diff options
Diffstat (limited to 'tests/bit.c')
| -rw-r--r-- | tests/bit.c | 112 |
1 files changed, 54 insertions, 58 deletions
diff --git a/tests/bit.c b/tests/bit.c index 49e167d..64fb5ea 100644 --- a/tests/bit.c +++ b/tests/bit.c @@ -56,86 +56,82 @@ bfs_static_assert(INTMAX_MAX == IWIDTH_MAX(INTMAX_WIDTH)); #define check_eq(a, b) \ bfs_check((a) == (b), "(0x%jX) %s != %s (0x%jX)", (uintmax_t)(a), #a, #b, (uintmax_t)(b)) -bool check_bit(void) { - bool ret = true; - +void check_bit(void) { const char *str = "\x1\x2\x3\x4"; uint32_t word; memcpy(&word, str, sizeof(word)); #if ENDIAN_NATIVE == ENDIAN_LITTLE - ret &= check_eq(word, 0x04030201); + check_eq(word, 0x04030201); #elif ENDIAN_NATIVE == ENDIAN_BIG - ret &= check_eq(word, 0x01020304); + check_eq(word, 0x01020304); #else # warning "Skipping byte order tests on mixed/unknown-endian machine" #endif - ret &= check_eq(bswap((uint8_t)0x12), 0x12); - ret &= check_eq(bswap((uint16_t)0x1234), 0x3412); - ret &= check_eq(bswap((uint32_t)0x12345678), 0x78563412); - ret &= check_eq(bswap((uint64_t)0x1234567812345678), 0x7856341278563412); - - ret &= check_eq(count_ones(0x0U), 0); - ret &= check_eq(count_ones(0x1U), 1); - ret &= check_eq(count_ones(0x2U), 1); - ret &= check_eq(count_ones(0x3U), 2); - ret &= check_eq(count_ones(0x137FU), 10); - - ret &= check_eq(count_zeros(0U), UINT_WIDTH); - ret &= check_eq(count_zeros(0UL), ULONG_WIDTH); - ret &= check_eq(count_zeros(0ULL), ULLONG_WIDTH); - ret &= check_eq(count_zeros((uint8_t)0), 8); - ret &= check_eq(count_zeros((uint16_t)0), 16); - ret &= check_eq(count_zeros((uint32_t)0), 32); - ret &= check_eq(count_zeros((uint64_t)0), 64); - - ret &= check_eq(rotate_left((uint8_t)0xA1, 4), 0x1A); - ret &= check_eq(rotate_left((uint16_t)0x1234, 12), 0x4123); - ret &= check_eq(rotate_left((uint32_t)0x12345678, 20), 0x67812345); - ret &= check_eq(rotate_left((uint32_t)0x12345678, 0), 0x12345678); - - ret &= check_eq(rotate_right((uint8_t)0xA1, 4), 0x1A); - ret &= check_eq(rotate_right((uint16_t)0x1234, 12), 0x2341); - ret &= check_eq(rotate_right((uint32_t)0x12345678, 20), 0x45678123); - ret &= check_eq(rotate_right((uint32_t)0x12345678, 0), 0x12345678); + check_eq(bswap((uint8_t)0x12), 0x12); + check_eq(bswap((uint16_t)0x1234), 0x3412); + check_eq(bswap((uint32_t)0x12345678), 0x78563412); + check_eq(bswap((uint64_t)0x1234567812345678), 0x7856341278563412); + + check_eq(count_ones(0x0U), 0); + check_eq(count_ones(0x1U), 1); + check_eq(count_ones(0x2U), 1); + check_eq(count_ones(0x3U), 2); + check_eq(count_ones(0x137FU), 10); + + check_eq(count_zeros(0U), UINT_WIDTH); + check_eq(count_zeros(0UL), ULONG_WIDTH); + check_eq(count_zeros(0ULL), ULLONG_WIDTH); + check_eq(count_zeros((uint8_t)0), 8); + check_eq(count_zeros((uint16_t)0), 16); + check_eq(count_zeros((uint32_t)0), 32); + check_eq(count_zeros((uint64_t)0), 64); + + check_eq(rotate_left((uint8_t)0xA1, 4), 0x1A); + check_eq(rotate_left((uint16_t)0x1234, 12), 0x4123); + check_eq(rotate_left((uint32_t)0x12345678, 20), 0x67812345); + check_eq(rotate_left((uint32_t)0x12345678, 0), 0x12345678); + + check_eq(rotate_right((uint8_t)0xA1, 4), 0x1A); + check_eq(rotate_right((uint16_t)0x1234, 12), 0x2341); + check_eq(rotate_right((uint32_t)0x12345678, 20), 0x45678123); + check_eq(rotate_right((uint32_t)0x12345678, 0), 0x12345678); for (unsigned int i = 0; i < 16; ++i) { uint16_t n = (uint16_t)1 << i; for (unsigned int j = i; j < 16; ++j) { uint16_t m = (uint16_t)1 << j; uint16_t nm = n | m; - ret &= check_eq(count_ones(nm), 1 + (n != m)); - ret &= check_eq(count_zeros(nm), 15 - (n != m)); - ret &= check_eq(leading_zeros(nm), 15 - j); - ret &= check_eq(trailing_zeros(nm), i); - ret &= check_eq(first_leading_one(nm), 16 - j); - ret &= check_eq(first_trailing_one(nm), i + 1); - ret &= check_eq(bit_width(nm), j + 1); - ret &= check_eq(bit_floor(nm), m); + check_eq(count_ones(nm), 1 + (n != m)); + check_eq(count_zeros(nm), 15 - (n != m)); + check_eq(leading_zeros(nm), 15 - j); + check_eq(trailing_zeros(nm), i); + check_eq(first_leading_one(nm), 16 - j); + check_eq(first_trailing_one(nm), i + 1); + check_eq(bit_width(nm), j + 1); + check_eq(bit_floor(nm), m); if (n == m) { - ret &= check_eq(bit_ceil(nm), m); - ret &= bfs_check(has_single_bit(nm)); + check_eq(bit_ceil(nm), m); + bfs_check(has_single_bit(nm)); } else { if (j < 15) { - ret &= check_eq(bit_ceil(nm), (m << 1)); + check_eq(bit_ceil(nm), (m << 1)); } - ret &= bfs_check(!has_single_bit(nm)); + bfs_check(!has_single_bit(nm)); } } } - ret &= check_eq(leading_zeros((uint16_t)0), 16); - ret &= check_eq(trailing_zeros((uint16_t)0), 16); - ret &= check_eq(first_leading_one(0U), 0); - ret &= check_eq(first_trailing_one(0U), 0); - ret &= check_eq(bit_width(0U), 0); - ret &= check_eq(bit_floor(0U), 0); - ret &= check_eq(bit_ceil(0U), 1); - - ret &= bfs_check(!has_single_bit(0U)); - ret &= bfs_check(!has_single_bit(UINT32_MAX)); - ret &= bfs_check(has_single_bit((uint32_t)1 << (UINT_WIDTH - 1))); - - return ret; + check_eq(leading_zeros((uint16_t)0), 16); + check_eq(trailing_zeros((uint16_t)0), 16); + check_eq(first_leading_one(0U), 0); + check_eq(first_trailing_one(0U), 0); + check_eq(bit_width(0U), 0); + check_eq(bit_floor(0U), 0); + check_eq(bit_ceil(0U), 1); + + bfs_check(!has_single_bit(0U)); + bfs_check(!has_single_bit(UINT32_MAX)); + bfs_check(has_single_bit((uint32_t)1 << (UINT_WIDTH - 1))); } |