void main()
{
unsigned int a[] ={ 4, 5, 22, 64};
int i;
for(i=0;i<4;i++)
printf("%d : %d\n", a[i], ispowerof2(a[i]));
}
static void configpagelen(runconfig *const cfg, const unsigned arg)
{
const long sysplen = sysconf(_SC_PAGESIZE);
if(sysplen != -1) { } else
{
fail("can't get system pagesize");
}
if(sysplen < 0x7fffffff) { } else
{
fail("system page length %ld is too long", sysplen);
}
unsigned flags = 0;
unsigned plen = sysplen;
const long alen = arg * 1024;
if(alen < 0x7fffffff) { } else
{
fail("argument page length %ld is too long", alen);
}
if(alen > 0)
{
if(ispowerof2(alen) && alen > sysplen)
{
plen = alen;
flags |= cfghugetlb;
}
else
{
fail("%u don't look like huge page length in KiB", arg);
}
}
cfg->flags |= flags;
cfg->pagelength = plen;
}
bool Aligned::supports ( size_t alignment )
{
return (ispowerof2(alignment));
}
