Mon Mar 25 03:35:16 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>

[kopensolaris-gnu/glibc.git] / stdlib / stdlib.h

diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index a93e14f..793c641 100644 (file)
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.

 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or


@@ -75,6 +75,13 @@ extern long int atol __P ((__const char *__nptr));
 
 /* Convert a string to a floating-point number.  */
 extern double strtod __P ((__const char *__nptr, char **__endptr));
 
 /* Convert a string to a floating-point number.  */
 extern double strtod __P ((__const char *__nptr, char **__endptr));

+
+#ifdef __USE_GNU
+/* Likewise for `float' and `long double' sizes of floating-point numbers.  */
+extern float strtof __P ((__const char *__nptr, char **__endptr));
+extern __long_double_t strtold __P ((__const char *__nptr, char **__endptr));
+#endif
+

 /* Convert a string to a long integer.  */
 extern long int strtol __P ((__const char *__nptr, char **__endptr,
                             int __base));
 /* Convert a string to a long integer.  */
 extern long int strtol __P ((__const char *__nptr, char **__endptr,
                             int __base));


@@ -82,11 +89,82 @@ extern long int strtol __P ((__const char *__nptr, char **__endptr,
 extern unsigned long int strtoul __P ((__const char *__nptr,
                                       char **__endptr, int __base));
 
 extern unsigned long int strtoul __P ((__const char *__nptr,
                                       char **__endptr, int __base));
 

-#ifdef __OPTIMIZE__
-#define        atof(nptr)      strtod((nptr), (char **) NULL)
-#define        atoi(nptr)      ((int) atol(nptr))
-#define        atol(nptr)      strtol((nptr), (char **) NULL, 10)
-#endif /* Optimizing.  */
+#if defined (__GNUC__) && defined (__USE_BSD)
+/* Convert a string to a quadword integer.  */
+extern long long int strtoq __P ((__const char *__nptr, char **__endptr,
+                                 int __base));
+/* Convert a string to an unsigned quadword integer.  */
+extern unsigned long long int strtouq __P ((__const char *__nptr,
+                                           char **__endptr, int __base));
+#endif /* GCC and use BSD.  */
+
+
+/* The internal entry points for `strtoX' take an extra flag argument
+   saying whether or not to parse locale-dependent number grouping.  */
+
+extern double __strtod_internal (__const char *__nptr,
+                                char **__endptr, int __group);
+extern float __strtof_internal (__const char *__nptr, char **__endptr,
+                               int __group);
+extern __long_double_t __strtold_internal (__const char *__nptr,
+                                          char **__endptr, int __group);
+extern long int __strtol_internal (__const char *__nptr, char **__endptr,
+                                  int __base, int __group);
+extern unsigned long int __strtoul_internal (__const char *__nptr,
+                                            char **__endptr, int __base,
+                                            int __group);
+extern long long int __strtoq_internal (__const char *__nptr, char **__endptr,
+                                       int __base, int __group);
+extern unsigned long long int __strtouq_internal (__const char *__nptr,
+                                                 char **__endptr, int __base,
+                                                 int __group);
+
+#if defined (__OPTIMIZE__) && __GNUC__ >= 2
+/* Define inline functions which call the internal entry points.  */
+
+extern __inline double strtod (__const char *__nptr, char **__endptr)
+{ return __strtod_internal (__nptr, __endptr, 0); }
+extern __inline long int strtol (__const char *__nptr,
+                                char **__endptr, int __base)
+{ return __strtol_internal (__nptr, __endptr, __base, 0); }
+extern __inline unsigned long int strtoul (__const char *__nptr,
+                                          char **__endptr, int __base)
+{ return __strtoul_internal (__nptr, __endptr, __base, 0); }
+
+#ifdef __USE_GNU
+extern __inline float strtof (__const char *__nptr, char **__endptr)
+{ return __strtof_internal (__nptr, __endptr, 0); }
+extern __inline __long_double_t strtold (__const char *__nptr, char **__endptr)
+{ return __strtold_internal (__nptr, __endptr, 0); }
+#endif
+
+#ifdef __USE_BSD
+extern __inline long long int strtoq (__const char *__nptr, char **__endptr,
+                                     int __base)
+{ return __strtoq_internal (__nptr, __endptr, __base, 0); }
+extern __inline unsigned long long int strtouq (__const char *__nptr,
+                                           char **__endptr, int __base)
+{ return __strtouq_internal (__nptr, __endptr, __base, 0); }
+#endif
+
+extern __inline double atof (__const char *__nptr)
+{ return strtod (__nptr, (char **) NULL); }
+extern __inline int atoi (__const char *__nptr)
+{ return (int) strtol (__nptr, (char **) NULL, 10); }
+extern __inline long int atol (__const char *__nptr)
+{ return strtol (__nptr, (char **) NULL, 10); }
+#endif /* Optimizing GCC >=2.  */
+
+
+#ifdef __USE_SVID
+/* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant
+   digit first.  Returns a pointer to static storage overwritten by the
+   next call.  */
+extern char *l64a __P ((long int __n));
+
+/* Read a number from a string in base 64 as above.  */
+extern long int a64l __P ((const char *));
+#endif

