/****************************************************************************
* libs/libc/libc.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __LIBC_LIBC_H
#define __LIBC_LIBC_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <semaphore.h>
#include <nuttx/kmalloc.h>
#include <nuttx/streams.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* This configuration directory is used in environment variable processing
* when we need to reference the user's home directory. There are no user
* directories in NuttX so, by default, this always refers to the root
* directory.
*/
#ifndef CONFIG_LIB_HOMEDIR
# define CONFIG_LIB_HOMEDIR "/"
#endif
/* If C std I/O buffering is not supported, then we don't need its semaphore
* protection.
*/
#ifdef CONFIG_STDIO_DISABLE_BUFFERING
# define lib_sem_initialize(s)
# define lib_take_semaphore(s)
# define lib_give_semaphore(s)
#endif
/* The NuttX C library an be build in two modes: (1) as a standard, C-library
* that can be used by normal, user-space applications, or (2) as a special,
* kernel-mode C-library only used within the OS. If NuttX is not being
* built as separated kernel- and user-space modules, then only the first
* mode is supported.
*/
#if !defined(CONFIG_BUILD_FLAT) && defined(__KERNEL__)
/* Domain-specific allocations */
# define lib_malloc(s) kmm_malloc(s)
# define lib_zalloc(s) kmm_zalloc(s)
# define lib_realloc(p,s) kmm_realloc(p,s)
# define lib_memalign(p,s) kmm_memalign(p,s)
# define lib_free(p) kmm_free(p)
/* User-accessible allocations */
# define lib_umalloc(s) kumm_malloc(s)
# define lib_uzalloc(s) kumm_zalloc(s)
# define lib_urealloc(p,s) kumm_realloc(p,s)
# define lib_umemalign(p,s) kumm_memalign(p,s)
# define lib_ufree(p) kumm_free(p)
#else
/* Domain-specific allocations */
# define lib_malloc(s) malloc(s)
# define lib_zalloc(s) zalloc(s)
# define lib_realloc(p,s) realloc(p,s)
# define lib_memalign(p,s) memalign(p,s)
# define lib_free(p) free(p)
/* User-accessible allocations */
# define lib_umalloc(s) malloc(s)
# define lib_uzalloc(s) zalloc(s)
# define lib_urealloc(p,s) realloc(p,s)
# define lib_umemalign(p,s) memalign(p,s)
# define lib_ufree(p) free(p)
#endif
#define LIB_BUFLEN_UNKNOWN INT_MAX
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* Defined in lib_streamsem.c */
#if CONFIG_NFILE_STREAMS > 0
void stream_semtake(FAR struct streamlist *list);
void stream_semgive(FAR struct streamlist *list);
#endif
/* Defined in lib_dtoa.c */
#ifdef CONFIG_LIBC_FLOATINGPOINT
FAR char *__dtoa(double d, int mode, int ndigits, FAR int *decpt,
FAR int *sign, FAR char **rve);
#endif
/* Defined in lib_fopen.c */
int lib_mode2oflags(FAR const char *mode);
/* Defined in lib_libfwrite.c */
ssize_t lib_fwrite(FAR const void *ptr, size_t count, FAR FILE *stream);
/* Defined in lib_libfread.c */
ssize_t lib_fread(FAR void *ptr, size_t count, FAR FILE *stream);
/* Defined in lib_libfgets.c */
FAR char *lib_fgets(FAR char *buf, size_t buflen, FILE *stream,
bool keepnl, bool consume);
/* Defined in lib_libfflush.c */
ssize_t lib_fflush(FAR FILE *stream, bool bforce);
/* Defined in lib_rdflush.c */
int lib_rdflush(FAR FILE *stream);
/* Defined in lib_wrflush.c */
int lib_wrflush(FAR FILE *stream);
/* Defined in lib_sem.c */
#ifndef CONFIG_STDIO_DISABLE_BUFFERING
void lib_sem_initialize(FAR struct file_struct *stream);
void lib_take_semaphore(FAR struct file_struct *stream);
void lib_give_semaphore(FAR struct file_struct *stream);
#endif
/* Defined in lib_libgetbase.c */
int lib_getbase(FAR const char *nptr, FAR const char **endptr);
/* Defined in lib_skipspace.c */
void lib_skipspace(FAR const char **pptr);
/* Defined in lib_isbasedigit.c */
bool lib_isbasedigit(int ch, int base, FAR int *value);
/* Defined in lib_checkbase.c */
int lib_checkbase(int base, FAR const char **pptr);
/* Defined in lib_expi.c */
#ifdef CONFIG_LIBM
float lib_expif(size_t n);
double lib_expi(size_t n);
#endif
/* Defined in lib_libsqrtapprox.c */
#ifdef CONFIG_LIBM
float lib_sqrtapprox(float x);
#endif
/* Defined in lib_parsehostfile.c */
#ifdef CONFIG_NETDB_HOSTFILE
struct hostent;
ssize_t lib_parse_hostfile(FAR FILE *stream, FAR struct hostent *host,
FAR char *buf, size_t buflen);
#endif
#ifndef CONFIG_DISABLE_ENVIRON
int lib_restoredir(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __LIBC_LIBC_H */