github.com/afumu/libc@v0.0.6/musl/src/network/ntohl.c (about)

     1  #include <netinet/in.h>
     2  #include <byteswap.h>
     3  
     4  uint32_t ntohl(uint32_t n)
     5  {
     6  	union { int i; char c; } u = { 1 };
     7  	return u.c ? bswap_32(n) : n;
     8  }