 
 
 /* Return a random integer between 0 and RAND_MAX inclusive.  */
 
 
 /* Return a random integer between 0 and RAND_MAX inclusive.  */


@@ -94,12 +172,16 @@ extern int rand __P ((void));
 /* Seed the random number generator with the given number.  */
 extern void srand __P ((unsigned int __seed));
 
 /* Seed the random number generator with the given number.  */
 extern void srand __P ((unsigned int __seed));
 

+#ifdef __USE_BSD
+
+#include <sys/types.h> /* we need int32_t... */
+

 /* These are the functions that actually do things.  The `random', `srandom',
    `initstate' and `setstate' functions are those from BSD Unices.
    The `rand' and `srand' functions are required by the ANSI standard.
    We provide both interfaces to the same random number generator.  */
 /* Return a random long integer between 0 and RAND_MAX inclusive.  */
 /* These are the functions that actually do things.  The `random', `srandom',
    `initstate' and `setstate' functions are those from BSD Unices.
    The `rand' and `srand' functions are required by the ANSI standard.
    We provide both interfaces to the same random number generator.  */
 /* Return a random long integer between 0 and RAND_MAX inclusive.  */

-extern long int __random __P ((void));
+extern int32_t __random __P ((void));

 /* Seed the random number generator with the given number.  */
 extern void __srandom __P ((unsigned int __seed));
 
 /* Seed the random number generator with the given number.  */
 extern void __srandom __P ((unsigned int __seed));
 


@@ -113,25 +195,100 @@ extern __ptr_t __initstate __P ((unsigned int __seed, __ptr_t __statebuf,
    which should have been previously initialized by `initstate'.  */
 extern __ptr_t __setstate __P ((__ptr_t __statebuf));
 
    which should have been previously initialized by `initstate'.  */
 extern __ptr_t __setstate __P ((__ptr_t __statebuf));
 

-#ifdef __USE_BSD

 extern long int random __P ((void));
 extern void srandom __P ((unsigned int __seed));
 extern __ptr_t initstate __P ((unsigned int __seed, __ptr_t __statebuf,
                               size_t __statelen));
 extern __ptr_t setstate __P ((__ptr_t __statebuf));
 
 extern long int random __P ((void));
 extern void srandom __P ((unsigned int __seed));
 extern __ptr_t initstate __P ((unsigned int __seed, __ptr_t __statebuf,
                               size_t __statelen));
 extern __ptr_t setstate __P ((__ptr_t __statebuf));
 

