cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/modfl.c -o math/modfl -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
math/modfl.c:5:50: error: ‘modfl’ undeclared here (not in a function); did you mean ‘modff’?
    5 | long double (*foo)(long double, long double *) = modfl;
      |                                                  ^~~~~
      |                                                  modff