293 lines
8.3 KiB
C
293 lines
8.3 KiB
C
/****************************************************************************
|
|
* include/stdlib.h
|
|
*
|
|
* Copyright (C) 2007-2016, 2018 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __INCLUDE_STDLIB_H
|
|
#define __INCLUDE_STDLIB_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <nuttx/compiler.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdint.h>
|
|
#include <limits.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/* The C standard specifies two constants, EXIT_SUCCESS and EXIT_FAILURE,
|
|
* that may be passed to exit() to indicate successful or unsuccessful
|
|
* termination, respectively.
|
|
*/
|
|
|
|
#define EXIT_SUCCESS 0
|
|
#define EXIT_FAILURE 1
|
|
|
|
/* The NULL pointer should be defined in this file but is currently defined
|
|
* in sys/types.h.
|
|
*/
|
|
|
|
/* Maximum value returned by rand(). Must be a minimum of 32767. */
|
|
|
|
#define RAND_MAX INT_MAX
|
|
|
|
/* Integer expression whose value is the maximum number of bytes in a
|
|
* character specified by the current locale.
|
|
*/
|
|
|
|
#define MB_CUR_MAX 1
|
|
|
|
/* The environ variable, normally 'char **environ;' is not implemented as a
|
|
* function call. However, get_environ_ptr() can be used in its place.
|
|
*/
|
|
|
|
#ifndef CONFIG_DISABLE_ENVIRON
|
|
# define environ get_environ_ptr()
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Type Definitions
|
|
****************************************************************************/
|
|
|
|
struct mallinfo
|
|
{
|
|
int arena; /* This is the total size of memory allocated
|
|
* for use by malloc in bytes. */
|
|
int ordblks; /* This is the number of free (not in use) chunks */
|
|
int mxordblk; /* Size of the largest free (not in use) chunk */
|
|
int uordblks; /* This is the total size of memory occupied by
|
|
* chunks handed out by malloc. */
|
|
int fordblks; /* This is the total size of memory occupied
|
|
* by free (not in use) chunks.*/
|
|
};
|
|
|
|
/* Structure type returned by the div() function. */
|
|
|
|
struct div_s
|
|
{
|
|
int quot; /* Quotient */
|
|
int rem; /* Remainder */
|
|
};
|
|
|
|
typedef struct div_s div_t;
|
|
|
|
/* Structure type returned by the ldiv() function. */
|
|
|
|
struct ldiv_s
|
|
{
|
|
long quot; /* Quotient */
|
|
long rem; /* Remainder */
|
|
};
|
|
|
|
typedef struct ldiv_s ldiv_t;
|
|
|
|
/* Structure type returned by the lldiv() function. */
|
|
|
|
struct lldiv_s
|
|
{
|
|
long quot; /* Quotient */
|
|
long rem; /* Remainder */
|
|
};
|
|
|
|
typedef struct lldiv_s lldiv_t;
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
/* Random number generation */
|
|
|
|
void srand(unsigned int seed);
|
|
int rand(void);
|
|
|
|
#define srandom(s) srand(s)
|
|
long random(void);
|
|
|
|
#ifndef CONFIG_DISABLE_ENVIRON
|
|
/* Environment variable support */
|
|
|
|
FAR char **get_environ_ptr(void);
|
|
FAR char *getenv(FAR const char *name);
|
|
int putenv(FAR const char *string);
|
|
int clearenv(void);
|
|
int setenv(FAR const char *name, FAR const char *value, int overwrite);
|
|
int unsetenv(FAR const char *name);
|
|
#endif
|
|
|
|
/* Process exit functions */
|
|
|
|
void exit(int status) noreturn_function;
|
|
void abort(void) noreturn_function;
|
|
#ifdef CONFIG_SCHED_ATEXIT
|
|
int atexit(CODE void (*func)(void));
|
|
#endif
|
|
#ifdef CONFIG_SCHED_ONEXIT
|
|
int on_exit(CODE void (*func)(int, FAR void *), FAR void *arg);
|
|
#endif
|
|
|
|
/* _Exit() is a stdlib.h equivalent to the unistd.h _exit() function */
|
|
|
|
void _exit(int status); /* See unistd.h */
|
|
#define _Exit(s) _exit(s)
|
|
|
|
/* System() command is not implemented in the NuttX libc because it is so
|
|
* entangled with shell logic. There is an experimental version at
|
|
* apps/system/system. system() is prototyped here, however, for
|
|
* standards compatibility.