-#ifdef __OPTIMIZE__
-#define        random()                __random()
-#define        srandom(seed)           __srandom(seed)
-#define        initstate(s, b, n)      __initstate((s), (b), (n))
-#define        setstate(state)         __setstate(state)
-#endif /* Optimizing.  */
-#endif /* Use BSD.  */
+#if defined (__OPTIMIZE__) && __GNUC__ >= 2
+extern __inline long int random (void)
+{ return __random(); }
+extern __inline void srandom (unsigned int __seed)
+{ __srandom(__seed); }
+extern __inline __ptr_t initstate (unsigned int __seed,
+                                  __ptr_t __statebuf, size_t __statelen)
+{ return __initstate (__seed, __statebuf, __statelen); }
+extern __inline __ptr_t setstate (__ptr_t __statebuf)
+{ return __setstate (__statebuf); }
+#endif /* Optimizing GCC >=2.  */
+
+#ifdef __USE_REENTRANT
+/* Reentrant versions of the `random' family of functions.
+   These functions all use the following data structure to contain
+   state, rather than global state variables.  */
+
+struct random_data
+  {
+    int32_t *fptr;             /* Front pointer.  */
+    int32_t *rptr;             /* Rear pointer.  */
+    int32_t *state;            /* Array of state values.  */
+    int rand_type;             /* Type of random number generator.  */
+    int rand_deg;              /* Degree of random number generator.  */
+    int rand_sep;              /* Distance between front and rear.  */
+    int32_t *end_ptr;          /* Pointer behind state table.  */
+  };
+
+extern int __random_r __P ((struct random_data *__buf, int32_t *__result));
+extern int random_r __P ((struct random_data *__buf, int32_t *__result));
+extern int __srandom_r __P ((unsigned int __seed, struct random_data *__buf));
+extern int __initstate_r __P ((unsigned int __seed, __ptr_t __statebuf,
+                              size_t __statelen, struct random_data *__buf));
+extern int __setstate_r __P ((__ptr_t __statebuf, struct random_data *__buf));
+
+extern int srandom_r __P ((unsigned int __seed, struct random_data *__buf));
+extern int initstate_r __P ((unsigned int __seed, __ptr_t __statebuf,
+                            size_t __statelen, struct random_data *__buf));
+extern int setstate_r __P ((__ptr_t __statebuf, struct random_data *__buf));
+#endif /* __USE_REENTRANT.  */
+#endif /* Use BSD.  */
+
+
+#ifdef __USE_SVID
+/* System V style 48-bit random number generator functions.  */

 
 

-#ifdef __OPTIMIZE__
-#define        rand()          ((int) __random())
-#define        srand(seed)     __srandom(seed)
-#endif /* Optimizing.  */
+/* Data structure for communication with thread safe versions.  */
+struct drand48_data
+  {
+    unsigned short int X[3];   /* Current state.  */
+    unsigned short int a[3];   /* Factor in congruential formula.  */
+    unsigned short int c;      /* Additive const. in congruential formula.  */
+    unsigned short int old_X[3]; /* Old state.  */
+    int init;                  /* Flag for initializing.  */
+  };
+
+/* Return non-negative, double-precision floating-point value in [0.0,1.0).  */
+extern double drand48 __P ((void));
+extern int drand48_r __P ((struct drand48_data *__buffer, double *__result));
+extern double erand48 __P ((unsigned short int __xsubi[3]));
+extern int erand48_r __P ((unsigned short int __xsubi[3],
+                          struct drand48_data *__buffer, double *__result));
+/* Return non-negative, long integer in [0,2^31).  */
+extern long lrand48 __P ((void));
+extern int lrand48_r __P ((struct drand48_data *__buffer, long *__result));
+extern long nrand48 __P ((unsigned short int __xsubi[3]));
+extern int nrand48_r __P ((unsigned short int __xsubi[3],
+                          struct drand48_data *__buffer, long *__result));
+/* Return signed, long integers in [-2^31,2^31).  */
+extern long mrand48 __P ((void));
+extern int mrand48_r __P ((struct drand48_data *__buffer, long *__result));
+extern long jrand48 __P ((unsigned short int __xsubi[3]));
+extern int jrand48_r __P ((unsigned short int __xsubi[3],
+                          struct drand48_data *__buffer, long *__result));
+/* Seed random number generator.  */
+extern void srand48 __P ((long __seedval));
+extern int srand48_r __P ((long __seedval, struct drand48_data *__buffer));
+extern unsigned short int *seed48 __P ((unsigned short int __seed16v[3]));
+extern int seed48_r __P ((unsigned short int __seed16v[3],
+                         struct drand48_data *__buffer));
+extern void lcong48 __P ((unsigned short int __param[7]));
+extern int lcong48_r __P ((unsigned short int __param[7],
+                          struct drand48_data *__buffer));
+
+/* Internal function to compute next state of the generator.  */
+extern int __drand48_iterate __P ((unsigned short int __xsubi[3],
+                                  struct drand48_data *__buffer));
+#endif /* __USE_SVID.  */

