cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/nearbyint.c -o math/nearbyint -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
math/nearbyint.c:5:25: error: ‘nearbyint’ undeclared here (not in a function)
    5 | double (*foo)(double) = nearbyint;
      |                         ^~~~~~~~~