path: root/test/bitfield.cc

#include <bitfield.h>

#include <cassert>
#include <cstdio>

BITFIELD_START(MOOSE, std::uint32_t)
FIELD(IO, 4, 7)
FIELD(EL, 16, 31)
BITFIELD_END()

int main() {
  MOOSE mo(0xab);

  auto io = mo.IO();
  auto el = mo.EL();

  assert(mo.val() == 0xab);
  assert(io.val() == 0xa);
  assert(el.val() == 0);

  io = 0x0;
  std::printf("reg %08x f %08x\n", mo.val(), io.val());
  assert(mo.val() == 0x0b);
  assert(io.val() == 0x0);
  assert(el.val() == 0);

  el = 0xfeef;
  std::printf("reg %08x f %08x\n", mo.val(), el.val());
  assert(mo.val() == 0xfeef000b);
  assert(io.val() == 0x0);
  assert(el.val() == 0xfeef);

  mo = 0xcafeu;
  assert(mo.val() == 0xcafe);
  assert(io.val() == 0xf);
  assert(el.val() == 0x0);

  assert(mo.val() == 0xcafe);
  mo |= 0xa00b0000;
  assert(mo.val() == 0xa00bcafe);
  assert(io.val() == 0xf);
  assert(el.val() == 0xa00b);

  assert(mo.val() == 0xa00bcafe);
  mo &= 0xffff0000;
  assert(mo.val() == 0xa00b0000);
  assert(io.val() == 0x0);
  assert(el.val() == 0xa00b);

  el |= 0xc0;
  assert(mo.val() == 0xa0cb0000);
  assert(io.val() == 0x0);
  assert(el.val() == 0xa0cb);

  el &= 0xf000;
  assert(mo.val() == 0xa0000000);
  assert(io.val() == 0x0);
  assert(el.val() == 0xa000);
}