cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/nexttowardf.c -o math/nexttowardf -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
math/nexttowardf.c:5:36: error: ‘nexttowardf’ undeclared here (not in a function); did you mean ‘nexttoward’?
    5 | float (*foo)(float, long double) = nexttowardf;
      |                                    ^~~~~~~~~~~
      |                                    nexttoward