cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/FP_FAST_FMA.c -o math/FP_FAST_FMA -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
math/FP_FAST_FMA.c:4:2: error: #error "FP_FAST_FMA is not defined"
    4 | #error "FP_FAST_FMA is not defined"
      |  ^~~~~