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The ARM C and C++ libraries

Mandatory linkage with the C library

C and C++ runtime libraries

C and C++ library features

Library heap usage requirements of the ARM C and C

Compliance with the Application Binary Interface (

Increasing portability of object files to other CL

ARM C and C++ library directory structure

Selection of ARM C and C++ library variants based

Thumb C libraries

C++ and C libraries and the std namespace

ARM C libraries and multithreading

ARM C libraries and reentrant functions

ARM C libraries and thread-safe functions

Use of static data in the C libraries

Use of the __user_libspace static data area by the

C library functions to access subsections of the _

Re-implementation of legacy function __user_libspa

Management of locks in multithreaded applications

How to ensure re-implemented mutex functions are c

Using the ARM C library in a multithreaded environ

Thread safety in the ARM C library

Thread safety in the ARM C++ library

The floating-point status word in a multithreaded

Using the C library with an application

Using the C and C++ libraries with an application

Using $Sub$$ to mix semihosted and nonsemihosted I

Using the libraries in a nonsemihosting environmen

C++ exceptions in a non-semihosting environment

Direct semihosting C library function dependencies

Indirect semihosting C library function dependenci

C library API definitions for targeting a differen

Building an application without the C library

Creating an application as bare machine C without

Integer and floating-point compiler functions and

Bare machine integer C

Bare machine C with floating-point processing

Customized C library startup code and access to C

Program design when exploiting the C library

Using low-level functions when exploiting the C li

Using high-level functions when exploiting the C l

Using malloc() when exploiting the C library

Tailoring the C library to a new execution environ

How C and C++ programs use the library functions

Initialization of the execution environment and ex

C++ initialization, construction and destruction

Legacy support for C$$pi_ctorvec instead of .init_

Exceptions system initialization

Emergency buffer memory for exceptions

Library functions called from main()

Program exit and the assert macro

Assembler macros that tailor locale functions in t

Link time selection of the locale subsystem in the

ISO8859-1 implementation

Shift-JIS and UTF-8 implementation

Runtime selection of the locale subsystem in the C

Definition of locale data blocks in the C library

LC_CTYPE data block

LC_COLLATE data block

LC_MONETARY data block

LC_NUMERIC data block

LC_TIME data block

Modification of C library functions for error sign

Modification of memory management functions in the

Avoiding the heap and heap-using library functions

C library support for memory allocation functions

Heap1, standard heap implementation

Heap2, alternative heap implementation

Using a heap implementation from bare machine C

Stack pointer initialization and heap bounds

Defining __initial_sp, __heap_base and __heap_limi

Extending heap size at runtime

Legacy support for __user_initial_stackheap()

Tailoring input/output functions in the C and C++

Target dependencies on low-level functions in the

The C library printf family of functions

The C library scanf family of functions

Redefining low-level library functions to enable d

The C library functions fread(), fgets() and gets(

Re-implementing __backspace() in the C library

Re-implementing __backspacewc() in the C library

Redefining target-dependent system I/O functions i

Tailoring non-input/output C library functions

Real-time integer division in the ARM libraries

Selecting real-time division in the ARM libraries

How the ARM C library fulfills ISO C specification

mathlib error handling

ISO-compliant implementation of signals supported

ISO-compliant C library input/output characteristi

Standard C++ library implementation definition

C library functions and extensions

Persistence of C and C++ library names across rele

Link time selection of C and C++ libraries

Managing projects that have explicit C or C++ libr

Compiler generated and library-resident helper fun

C and C++ library naming conventions

Using macro__ARM_WCHAR_NO_IO to disable FILE decla

The ARM C micro-library

Floating-point support

Re-implementing __backspacewc() in the C library

ARM Compiler toolchain v5.02 for µVision Using ARM C and C++ Libraries and Floating-Point Support

Home > The ARM C and C++ libraries > Re-implementing __backspacewc() in the C library

Re-implementing __backspacewc() in the C library

__backspacewc() is the wide-character equivalent of __backspace(). __backspacewc() behaves in the same way as __backspace() except that it pushes back the last wide character instead of a narrow character.

See also

Tasks

Tailoring input/output functions in the C and C++ libraries.

Reference

Re-implementing __backspace() in the C library.

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