Searching for "Numerical Recipes in C" on GitHub primarily reveals community-maintained mirrors, unofficial ports, and educational repositories rather than a single "official" repository. This is because the original code from the Numerical Recipes proprietary
Solutions for root finding, Fourier transforms, statistical analysis, and more. numerical recipes in c github
In the past, buyers of the book received a floppy disk or a CD-ROM containing the source code. Today, developers expect code to be available via git clone . They want to see the code in their IDEs, compare versions, and perhaps most importantly, they want to see if the community has "modernized" the C code. Searching for "Numerical Recipes in C" on GitHub