clang -O2  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations float/DBL_DECIMAL_DIG.c -o float/DBL_DECIMAL_DIG -D_POSIX_C_SOURCE=202405L  -lm  -lintl
float/DBL_DECIMAL_DIG.c:3:2: error: "DBL_DECIMAL_DIG is not defined"
#error "DBL_DECIMAL_DIG is not defined"
 ^
1 error generated.