/**************************************************************************** * 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 #include #include #include #include #include #include #include #include /**************************************************************************** * 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 */