This table briefly describes all the ILE C library extensions, listed in alphabetical order. This table provides the include file name, and the function prototype for each function.
| Function | System Include file | Function prototype | Description |
|---|---|---|---|
|
_C_Get _Ssn_Handle |
stdio.h | _SSN_Handle_T _C_Get_Ssn_Handle (void); | Returns a handle to the C session for use with DSM APIs. |
|
_C_Quickpool _Debug |
stdio.h | _C_Quickpool_Debug_T _C_Quickpool_Debug(_C_Quickpool_Debug_T *newval); | Modifies Quick Pool memory characteristics. |
|
_C_Quickpool _Init |
stdio.h | int _C_Quickpool_Init(unsigned int numpools, unsigned int *cell_sizes, unsigned int *num_cells); | Initializes the use of the Quick Pool memory management algorithm. |
|
_C_Quickpool _Report |
stdio.h | void _C_Quickpool_Report(void); | Generates a spooled file that contains a snapshot of the memory used by the Quick Pool memory management algorithm in the current activation group. |
|
_C_TS _malloc64 |
stdlib.h | void *_C_TS_malloc64(unsigned long long int); | Same as _C_TS_malloc, but takes an unsigned long long int so the user can ask for more than 2 GB of storage on a single request. |
|
_C_TS _malloc_info |
mallocinfo.h | int _C_TS_malloc_info(struct _C_mallinfo_t *output_record, size_t sizeofoutput); | Returns current memory usage information. |
|
_C_TS _malloc_debug |
mallocinfo.h | int _C_TS_malloc_debug(unsigned int dump_level, unsigned int verify_level, struct _C_mallinfo_t *output_record, size_t sizeofoutput); | Returns the same information as _C_TS_malloc_info, plus produces a spool file of detailed information about the memory structure used by C_TS_malloc functions. |
| _GetExcData | signal.h | void _GetExcData (_INTRPT_Hndlr_Parms_T *parms); | Retrieves information about an exception from within a signal handler. |
| QXXCHGDA | xxdtaa.h | void QXXCHGDA(_DTAA_NAME_T dtaname, short int offset, short int len, char *dtaptr); | Changes the i5/OS data area specified on dtaname using the data pointed to by dtaptr. |
| QXXDTOP | xxcvt.h | void QXXDTOP(unsigned char *pptr, int digits, int fraction, double value); | Converts a double value to a packed decimal value with digits total digits and fraction fractional digits. |
| QXXDTOZ | xxcvt.h | void QXXDTOZ(unsigned char *zptr, int digits, int fraction, double value); | Converts a double value to a zoned decimal value with digits total digits and fraction fractional digits. |
| QXXITOP | xxcvt.h | void QXXITOP(unsigned char *pptr, int digits, int fraction, int value); | Converts an integer value to a packed decimal value. |
| QXXITOZ | xxcvt.h | void QXXITOZ(unsigned char *zptr, int digits, int fraction, int value); | Converts an integer value to a zoned decimal value. |
| QXXPTOD | xxcvt.h | double QXXPTOD(unsigned char *pptr, int digits, int fraction ); | Converts a packed decimal number to a double value with digits total digits and fraction fractional digits. |
| QXXPTOI | xxcvt.h | int QXXPTOI(unsigned char *pptr, int digits, int fraction ); | Converts a packed decimal number to an integer value with digits total digits and fraction fractional digits. |
| QXXRTVDA | xxdtaa.h | void QXXRTVDA(_DTAA_NAME_T dtaname, short int offset, short int len, char *dtaptr); | Retrieves a copy of the i5/OS data area specified on dtaname. |
| QXXZTOD | xxcvt.h | double QXXZTOD(unsigned char *zptr, int digits, int fraction ); | Converts a zoned decimal number to a double value with digits total digits and fraction fractional digits. |
| QXXZTOI | xxcvt.h | int QXXZTOI(unsigned char *zptr, int digits, int fraction ); | Converts a zoned decimal value to an integer value with digits total digits and fraction fractional digits. |
| _Racquire | recio.h | int _Racquire(_RFILE *fp, char *dev); | Prepares a device for record I/O operations. |
| _Rclose | recio.h | int _Rclose(_RFILE *fp); | Closes a file that is opened for record I/O operations. |
| _Rcommit | recio.h | int _Rcommit(char *cmtid); | Completes the current transaction, and establishes a new commitment boundary. |
| _Rdelete | recio.h | _RIOFB_T *_Rdelete(_RFILE *fp); | Deletes the currently locked record. |
