[realtek-ambz] Describe C library functions
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Kuba Szczodrzyński
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docs/platform/realtek-ambz/stdlib.md
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docs/platform/realtek-ambz/stdlib.md
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# C library
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The following is an auto-generated list of C standard library definitions included in the SDK. `Location` column contains the location of a matching symbol.
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## ctype.h
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### Character classification functions
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Definition | Value | Location
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-----------|------------|---------
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`isalnum` | |
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`isalpha` | |
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`isblank` | |
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`iscntrl` | |
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`isdigit` | `in_range` |
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`isgraph` | |
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`islower` | `in_range` |
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`isprint` | `in_range` |
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`ispunct` | |
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`isspace` | |
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`isupper` | |
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`isxdigit` | |
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## stdarg.h
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Definition | Value | Location
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-----------|----------------------|---------
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`va_start` | `__builtin_va_start` |
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`va_arg` | `__builtin_va_arg` |
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`va_end` | `__builtin_va_end` |
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`va_copy` | `__builtin_va_copy` |
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## stddef.h
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Definition | Value | Location
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--------------|---------------------|---------
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`ptrdiff_t` | `long int` |
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`size_t` | `long unsigned int` |
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`max_align_t` | |
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`nullptr_t` | |
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`NULL` | |
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## stdint.h
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### Types
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Definition | Value | Location
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-----------------|----------------------|---------
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`intmax_t` | `long int` |
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`uintmax_t` | `long unsigned int` |
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`int8_t` | `signed char` |
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`uint8_t` | `unsigned char` |
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`int16_t` | `short int` |
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`uint16_t` | `short unsigned int` |
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`int32_t` | `int` |
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`uint32_t` | `unsigned int` |
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`int64_t` | `long int` |
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`uint64_t` | `long unsigned int` |
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`int_least8_t` | `signed char` |
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`uint_least8_t` | `unsigned char` |
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`int_least16_t` | `short int` |
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`uint_least16_t` | `short unsigned int` |
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`int_least32_t` | `int` |
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`uint_least32_t` | `unsigned int` |
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`int_least64_t` | `long int` |
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`uint_least64_t` | `long unsigned int` |
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`int_fast8_t` | `signed char` |
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`uint_fast8_t` | `unsigned char` |
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`int_fast16_t` | `long int` |
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`uint_fast16_t` | `long unsigned int` |
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`int_fast32_t` | `long int` |
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`uint_fast32_t` | `long unsigned int` |
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`int_fast64_t` | `long int` |
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`uint_fast64_t` | `long unsigned int` |
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`intptr_t` | `long int` |
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`uintptr_t` | `long unsigned int` |
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## stdio.h
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### Formatted input/output
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Definition | Value | Location
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------------|-----------------|-----------------
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`fprintf` | |
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`fscanf` | |
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`printf` | `rtl_printf` | `lib_rtlstd.a`
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`scanf` | |
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`snprintf` | `rtl_snprintf` | `lib_rtlstd.a`
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`sprintf` | `rtl_sprintf` | `lib_rtlstd.a`
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`sscanf` | `_sscanf_patch` | `lib_platform.a`
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`vfprintf` | |
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`vfscanf` | |
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`vprintf` | |
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`vscanf` | |
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`vsnprintf` | `rtl_vsnprintf` | `lib_rtlstd.a`
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`vsprintf` | |
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`vsscanf` | |
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### Error-handling
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Definition | Value | Location
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-----------|---------------|-------------
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`clearerr` | `__sclearerr` |
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`feof` | `__sfeof` |
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`ferror` | `__sferror` |
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`perror` | | `lib_mdns.a`
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## stdlib.h
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### String conversion
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Definition | Value | Location
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-----------|------------------|---------
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`atof` | |
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`atoi` | `prvAtoi` | ROM
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`atol` | `simple_strtol` | ROM
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`atoll` | |
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`strtod` | |
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`strtof` | |
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`strtol` | `simple_strtol` | ROM
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`strtold` | |
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`strtoll` | |
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`strtoul` | `simple_strtoul` | ROM
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`strtoull` | |
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### Pseudo-random sequence generation
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Definition | Value | Location
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-----------|--------|---------
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`rand` | `Rand` | ROM
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`srand` | |
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### Dynamic memory management
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Definition | Value | Location
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-----------|----------------|---------
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`calloc` | |
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`free` | `vPortFree` | SDK
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`malloc` | `pvPortMalloc` | SDK
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`realloc` | |
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## string.h
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### Copying
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Definition | Value | Location
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-----------|-----------------------|---------
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`memcpy` | `_memcpy` | ROM
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`memmove` | `__rtl_memmove_v1_00` | ROM
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`strcpy` | `_strcpy` | ROM
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`strncpy` | `_strncpy` | ROM
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### Concatenation
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Definition | Value | Location
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-----------|-----------------------|---------
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`strcat` | `__rtl_strcat_v1_00` | ROM
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`strncat` | `__rtl_strncat_v1_00` | ROM
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### Comparison
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Definition | Value | Location
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-----------|-------------|---------
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`memcmp` | `_memcmp` | ROM
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`strcmp` | `prvStrCmp` | ROM
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`strcoll` | |
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`strncmp` | `_strncmp` | ROM
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`strxfrm` | |
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### Searching
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Definition | Value | Location
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-----------|----------------------|---------
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`memchr` | `__rtl_memchr_v1_00` | ROM
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`strchr` | `_strchr` | ROM
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`strcspn` | |
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`strpbrk` | `_strpbrk` | ROM
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`strrchr` | |
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`strspn` | |
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`strstr` | `prvStrStr` | ROM
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`strtok` | `prvStrtok` | ROM
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### Other
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Definition | Value | Location
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-----------|-------------|---------
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`memset` | `_memset` | ROM
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`strerror` | |
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`strlen` | `prvStrLen` | ROM
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