diff options
Diffstat (limited to 'include/stdlib.h')
| -rw-r--r-- | include/stdlib.h | 140 |
1 files changed, 70 insertions, 70 deletions
diff --git a/include/stdlib.h b/include/stdlib.h index d323d099b..b1ae61d06 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -1,6 +1,7 @@ -/* stdlib.h <ndf@linux.mit.edu> */ +/* stdlib.h */ #include <features.h> #include <sys/types.h> +#include <limits.h> #ifndef __STDLIB_H #define __STDLIB_H @@ -10,102 +11,101 @@ #define NULL ((void *) 0) #endif -/* For program termination */ -#define EXIT_FAILURE 1 -#define EXIT_SUCCESS 0 +/* We define these the same for all machines. + * Changes from this to the outside world should be done in `_exit'. */ +#define EXIT_FAILURE 1 /* Failing exit status. */ +#define EXIT_SUCCESS 0 /* Successful exit status. */ -/* Call all functions registered with `atexit' and `on_exit', - * in the reverse of the order in which they were registered - * perform stdio cleanup, and terminate program execution with STATUS. */ -extern void exit __P ((int __status)) __attribute__ ((__noreturn__)); -/* Register a function to be called when `exit' is called. */ -extern int atexit __P ((void (*__func) (void))); -/* Abort execution and generate a core-dump. */ -extern void abort __P ((void)) __attribute__ ((__noreturn__)); +/* The largest number rand will return */ +#define RAND_MAX INT_MIN -extern void * malloc __P ((size_t)); -extern void * calloc __P ((size_t, size_t)); -extern void free __P ((void *)); -extern void * realloc __P ((void *, size_t)); +/* Maximum length of a multibyte character in the current locale. */ +#define MB_CUR_MAX 1 -#if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC -# include <alloca.h> -#endif /* Use GNU, BSD, or misc. */ +typedef struct +{ + int quot; /* Quotient. */ + int rem; /* Remainder. */ +} div_t; -#ifdef DEBUG_MALLOC +typedef struct +{ + long int quot; /* Quotient. */ + long int rem; /* Remainder. */ +} ldiv_t; -extern void * malloc_dbg __P ((size_t, char* func, char* file, int line)); -extern void * calloc_dbg __P ((size_t, size_t, char* func, char* file, int line)); -extern void free_dbg __P ((void *, char* func, char* file, int line)); -extern void * realloc_dbg __P ((void *, size_t, char* func, char* file, int line)); +/* comparison function used by bsearch() and qsort() */ +typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t)); +typedef __compar_fn_t comparison_fn_t; -#define malloc(x) malloc_dbg((x),__FUNCTION__,__FILE__,__LINE__) -#define calloc(x,y) calloc_dbg((x),(y),__FUNCTION__,__FILE__,__LINE__) -#define free(x) free_dbg((x),__FUNCTION__,__FILE__,__LINE__) -#define realloc(x) realloc((x),__FUNCTION__,__FILE__,__LINE__) +/* String to number conversion functions */ +#define atof(x) strtod((x),(char**)0) +#define atoi(x) (int)strtol((x),(char**)0,10) +#define atol(x) strtol((x),(char**)0,10) +extern long strtol __P ((const char * nptr, char ** endptr, int base)); +extern unsigned long strtoul __P ((const char * nptr, char ** endptr, int base)); +#ifndef __HAS_NO_FLOATS__ +extern char * gcvt __P ((float number, size_t ndigit, char * buf)); +extern float strtod __P ((const char * nptr, char ** endptr)); #endif + + +/* Random number functions */ extern int rand __P ((void)); extern void srand __P ((unsigned int seed)); -extern long strtol __P ((const char * nptr, char ** endptr, int base)); -extern unsigned long strtoul __P ((const char * nptr, - char ** endptr, int base)); -#ifndef __HAS_NO_FLOATS__ -extern float strtod __P ((const char * nptr, char ** endptr)); + +/* Memory