8.1. Introduction#

The language-specific services for the C programming language manager is …

The directives provided by the language-specific services for the C programming language manager are:

• [setlocale] - Set the Current Locale

• [fileno] - Obtain File Descriptor Number for this File

• [fdopen] - Associate Stream with File Descriptor

• [flockfile] - Acquire Ownership of File Stream

• [ftrylockfile] - Poll to Acquire Ownership of File Stream

• [funlockfile] - Release Ownership of File Stream

• [getc_unlocked] - Get Character without Locking

• [getchar_unlocked] - Get Character from stdin without Locking

• [putc_unlocked] - Put Character without Locking

• [putchar_unlocked] - Put Character to stdin without Locking

• [setjmp] - Save Context for Non-Local Goto

• [longjmp] - Non-Local Jump to a Saved Context

• [sigsetjmp] - Save Context with Signal Status for Non-Local Goto

• [siglongjmp] - Non-Local Jump with Signal Status to a Saved Context

• [tzset] - Initialize Time Conversion Information

• [strtok_r] - Reentrant Extract Token from String

• [asctime_r] - Reentrant struct tm to ASCII Time Conversion

• [ctime_r] - Reentrant time_t to ASCII Time Conversion

• [gmtime_r] - Reentrant UTC Time Conversion

• [localtime_r] - Reentrant Local Time Conversion

• [rand_r] - Reentrant Random Number Generation

8.2. Background#

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8.3. Operations#

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8.4. Directives#

This section details the language-specific services for the C programming language manager’s directives. A subsection is dedicated to each of this manager’s directives and describes the calling sequence, related constants, usage, and status codes.

#include <locale.h>
char *setlocale(int category, const char *locale);

#include <stdio.h>
int fileno(FILE *stream);

#include <stdio.h>
FILE *fdopen(int fildes, const char *mode);

#include <stdio.h>
void flockfile(FILE *file);

#include <stdio.h>
int ftrylockfile(FILE *file);

#include <stdio.h>
void funlockfile(FILE *file);

#include <stdio.h>
int getc_unlocked(FILE *stream);

#include <stdio.h>
int getchar_unlocked(void);

#include <stdio.h>
int putc_unlocked(int c, FILE *stream);

#include <stdio.h>
int putchar_unlocked(int c);

#include <setjmp.h>
int setjmp(jmp_buf env);

#include <setjmp.h>
void longjmp(jmp_buf env, int val);

#include <setjmp.h>
int sigsetjmp(sigjmp_buf env, int savemask);

#include <setjmp.h>
void siglongjmp(sigjmp_buf env, int val);

#include <time.h>
extern int daylight;
extern long timezone;
extern char *tzname[2];
void tzset(void);

#include <string.h>
char *strtok_r(char *restrict s, const char *restrict sep,
char **restrict state);

#include <time.h>
char *asctime_r(const struct tm *restrict tm, char *restrict buf);

#include <time.h>
char *ctime_r(const time_t *clock, char *buf);

#include <time.h>
struct tm *gmtime_r(const time_t *restrict timer,
struct tm *restrict result);

#include <time.h>
struct tm *localtime_r(const time_t *restrict timer,
struct tm *restrict result);

#include <stdlib.h>
int rand_r(unsigned *seed);