Real programming thread

Share high-quality, well tested libraries aimed at filling an important gap in actual programming to help solve real-world problems without reinventing the wheel.

https://github.com/tjmehta/is-positive-integer

>>3
I doubt FrozenVoid even heard about SICP.

And why does he use bat files for compilation and gcc line includes every single switch?
@gcc %1.c -o %1 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE64_SOURCE=1 -pipe -std=gnu11 -fmax-errors=1 -Wall -Wno-unused -Wno-unused-parameter -Wno-unused-function -Wno-unused-label -Wno-multichar -Wno-deprecated-declarations -Wno-unused-value -Wno-unused-variable -Wno-unused-but-set-parameter -Ofast -fplan9-extensions -fverbose-asm -fopenmp -flto -fno-exceptions -funswitch-loops -fpeel-loops -funroll-loops -frename-registers -fno-common -fprefetch-loop-arrays -fvariable-expansion-in-unroller -fivopts -finline-limit=3000 -march=native -mtune=native -m64 -msse4.2 -fmerge-all-constants -s -lopengl32 -Wl,--stack,2097152 -Wl,-O3