management functions */ +extern __ptr_t alloca __P ((size_t __size)); +extern __ptr_t calloc __P ((size_t, size_t)); +extern __ptr_t malloc __P ((size_t)); +extern __ptr_t realloc __P ((__ptr_t, size_t)); +extern void free __P ((__ptr_t)); + +#ifdef DEBUG_MALLOC +extern __ptr_t malloc_dbg __P ((size_t, char* func, char* file, int line)); +extern __ptr_t calloc_dbg __P ((size_t, size_t, char* func, char* file, int line)); +extern void free_dbg __P ((__ptr_t, char* func, char* file, int line)); +extern __ptr_t realloc_dbg __P ((__ptr_t, size_t, char* func, char* file, int line)); +#define malloc(x) malloc_dbg((x),__FUNCTION__,__FILE__,__LINE__) +#define calloc(x,y) calloc_dbg((x),(y),__FUNCTION__,__FILE__,__LINE__) +#define free(x) free_dbg((x),__FUNCTION__,__FILE__,__LINE__) +#define realloc(x) realloc((x),__FUNCTION__,__FILE__,__LINE__) #endif -extern char *getenv __P ((__const char *__name)); -extern int putenv __P ((__const char *__string)); +/* System and environment functions */ +extern void abort __P ((void)) __attribute__ ((__noreturn__)); +extern int atexit __P ((void (*__func) (void))); +extern void exit __P ((int __status)) __attribute__ ((__noreturn__)); +extern void _exit __P ((int __status)) __attribute__ ((__noreturn__)); +extern char *getenv __P ((__const char *__name)); +extern int putenv __P ((__const char *__string)); +extern char *realpath __P ((__const char *__restrict __name, + char *__restrict __resolved)); extern int setenv __P ((__const char *__name, __const char *__value, int __replace)); -extern void unsetenv __P ((__const char *__name)); - extern int system __P ((__const char *__command)); +extern void unsetenv __P ((__const char *__name)); -extern char * gcvt __P ((float number, size_t ndigit, char * buf)); - -#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED -/* Return the canonical absolute name of file NAME. The last file name - * component need not exist, and may be a symlink to a nonexistent file. - * If RESOLVED is null, the result is malloc'd; otherwise, if the canonical - * name is PATH_MAX chars or more, returns null with `errno' set to - * ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars, returns the - * name in RESOLVED. */ -extern char *realpath __P ((__const char *__restrict __name, - char *__restrict __resolved)); -#endif -/* Shorthand for type of comparison functions. */ -typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t)); -typedef __compar_fn_t comparison_fn_t; -/* Sort NMEMB elements of BASE, of SIZE bytes each, - using COMPAR to perform the comparisons. */ +/* Search and sort functions */ +extern __ptr_t bsearch __P ((__const __ptr_t __key, __const __ptr_t __base, + size_t __nmemb, size_t __size, __compar_fn_t __compar)); extern void qsort __P ((__ptr_t __base, size_t __nmemb, size_t __size, __compar_fn_t __compar)); -#define atof(x) strtod((x),(char**)0) -#define atoi(x) (int)strtol((x),(char**)0,10) -#define atol(x) strtol((x),(char**)0,10) -/* Returned by `div'. */ -typedef struct - { - int quot; /* Quotient. */ - int rem; /* Remainder. */ - } div_t; - -/* Returned by `ldiv'. */ -typedef struct - { - long int quot; /* Quotient. */ - long int rem; /* Remainder. */ - } ldiv_t; +/* Integer math functions */ +extern int abs __P ((int __x)) __attribute__ ((__const__)); +extern div_t div __P ((int __numer, int __denom)) __attribute__ ((__const__)); +extern long int labs __P ((long int __x)) __attribute__ ((__const__)); +extern ldiv_t ldiv __P ((long int __numer, long int __denom)) __attribute__ ((__const__)); |