C Library

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The C standard library provides basic functionality such as string manipulation, basic I/O, and memory allocation. Whether you're writing a kernel in C or you plan on supporting existing C programs, you'll want to use it.

Types

The C standard describes two versions of the C standard library. The compleat, hosted, library and the freestanding one, providing only a subset of the hosted library that doesn't need to interact with the environment. System software should typically use the former, while applications should have the latter available.

Implementations

There exists a myraid of implementations of the standard library avalible at your disposal. Here are some of them:

• newlib
• glibc
• PDCLib
• uclibc
• musl
• dietlibc
• ccaprice

Using one of the aforementioned implementations may be a viable solution but you may instead wish to roll your own.

Standards

After deciding which version of the C standard you will write your project in, you will need to grab the appropriate specification to work from.

• C89/C90
  • ISO Publication
    • From SAI Global
  • AU Ratified
    • From ANSI
    • From SAI Global
  • UK Ratified
    • From ANSI
• C99
  • ISO Publication
    • From ANSI
    • From SAI Global
    • From ISO Store
• C11
  • ISO Publication
    • From ISO Store