|
|
*/
|
|
|
|
#ifndef __KERNEL__
|
|
int system(FAR const char *cmd);
|
|
#endif
|
|
|
|
/* String to binary conversions */
|
|
|
|
long strtol(FAR const char *nptr, FAR char **endptr, int base);
|
|
unsigned long strtoul(FAR const char *nptr, FAR char **endptr, int base);
|
|
#ifdef CONFIG_HAVE_LONG_LONG
|
|
long long strtoll(FAR const char *nptr, FAR char **endptr, int base);
|
|
unsigned long long strtoull(FAR const char *nptr, FAR char **endptr,
|
|
int base);
|
|
#endif
|
|
float strtof(FAR const char *str, FAR char **endptr);
|
|
#ifdef CONFIG_HAVE_DOUBLE
|
|
double strtod(FAR const char *str, FAR char **endptr);
|
|
#endif
|
|
#ifdef CONFIG_HAVE_LONG_DOUBLE
|
|
long double strtold(FAR const char *str, FAR char **endptr);
|
|
#endif
|
|
|
|
#define atoi(nptr) ((int)strtol((nptr), NULL, 10))
|
|
#define atol(nptr) strtol((nptr), NULL, 10)
|
|
#ifdef CONFIG_HAVE_LONG_LONG
|
|
#define atoll(nptr) strtoll((nptr), NULL, 10)
|
|
#endif
|
|
#ifdef CONFIG_HAVE_DOUBLE
|
|
#define atof(nptr) strtod((nptr), NULL)
|
|
#endif
|
|
|
|
/* Binary to string conversions */
|
|
|
|
FAR char *itoa(int val, FAR char *str, int base);
|
|
|
|
/* Wide character operations */
|
|
|
|
#ifdef CONFIG_LIBC_WCHAR
|
|
int mbtowc(FAR wchar_t *pwc, FAR const char *s, size_t n);
|
|
int wctomb(FAR char *s, wchar_t wchar);
|
|
#endif
|
|
|
|
/* Memory Management */
|
|
|
|
FAR void *malloc(size_t);
|
|
void free(FAR void *);
|
|
FAR void *realloc(FAR void *, size_t);
|
|
FAR void *memalign(size_t, size_t);
|
|
FAR void *zalloc(size_t);
|
|
FAR void *calloc(size_t, size_t);
|
|
|
|
#ifdef CONFIG_CAN_PASS_STRUCTS
|
|
struct mallinfo mallinfo(void);
|
|
#else
|
|
int mallinfo(FAR struct mallinfo *info);
|
|
#endif
|
|
|
|
/* Pseudo-Terminals */
|
|
|
|
#ifdef CONFIG_PSEUDOTERM_SUSV1
|
|
FAR char *ptsname(int fd);
|
|
int ptsname_r(int fd, FAR char *buf, size_t buflen);
|
|
#endif
|
|
|
|
#ifdef CONFIG_PSEUDOTERM
|
|
int unlockpt(int fd);
|
|
|
|
/* int grantpt(int fd); Not implemented */
|
|
|
|
#define grantpt(fd) (0)
|
|
#endif
|
|
|
|
/* Arithmetic */
|
|
|
|
int abs(int j);
|
|
long int labs(long int j);
|
|
#ifdef CONFIG_HAVE_LONG_LONG
|
|
long long int llabs(long long int j);
|
|
#endif
|
|
|
|
#ifdef CONFIG_CAN_PASS_STRUCTS
|
|
div_t div(int numer, int denom);
|
|
ldiv_t ldiv(long numer, long denom);
|
|
#ifdef CONFIG_HAVE_LONG_LONG
|
|
lldiv_t lldiv(long long numer, long long denom);
|
|
#endif
|
|
#endif
|
|
|
|
/* Temporary files */
|
|
|
|
int mktemp(FAR char *path_template);
|
|
int mkstemp(FAR char *path_template);
|
|
|
|
/* Sorting */
|
|
|
|
void qsort(FAR void *base, size_t nel, size_t width,
|
|
CODE int (*compar)(FAR const void *, FAR const void *));
|
|
|
|
/* Binary search */
|
|
|
|
FAR void *bsearch(FAR const void *key, FAR const void *base, size_t nel,
|
|
size_t width, CODE int (*compar)(FAR const void *,
|
|
FAR const void *));
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* __INCLUDE_STDLIB_H */
|