279 lines
7.8 KiB
C
279 lines
7.8 KiB
C
/****************************************************************************
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* include/stdlib.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 4
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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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#ifdef CONFIG_DISABLE_ENVIRON
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# define environ NULL
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#else
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# define environ get_environ_ptr()
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#endif
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#if defined(CONFIG_FS_LARGEFILE) && defined(CONFIG_HAVE_LONG_LONG)
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# define mkstemp64 mkstemp
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# define mkostemp64 mkostemp
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# define mkstemps64 mkstemps
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# define mkostemps64 mkostemps
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#endif
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#define strtof_l(s, e, l) strtof(s, e)
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#define strtod_l(s, e, l) strtod(s, e)
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#define strtold_l(s, e, l) strtold(s, e)
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#define strtoll_l(s, e, b, l) strtoll(s, e, b)
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#define strtoull_l(s, e, b, l) strtoull(s, e, b)
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/****************************************************************************
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* Public Type Definitions
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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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#ifdef CONFIG_CRYPTO_RANDOM_POOL
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void arc4random_buf(FAR void *bytes, size_t nbytes);
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#endif
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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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/* 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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int atexit(CODE void (*func)(void));
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int on_exit(CODE void (*func)(int, FAR void *), FAR void *arg);
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/* _Exit() is a stdlib.h equivalent to the unistd.h _exit() function */
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void _Exit(int status) noreturn_function;
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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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FAR char *realpath(FAR const char *path, FAR char *resolved);
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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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int atoi(FAR const char *nptr);
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long atol(FAR const char *nptr);
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#ifdef CONFIG_HAVE_LONG_LONG
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long long atoll(FAR const char *nptr);
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#endif
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#ifdef CONFIG_HAVE_DOUBLE
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double atof(FAR const char *nptr);
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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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int mblen(FAR const char *s, size_t n);
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int mbtowc(FAR wchar_t *pwc, FAR const char *s, size_t n);
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size_t mbstowcs(FAR wchar_t *dst, FAR const char *src, size_t len);
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int wctomb(FAR char *s, wchar_t wchar);
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size_t wcstombs(FAR char *dst, FAR const wchar_t *src, size_t len);
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/* Memory Management */
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FAR void *malloc(size_t);
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FAR void *valloc(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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FAR void *aligned_alloc(size_t, size_t);
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int posix_memalign(FAR void **, size_t, size_t);
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/* Pseudo-Terminals */
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#ifdef CONFIG_PSEUDOTERM
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int posix_openpt(int oflag);
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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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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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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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/* Temporary files */
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FAR char *mktemp(FAR char *path_template);
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int mkstemp(FAR char *path_template);
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FAR char *mkdtemp(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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/* Current program name manipulation */
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FAR const char *getprogname(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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