The functions, macros, and data structures in the C library are described here in alphabetical order.
A ¦ B ¦ C ¦ D ¦ E ¦ F ¦ G ¦ H ¦ I ¦ J ¦ K ¦ L ¦ M ¦ N ¦ O ¦ P ¦ Q ¦ R ¦ S ¦ T ¦ U ¦ V ¦ W ¦ X ¦ Y ¦ Z
The following are described elsewhere:
This chapter describes the API components whose names begin with "M".
| API component | Description |
|---|---|
| main() | Program entry function |
| mallinfo() | Get memory allocation information |
| malloc() | Allocate memory |
| mallopt() | Control the extra checking for memory allocation |
| max() | Return the greater of two numbers |
| mblen() | Count the bytes in a multibyte character |
| mbrlen() | Count the bytes in a multibyte character (restartable) |
| mbrtowc() | Convert a multibyte character into a wide character (restartable) |
| mbsinit() | Determine the status of the conversion object used for restartable mb*() functions |
| mbsrtowcs() | Convert a multibyte-character string into a wide-character string (restartable) |
| mbstowcs() | Convert a multibyte-character string into a wide-character string |
| mbtowc() | Convert a multibyte character into a wide character |
| mcheck() | Enable memory allocation routine consistency checks |
| mem_offset(), mem_offset64() | Get the physical address of a virtually mapped memory block |
| memalign() | Allocate aligned memory |
| memccpy() | Copy bytes between buffers until a given byte is found |
| memchr() | Find the first occurrence of a character in a buffer |
| memcmp() | Compare the bytes in two buffers |
| memcpy() | Copy bytes from one buffer to another |
| memcpyv() | Copy a given number of structures |
| memicmp() | Compare two buffers, ignoring case |
| memmove() | Copy bytes from one buffer to another, handling overlapping memory correctly |
| memset() | Set memory to a given value |
| memset_s() | Securely set memory to a given value |
| message_attach() | Attach a message range |
| message_connect() | Create a connection to a channel |
| message_detach() | Detach a message range |
| min() | Return the lesser of two numbers |
| mkdir() | Create a subdirectory |
| mkfifo() | Create a FIFO special file |
| mknod() | Make a new filesystem entry point |
| mkstemp() | Make a unique temporary filename, and open the file |
| mktemp() | Make a unique temporary filename |
| mktime() | Convert local time to calendar time |
| mlock() | Lock a range of process address space in physical memory |
| mlockall() | Lock all of a process's address space |
| mmap(), mmap64() | Map a memory region into a process's address space |
| mmap_device_io() | Gain access to a device's registers |
| mmap_device_memory() | Map a device's physical memory into a process's address space |
| modem_open() | Open a serial port |
| modem_read() | Read bytes from a file descriptor |
| modem_script() | Run a script on a device |
| modem_write() | Write a string to a device |
| modf(), modff() | Break a number into integral and fractional parts |
| mount() | Mount a filesystem |
| mount_parse_generic_args() | Strip off common mount arguments |
| mprobe() | Perform consistency check on memory |
| mprotect() | Change memory protection |
| mq_close() | Close a message queue |
| mq_getattr() | Get a message queue's attributes |
| mq_notify() | Ask to be notified when there's a message in the queue |
| mq_open() | Open a message queue |
| mq_receive() | Receive a message from a queue |
| mq_send() | Send a message to a queue |
| mq_setattr() | Set a queue's attributes |
| mq_timedreceive(), mq_timedreceive_monotonic() | Receive a message from a message queue |
| mq_timedsend(), mq_timedsend_monotonic() | Send a message to a message queue |
| mq_unlink() | Remove a queue |
| mrand48() | Generate a pseudo-random signed long integer |
| _msg_info | Information about a message |
| MsgCurrent(), MsgCurrent_r() | Resume processing of a message |
| MsgDeliverEvent(), MsgDeliverEvent_r() | Deliver an event through a channel |
| MsgError(), MsgError_r() | Unblock a client and set its errno |
| MsgInfo(), MsgInfo_r() | Get additional information about a message |
| MsgKeyData(), MsgKeyData_r() | Pass data through a common client |
| MsgRead(), MsgRead_r() | Read data from a message |
| MsgReadv(), MsgReadv_r() | Read data from a message |
| MsgReceive(), MsgReceive_r() | Wait for a message or pulse on a channel |
| MsgReceivePulse(), MsgReceivePulse_r() | Receive a pulse on a channel |
| MsgReceivePulsev(), MsgReceivePulsev_r() | Receive a pulse on a channel |
| MsgReceivev(), MsgReceivev_r() | Wait for a message or pulse on a channel |
| MsgReply(), MsgReply_r() | Reply with a message |
| MsgReplyv(), MsgReplyv_r() | Reply with a message |
| MsgSend(), MsgSend_r() | Send a message to a channel |
| MsgSendnc(), MsgSendnc_r() | Send a message to a channel (non-cancellation point) |
| MsgSendPulse(), MsgSendPulse_r() | Send a pulse to a process |
| MsgSendsv(), MsgSendsv_r() | Send a message to a channel |
| MsgSendsvnc(), MsgSendsvnc_r() | Send a message to a channel (non-cancellation point) |
| MsgSendv(), MsgSendv_r() | Send a message to a channel |
| MsgSendvnc(), MsgSendvnc_r() | Send a message to a channel (non-cancellation point) |
| MsgSendvs(), MsgSendvs_r() | Send a message to a channel |
| MsgSendvsnc(), MsgSendvsnc_r() | Send a message to a channel (non-cancellation point) |
| MsgVerifyEvent(), MsgVerifyEvent_r() | Check the validity of a receive ID and an event configuration |
| MsgWrite(), MsgWrite_r() | Write a reply |
| MsgWritev(), MsgWritev_r() | Write a reply |
| msync() | Synchronize memory with physical storage |
| munlock() | Unlock the range of process address space already allocated |
| munlockall() | Unlock a process's address space |
| munmap() | Unmap previously mapped addresses |
| munmap_device_io() | Free access to a device's registers |
| munmap_device_memory() | Unmap previously mapped addresses |
| munmap_flags() | Unmap previously mapped addresses, exercising more control than possible with munmap() |