(3STDC): See string(3STDC)
strcoll(3STDC): See string(3STDC)
strcpy(3STDC): See string(3STDC)
strcspn(3STDC): See string(3STDC)
strdup(3STDC): See string(3STDC)
strerror(3STDC): system error messages
strftime(3STDC): format date and time
string(3STDC): string operations
strlen(3STDC): See string(3STDC)
strncasecmp(3STDC): See string(3STDC)
strncat(3STDC): See string(3STDC)
strncmp(3STDC): See string(3STDC)
strncpy(3STDC): See string(3STDC)
strpbrk(3STDC): See string(3STDC)
strrchr(3STDC): See string(3STDC)
strsep(3STDC): separate strings
strspn(3STDC): See string(3STDC)
strstr(3STDC): See string(3STDC)
strtod(3STDC): convert an ASCII string to a floating-point number
strtok(3STDC): string tokens
strtok_r(3STDC): string tokens reentrant
strtol(3STDC): convert string to integer
strtoul(3STDC): convert a string to an unsigned long or uquad_t integer
strxfrm(3STDC): transform a string under locale
swab(3STDC): swap adjacent bytes
sys_errlist(3STDC): See perror(3STDC)
sys_nerr(3STDC): See perror(3STDC)
tempnam(3STDC): See tmpnam(3STDC)
thread_once(3STDC): execute an init routine once
time(3STDC): get time
tmpfile(3STDC): create a temporary file
tmpnam(3STDC): create a name for a temporary file
toascii(3STDC): convert a byte to 7-bit ASCII
tolower(3STDC): See ctype(3STDC)
toupper(3STDC): See ctype(3STDC)
tzset(3STDC): set time conversion information
ungetc(3STDC): push character back into input stream
unlocked(3STDC): explicit locking functions
unsetenv(3STDC): See getenv(3STDC)
vfprintf(3STDC): print formatted output
vprintf(3STDC): print formatted output
vsnprintf(3STDC): See vprintf(3STDC)
vsprintf(3STDC): See vprintf(3STDC)

ChorusOS 4.0 Last Revised December 1999