Recreating infamous printf function as described by standard C99.

Please refer to the fprintf format specification for information about supported features.

The current implementation follows strictly the C99 compliance, with the following known exceptions:

• long double (IEEE float 80) support has not been implemented.
• multibyte character (wchar_t) are not supported.
• %e as not been kept due to its incorrectness.

In case of invalid format, as specified by C99,our function will treat the given sequence as regular text and continue.

If you haven't already, consider installing Nix by following the instructions on nix installation page.

You can use the standard nix flakes commands to clone, build, ... this project.

nix build github:Sigmapitech/myprintf

outputs libmy.a containing my_printf.

0. Install the required dependencies

Make sure to have the following dependencies available within your environment:

• The Coreutils command set, which are expected to exist on every operating system.
• a recent version of Gnu make ~4.x.x
• GCC, preferably, version 13.x.x along the GNU C Library.
• The GNU ar archive program, provided by binutils.
• Optionally, tput command to support colors within the Makefile.
• criterion library to compile tests.
• gcovr to retrieve coverage report.

If you want to use the epitest container provided by Epitech, you can use the following command:

docker run -it --rm -v $(pwd):/home/project -w /home/project epitechcontent/epitest-docker:latest /bin/bash

I. Clone the repository

git clone https://github.com/Sigmapitech/myprintf.git myprintf
cd myprintf

II. Compile the library

make

To see other available targets, you can use a program such as fzf-make.

if you are using Nix, you can access a devShell that you can develop with the project dependencies to build and develop.

nix develop
nix develop github:Sigmapitech/myrpg

You may load the devShell automatically using direnv shell integration.

echo "use flake" | tee .envrc
direnv allow

A tester is provided to compared the implementation along-side printf from glibc. Test table only features defined behaviour described by the standard.

To run the tests and get a coverage report:

make cov