cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/tgammal.c -o math/tgammal -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
math/tgammal.c:5:35: error: ‘tgammal’ undeclared here (not in a function); did you mean ‘tgamma’?
    5 | long double (*foo)(long double) = tgammal;
      |                                   ^~~~~~~
      |                                   tgamma