| /* |
| * Copyright 2024 The Hafnium Authors. |
| * |
| * Use of this source code is governed by a BSD-style |
| * license that can be found in the LICENSE file or at |
| * https://opensource.org/licenses/BSD-3-Clause. |
| */ |
| |
| #include "gtest/gtest.h" |
| |
| extern "C" { |
| #include "hf/bits.h" |
| } |
| |
| TEST(bits, is_bit_set) |
| { |
| ASSERT_EQ(IS_BIT_SET(UINT64_C(1) << 63, 63), true); |
| ASSERT_EQ(IS_BIT_SET(0, 63), false); |
| } |
| |
| TEST(bits, is_bit_unset) |
| { |
| ASSERT_EQ(IS_BIT_UNSET(UINT64_C(1) << 63, 63), false); |
| ASSERT_EQ(IS_BIT_UNSET(0, 63), true); |
| } |
| |
| TEST(bits, get_bits_mask) |
| { |
| ASSERT_EQ(GET_BITS_MASK(0, 0), 0b0001); |
| ASSERT_EQ(GET_BITS_MASK(1, 0), 0b0011); |
| ASSERT_EQ(GET_BITS_MASK(2, 0), 0b0111); |
| ASSERT_EQ(GET_BITS_MASK(7, 0), 0b1111'1111); |
| ASSERT_EQ(GET_BITS_MASK(7, 1), 0b1111'1110); |
| |
| ASSERT_EQ(GET_BITS_MASK(63, 0), UINT64_MAX); |
| ASSERT_EQ(GET_BITS_MASK(63, 1), UINT64_MAX - 1); |
| } |
| |
| TEST(bits, get_bits) |
| { |
| ASSERT_EQ(GET_BITS(0xAF, 3, 0), 0x0F); |
| ASSERT_EQ(GET_BITS(0xAF, 7, 4), 0xA0); |
| ASSERT_EQ(GET_BITS(0x10, 7, 4), 0x10); |
| ASSERT_EQ(GET_BITS(0x0F, 7, 4), 0x00); |
| } |
| |
| TEST(bits, any_bits_set) |
| { |
| ASSERT_EQ(ANY_BITS_SET(0x01, 3, 0), true); |
| ASSERT_EQ(ANY_BITS_SET(0x00, 3, 0), false); |
| ASSERT_EQ(ANY_BITS_SET(0x10, 7, 4), true); |
| ASSERT_EQ(ANY_BITS_SET(0x0F, 7, 4), false); |
| } |
| |
| TEST(bits, all_bits_set) |
| { |
| ASSERT_EQ(ALL_BITS_SET(0b1111, 3, 0), true); |
| ASSERT_EQ(ALL_BITS_SET(0b0111, 3, 0), false); |
| ASSERT_EQ(ALL_BITS_SET(0xF0, 7, 4), true); |
| ASSERT_EQ(ALL_BITS_SET(0xA0, 7, 4), false); |
| } |
| |
| TEST(bits, any_bits_unset) |
| { |
| ASSERT_EQ(ANY_BITS_UNSET(0x00, 3, 0), true); |
| ASSERT_EQ(ANY_BITS_UNSET(0x01, 3, 0), true); |
| ASSERT_EQ(ANY_BITS_UNSET(0x0F, 3, 0), false); |
| ASSERT_EQ(ANY_BITS_UNSET(0xF0, 7, 4), false); |
| ASSERT_EQ(ANY_BITS_UNSET(0xA0, 7, 4), true); |
| } |
| |
| TEST(bits, all_bits_unset) |
| { |
| ASSERT_EQ(ALL_BITS_UNSET(0x01, 3, 0), false); |
| ASSERT_EQ(ALL_BITS_UNSET(0x00, 3, 0), true); |
| ASSERT_EQ(ALL_BITS_UNSET(0x10, 7, 4), false); |
| ASSERT_EQ(ALL_BITS_UNSET(0x0F, 7, 4), true); |
| } |