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diff --git a/nuttx/include/stdlib.h b/nuttx/include/stdlib.h
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+/****************************************************************************
+ * include/stdlib.h
+ *
+ * Copyright (C) 2007-2012 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>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* The C standard specifies two constants, EXIT_SUCCESS and
+ * EXIT_FAILURE, that may be passed to exit() to indicate
+ * successful or unsucessful 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() */
+
+#define MAX_RAND 32767
+
+/* 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 'extern char **environ;' is
+ * not implemented as a function call. However, get_environ_ptr()
+ * can be used in its place.
+ */
+
+#ifndef CONFIG_DISABLE_ENIVRON
+# define environ get_environ_ptr()
+#endif
+
+/****************************************************************************
+ * Global 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.*/
+};
+
+/****************************************************************************
+ * Global Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* Random number generation */
+
+EXTERN void srand(unsigned int seed);
+EXTERN int rand(void);
+
+/* Environment variable support */
+
+#ifndef CONFIG_DISABLE_ENIVRON
+EXTERN FAR char **get_environ_ptr( void );
+EXTERN FAR char *getenv(FAR const char *name);
+EXTERN int putenv(FAR const char *string);
+EXTERN int clearenv(void);
+EXTERN int setenv(const char *name, const char *value, int overwrite);
+EXTERN int unsetenv(const char *name);
+#endif
+
+/* Process exit functions */
+
+EXTERN void exit(int status) noreturn_function;
+EXTERN void abort(void) noreturn_function;
+#ifdef CONFIG_SCHED_ATEXIT
+EXTERN int atexit(CODE void (*func)(void));
+#endif
+#ifdef CONFIG_SCHED_ONEXIT
+EXTERN int on_exit(CODE void (*func)(int, FAR void *), FAR void *arg);
+#endif
+
+/* String to binary conversions */
+
+EXTERN long strtol(const char *, char **, int);
+EXTERN unsigned long strtoul(const char *, char **, int);
+#ifdef CONFIG_HAVE_LONG_LONG
+EXTERN long long strtoll(const char *, char **, int);
+EXTERN unsigned long long strtoull(const char *, char **, int);
+#endif
+EXTERN double_t strtod(const char *, char **);
+
+#define atoi(nptr) strtol((nptr), NULL, 10)
+#define atol(nptr) strtol((nptr), NULL, 10)
+#ifdef CONFIG_HAVE_LONG_LONG
+#define atoll(nptr) strtoll((nptr), NULL, 10)
+#endif
+#define atof(nptr) strtod((nptr), NULL)
+
+/* Memory Management */
+
+EXTERN FAR void *malloc(size_t);
+EXTERN void free(FAR void*);
+EXTERN FAR void *realloc(FAR void*, size_t);
+EXTERN FAR void *memalign(size_t, size_t);
+EXTERN FAR void *zalloc(size_t);
+EXTERN FAR void *calloc(size_t, size_t);
+
+/* Misc */
+
+EXTERN int abs(int j);
+EXTERN long int labs(long int j);
+#ifdef CONFIG_HAVE_LONG_LONG
+EXTERN long long int llabs(long long int j);
+#endif
+
+/* Sorting */
+
+EXTERN void qsort(void *base, size_t nmemb, size_t size,
+ int(*compar)(const void *, const void *));
+
+#ifdef CONFIG_CAN_PASS_STRUCTS
+EXTERN struct mallinfo mallinfo(void);
+#else
+EXTERN int mallinfo(struct mallinfo *info);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_STDLIB_H */