Why is there no WORD_BIT in limits.h on Linux?

From the manpage man limits.h:

{WORD_BIT}
             Number of bits in an object of type int.
             Minimum Acceptable Value: 32

However if I run a simple program:

#include 
#include 

int main() {
  printf("%d\n", WORD_BIT);
  return 0;
}

However when trying to compile with gcc (gcc file.c -o file) I get the following: error: ‘WORD_BIT’ undeclared (first use in this function) How come this is not defined on my system, and where else can I find this information (in a C program)? My system: * Fedora 36 (Silverblue) * gcc version 12.2.1 20220819 (Red Hat 12.2.1-1) (GCC) * ldd (GNU libc) 2.35