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