cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/powl.c -o math/powl -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
math/powl.c:5:48: error: ‘powl’ undeclared here (not in a function); did you mean ‘powf’?
    5 | long double (*foo)(long double, long double) = powl;
      |                                                ^~~~
      |                                                powf