 
 
 /* Allocate SIZE bytes of memory.  */
 
 
 /* Allocate SIZE bytes of memory.  */


@@ -147,10 +304,6 @@ extern void free __P ((__ptr_t __ptr));
 #ifdef __USE_MISC
 /* Free a block.  An alias for `free'. (Sun Unices).  */
 extern void cfree __P ((__ptr_t __ptr));
 #ifdef __USE_MISC
 /* Free a block.  An alias for `free'. (Sun Unices).  */
 extern void cfree __P ((__ptr_t __ptr));

-
-#ifdef __OPTIMIZE__
-#define        cfree(ptr)      free(ptr)
-#endif /* Optimizing.  */

 #endif /* Use misc.  */
 
 #if defined(__USE_GNU) || defined(__USE_BSD) || defined(__USE_MISC)
 #endif /* Use misc.  */
 
 #if defined(__USE_GNU) || defined(__USE_BSD) || defined(__USE_MISC)


@@ -163,17 +316,8 @@ extern __ptr_t valloc __P ((size_t __size));
 #endif
 
 
 #endif
 
 

-#ifndef        __NORETURN
-#ifdef __GNUC__
-/* The `volatile' keyword tells GCC that a function never returns.  */
-#define        __NORETURN      __volatile
-#else /* Not GCC.  */
-#define        __NORETURN
-#endif /* GCC.  */
-#endif /* __NORETURN not defined.  */
-

 /* Abort execution and generate a core-dump.  */
 /* Abort execution and generate a core-dump.  */

-extern __NORETURN void abort __P ((void));
+extern void abort __P ((void)) __attribute__ ((__noreturn__));

 
 
 /* Register a function to be called when `exit' is called.  */
 
 
 /* Register a function to be called when `exit' is called.  */


@@ -189,7 +333,7 @@ extern int on_exit __P ((void (*__func) (int __status, __ptr_t __arg),
 /* 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.  */
 /* 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 __NORETURN void exit __P ((int __status));
+extern void exit __P ((int __status)) __attribute__ ((__noreturn__));

 
 
 /* Return the value of envariable NAME, or NULL if it doesn't exist.  */
 
 
 /* Return the value of envariable NAME, or NULL if it doesn't exist.  */


@@ -207,6 +351,9 @@ extern int putenv __P ((__const char *__string));
    If REPLACE is nonzero, overwrite an existing value.  */
 extern int setenv __P ((__const char *__name, __const char *__value,
                        int __replace));
    If REPLACE is nonzero, overwrite an existing value.  */
 extern int setenv __P ((__const char *__name, __const char *__value,
                        int __replace));

+
+/* Remove the variable NAME from the environment.  */
+extern void unsetenv __P ((__const char *__name));

 #endif
 
 /* Execute the given line as a shell command.  */
 #endif
 
 /* Execute the given line as a shell command.  */


@@ -214,7 +361,10 @@ extern int system __P ((__const char *__command));
 
 
 /* Shorthand for type of comparison functions.  */
 
 
 /* Shorthand for type of comparison functions.  */

+#ifndef __COMPAR_FN_T
+#define __COMPAR_FN_T

 typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t));
 typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t));

+#endif

 
 #ifdef __USE_GNU
 typedef __compar_fn_t comparison_fn_t;
 
 #ifdef __USE_GNU
 typedef __compar_fn_t comparison_fn_t;


@@ -232,26 +382,44 @@ extern void qsort __P ((__ptr_t __base, size_t __nmemb, size_t __size,
                        __compar_fn_t __compar));
 
 
                        __compar_fn_t __compar));
 
 

-#ifndef        __CONSTVALUE
-#ifdef __GNUC__
-/* The `const' keyword tells GCC that a function's return value is
-   based solely on its arguments, and there are no side-effects.  */
-#define        __CONSTVALUE    __const
-#else
-#define        __CONSTVALUE
-#endif /* GCC.  */
-#endif /* __CONSTVALUE not defined.  */
-

