math: raise flags in log2l.c on <= 0 arguments, and fix volatile

[musl] / src / network / htonl.c

#include <netinet/in.h>
#include <byteswap.h>

uint32_t htonl(uint32_t n)
{
        union { int i; char c; } u = { 1 };
        return u.c ? bswap_32(n) : n;
}