stdlib(5)                                                         stdlib(5)

NAME
     stdlib - standard library definitions

SYNOPSIS
     #include <stdlib.h>

DESCRIPTION
     The <stdlib.h> header defines the following macro names:

     EXITFAILURE      Unsuccessful termination for exit(), evaluates to a
                       non-zero value.

     EXITSUCCESS      Successful termination for exit(), evaluates to 0.

     NULL              Null pointer.

     RANDMAX          Maximum value returned by rand(), at least 32,767.

     MBCURMAX        Integer expression whose value is the maximum number
                       of bytes in a character specified by the current
                       locale.

     The following data types are defined through typedef:

     divt             Structure type returned by div() function.

     ldivt            Structure type returned by ldiv() function.

     sizet            As described in <stddef.h>.

     wchart           As described in <stddef.h>.

     In addition, the following symbolic names and macros are defined as in
     <sys/wait.h>, for use in decoding the return value from system():

     WNOHANG
     WUNTRACED
     WEXITSTATUS()
     WIFEXITED()
     WIFSIGNALED()
     WIFSTOPPED()
     WSTOPSIG()
     WTERMSIG()












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stdlib(5)                                                         stdlib(5)

     The following are declared as functions and may also be defined as
     macros:

     long     a64l(const char *s);
     void     abort(void);
     int      abs(int i);
     int      atexit(void (*func)(void));
     double   atof(const char *str);
     int      atoi(const char *str);
     long     int atol(const char *str);
     void    *bsearch(const void *key, const void *base,
                 sizet nel, sizet width,
                 int (*compar)(const void *, const void *));
     void    *calloc(sizet nelem, sizet elsize);
     divt    div(int numer, int denom);
     double   drand48(void);
     double   erand48(unsigned short int xsubi[3]);
     char    *ecvt (double value, int ndigit, int *decpt, int *sign);
     void     exit(int status);
     char    *fcvt (double value, int ndigit, int *decpt, int *sign);
     void     free(void *ptr);
     char    *gcvt (double value, int ndigit, char *buf);
     char    *getenv(const char *name);
     int      getsubopt(char **optionp, char *const *tokens, char **valuep);
     int      grantpt(int fildes);
     char    *initstate(unsigned seed, char *state, int size);
     long int jrand48 (unsigned short int xsubi[3]);
     char    *l64a(long value);
     long int labs(long int j);
     void     lcong48(unsigned short int param[7]);
     ldivt   ldiv(long int numer, long int denom);
     long int lrand48 (void);
     void    *malloc(sizet size);
     int      mblen (const char *s, sizet n);
     sizet   mbstowcs (wchart *pwcs, const char *s, sizet n);
     int      mbtowc (wchart *pwc, const char *s, sizet n);
     char    *mktemp(char *template);
     int      mkstemp(char *template);
     long int mrand48 (void);
     long int nrand48 (unsigned short int xsubi[3]);
     char    *ptsname(int fildes);
     int      putenv(const char *string);
     void     qsort(void *base, sizet nel, sizet width,
              int (*compar)(const void *, const void *));
     int      rand(void);
     long     random(void);
     void    *realloc(void *ptr, sizet size);
     char    *realpath(const char *filename, char *resolvedname);
     unsigned short int *seed48 (unsigned short int seed18v[3]);
     void     setkey(const char *key);
     char    *setstate(char *state);
     void     srand(unsigned int seed);


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stdlib(5)                                                         stdlib(5)

     void     srand48(long int seedval);
     void     srandom(unsigned seed);
     double   strtod(const char *str, char **ptr);
     long int strtol(const char *str, char **ptr, int base);
     unsigned long int strtoul(const char *str, char **ptr, int base);
     int      system(const char *string);
     int      ttyslot(void);
     int      unlockpt(int fildes);
     void    *valloc(sizet size);
     sizet   wcstombs(char *s, const wchart *pwcs, sizet n);
     int      wctomb(char *s, wchart wchar);

     Inclusion of the stdlib() header may also make visible all symbols
     from <stddef.h>, <limits.h>, <math.h> and <sys/wait.h>.

SEE ALSO
     exit(2), initstate(3), mkstemp(3), setstate(3), srandom(3), a64l(3C),
     abort(3C), abs(3C), atexit(3C), atof(3C), atoi(3C), atol(3C),
     bsearch(3C), calloc(3C), div(3C), drand48(3C), ecvt(3C), erand48(3C),
     fcvt(3C), free(3C), gcvt(3C), getenv(3C), getsubopt(3C), grantpt(3C),
     jrand48(3C), l64a(3C), labs(3C), lcong48(3C), ldiv(3C), lrand48(3C),
     malloc(3C), mblen(3C), mbstowcs(3C), mbtowc(3C), mktemp(3C),
     mrand48(3C), nrand48(3C), ptsname(3C), putenv(3C), qsort(3C),
     rand(3C), realloc(3C), realpath(3C), srand(3C), srand48(3C),
     strtod(3C), strtol(3C), strtoul(3C), ttyslot(3C), unlockpt(3C),
     valloc(3C), wcstombs(3C), wctomb(3C), types(5).




























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