 /* Return the absolute value of X.  */
 /* Return the absolute value of X.  */

-extern __CONSTVALUE int abs __P ((int __x));
-extern __CONSTVALUE long int labs __P ((long int __x));
+extern int abs __P ((int __x)) __attribute__ ((__const__));
+extern long int labs __P ((long int __x)) __attribute__ ((__const__));

 
 
 /* Return the `div_t' or `ldiv_t' representation
    of the value of NUMER over DENOM. */
 /* GCC may have built-ins for these someday.  */
 
 
 /* Return the `div_t' or `ldiv_t' representation
    of the value of NUMER over DENOM. */
 /* GCC may have built-ins for these someday.  */

-extern __CONSTVALUE div_t div __P ((int __numer, int __denom));
-extern __CONSTVALUE ldiv_t ldiv __P ((long int __numer, long int __denom));
+extern div_t div __P ((int __numer, int __denom)) __attribute__ ((__const__));
+extern ldiv_t ldiv __P ((long int __numer, long int __denom)) __attribute__ ((__const__));
+
+
+#ifdef __USE_SVID
+/* Convert floating point numbers to strings.  The returned values are
+   valid only until another call to the same function.  */
+
+/* Convert VALUE to a string with NDIGIT digits and return a pointer to
+   this.  Set *DECPT with the position of the decimal character and *SIGN
+   with the sign of the number.  */
+char *ecvt __P ((double __value, int __ndigit, int *__decpt, int *sign));
+
+/* Convert VALUE to a string rounded to NDIGIT decimal digits.  Set *DECPT
+   with the position of the decimal character and *SIGN with the sign of
+   the number.  */
+char *fcvt __P ((double __value, int __ndigit, int *__decpt, int *sign));
+
+/* If possible convert VALUE to a string with NDIGIT significant digits.
+   Otherwise use exponential representation.  The resulting string will
+   be written to BUF.  */
+char *gcvt __P ((double __value, int __ndigit, char *__buf));
+
+/* Reentrant version of the functions above which provide their own
+   buffers.  */
+int ecvt_r __P ((double __value, int __ndigit, int *__decpt, int *sign,
+                char *__buf, size_t __len));
+int fcvt_r __P ((double __value, int __ndigit, int *__decpt, int *sign,
+                char *__buf, size_t __len));
+#endif

 
 
 /* Return the length of the multibyte character
 
 
 /* Return the length of the multibyte character


@@ -264,9 +432,10 @@ extern int mbtowc __P ((wchar_t * __pwc, __const char *__s, size_t __n));
    by WCHAR in S, returning its length.  */
 extern int wctomb __P ((char *__s, wchar_t __wchar));
 
    by WCHAR in S, returning its length.  */
 extern int wctomb __P ((char *__s, wchar_t __wchar));
 

-#ifdef __OPTIMIZE__
-#define        mblen(s, n)     mbtowc((wchar_t *) NULL, (s), (n))
-#endif /* Optimizing.  */
+#if defined (__OPTIMIZE__) && __GNUC__ >= 2
+extern __inline int mblen (__const char *__s, size_t __n)
+{ return mbtowc ((wchar_t *) NULL, __s, __n); }
+#endif /* Optimizing GCC >=2.  */

 
 
 /* Convert a multibyte string to a wide char string.  */
 
 
 /* Convert a multibyte string to a wide char string.  */


@@ -275,6 +444,15 @@ extern size_t mbstowcs __P ((wchar_t * __pwcs, __const char *__s, size_t __n));
 extern size_t wcstombs __P ((char *__s, __const wchar_t * __pwcs, size_t __n));
 
 
 extern size_t wcstombs __P ((char *__s, __const wchar_t * __pwcs, size_t __n));
 
 

+#ifdef __USE_SVID
+/* Determine whether the string value of RESPONSE matches the affirmation
+   or negative response expression as specified by the LC_MESSAGES category
+   in the program's current locale.  Returns 1 if affirmative, 0 if
+   negative, and -1 if not matching.  */
+extern int rpmatch __P ((__const char *__response));
+#endif
+
+

 __END_DECLS
 
 #endif /* stdlib.h  */
 __END_DECLS
 
 #endif /* stdlib.h  */