| _Rdevatr | xxfdbk.h recio.h | _XXDEV_ATR_T *_Rdevatr(_RFILE *fp, char *pgmdev); | Returns a pointer to a copy of the device attributes feedback area for the file referenced by fp and the device pgmdev. |
| _Rfeod | recio.h | int _Rfeod(_RFILE *fp); | Forces an end-of-file condition for the file referenced by fp. |
| _Rfeov | recio.h | int _Rfeov(_RFILE *fp); | Forces an end-of-volume condition for the tape file referenced by fp. |
| _Rformat | recio.h | void Rformat(_RFILE *fp, char *fmt); | Sets the record format to fmt for the file referenced by fp. |
| _Rindara | recio.h | void _Rindara (_RFILE *fp, char *indic_buf); | Sets up the separate indicator area to be used for subsequent record I/O operations. |
| _Riofbk | recio.h xxfdbk.h | _XXIOFB_T *_Riofbk(_RFILE *fp); | Returns a pointer to a copy of the I/O feedback area for the file referenced by fp. |
| _Rlocate | recio.h | _RIOFB_T *_Rlocate(_RFILE *fp, void *key, int klen_rrn, int opts); | Positions to the record in the file associated with fp and specified by the key, klen_rrn and opt parameters. |
| _Ropen | recio.h | _RFILE *_Ropen(const char *filename, const char *mode ...); | Opens a file for record I/O operations. |
| _Ropnfbk | recio.h xxfdbk.h | _XXOPFB_T *_Ropnfbk(_RFILE *fp); | Returns a pointer to a copy of the open feedback area for the file referenced by fp. |
| _Rpgmdev | recio.h | int _Rpgmdev(_RFILE *fp, char *dev); | Sets the default program device. |
| _Rreadd | recio.h | _RIOFB_T *_Rreadd(_RFILE *fp, void *buf, size_t size, int opts, long rrn); | Reads a record by relative record number. |
| _Rreadf | recio.h | _RIOFB_T *_Rreadf(_RFILE *fp, void *buf, size_t size, int opts); | Reads the first record. |
| _Rreadindv | recio.h | _RIOFB_T *_Rreadindv(_RFILE *fp, void *buf, size_t size, int opts); | Reads a record from an invited device. |
| _Rreadk | recio.h | _RIOFB_T *_Rreadk(_RFILE *fp, void *buf, size_t size, int opts, void *key, int klen); | Reads a record by key. |
| _Rreadl | recio.h | _RIOFB_T *_Rreadl(_RFILE *fp, void *buf, size_t size, int opts); | Reads the last record. |
| _Rreadn | recio.h | _RIOFB_T *_Rreadn(_RFILE *fp, void *buf, size_t size, int opts); | Reads the next record. |
| _Rreadnc | recio.h | _RIOFB_T *_Rreadnc(_RFILE *fp, void *buf, size_t size); | Reads the next changed record in the subfile. |
| _Rreadp | recio.h | _RIOFB_T *_Rreadp(_RFILE *fp, void *buf, size_t size, int opts); | Reads the previous record. |
| _Rreads | recio.h | _RIOFB_T *_Rreads(_RFILE *fp, void *buf, size_t size, int opts); | Reads the same record. |
| _Rrelease | recio.h | int _Rrelease(_RFILE *fp, char *dev); | Makes the specified device ineligible for record I/O operations. |
| _Rrlslck | recio.h | int _Rrlslck(_RFILE *fp); | Releases the currently locked record. |
| _Rrollbck | recio.h | int _Rrollbck(void); | Reestablishes the last commitment boundary as the current commitment boundary. |
| _Rupdate | recio.h | _RIOFB_T *_Rupdate(_RFILE *fp, void *buf, size_t size); | Writes to the record that is currently locked for update. |
| _Rupfb | recio.h | _RIOFB_T *_Rupfb(_RFILE *fp); | Updates the feedback structure with information about the last record I/O operation. |
| _Rwrite | recio.h | _RIOFB_T *_Rwrite(_RFILE *fp, void *buf, size_t size); | Writes a record to the end of the file. |
| _Rwrited | recio.h | _RIOFB_T *_Rwrited(_RFILE *fp, void *buf, size_t size, unsigned long rrn); | Writes a record by relative record number. It only writes over deleted records. |
| _Rwriterd | recio.h | _RIOFB_T *_Rwriterd(_RFILE *fp, void *buf, size_t size); | Reads and writes a record. |
| _Rwrread | recio.h | _RIOFB_T *_Rwrread(_RFILE *fp, void *inbuf, size_t in_buf_size, void *out_buf, size_t out_buf_size); | Functions as _Rwriterd, except separate buffers may be specified for input and output data. |
| __wcsicmp | wchar.h | int __wcsicmp(const wchar_t *string1, const wchar_t *string2); | Compares wide character strings without case sensitivity. |
| __wcsnicmp | wchar.h | int __wcsnicmp(const wchar_t *string1, const wchar_t *string2, size_t count); | Compares wide character strings without case sensitivity. |