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Diffstat (limited to 'tests/int.c')
| -rw-r--r-- | tests/int.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/tests/int.c b/tests/int.c deleted file mode 100644 index e59efde..0000000 --- a/tests/int.c +++ /dev/null @@ -1,121 +0,0 @@ -// Copyright © Tavian Barnes <tavianator@tavianator.com> -// SPDX-License-Identifier: 0BSD - -#undef NDEBUG - -#include "../src/int.h" -#include "../src/diag.h" -#include <assert.h> -#include <limits.h> -#include <stdint.h> -#include <stdlib.h> - -bfs_static_assert(UMAX_WIDTH(0x1) == 1); -bfs_static_assert(UMAX_WIDTH(0x3) == 2); -bfs_static_assert(UMAX_WIDTH(0x7) == 3); -bfs_static_assert(UMAX_WIDTH(0xF) == 4); -bfs_static_assert(UMAX_WIDTH(0xFF) == 8); -bfs_static_assert(UMAX_WIDTH(0xFFF) == 12); -bfs_static_assert(UMAX_WIDTH(0xFFFF) == 16); - -#define UWIDTH_MAX(n) (2 * ((UINTMAX_C(1) << ((n) - 1)) - 1) + 1) -#define IWIDTH_MAX(n) UWIDTH_MAX((n) - 1) -#define IWIDTH_MIN(n) (-(intmax_t)IWIDTH_MAX(n) - 1) - -bfs_static_assert(UCHAR_MAX == UWIDTH_MAX(UCHAR_WIDTH)); -bfs_static_assert(SCHAR_MIN == IWIDTH_MIN(SCHAR_WIDTH)); -bfs_static_assert(SCHAR_MAX == IWIDTH_MAX(SCHAR_WIDTH)); - -bfs_static_assert(USHRT_MAX == UWIDTH_MAX(USHRT_WIDTH)); -bfs_static_assert(SHRT_MIN == IWIDTH_MIN(SHRT_WIDTH)); -bfs_static_assert(SHRT_MAX == IWIDTH_MAX(SHRT_WIDTH)); - -bfs_static_assert(UINT_MAX == UWIDTH_MAX(UINT_WIDTH)); -bfs_static_assert(INT_MIN == IWIDTH_MIN(INT_WIDTH)); -bfs_static_assert(INT_MAX == IWIDTH_MAX(INT_WIDTH)); - -bfs_static_assert(ULONG_MAX == UWIDTH_MAX(ULONG_WIDTH)); -bfs_static_assert(LONG_MIN == IWIDTH_MIN(LONG_WIDTH)); -bfs_static_assert(LONG_MAX == IWIDTH_MAX(LONG_WIDTH)); - -bfs_static_assert(ULLONG_MAX == UWIDTH_MAX(ULLONG_WIDTH)); -bfs_static_assert(LLONG_MIN == IWIDTH_MIN(LLONG_WIDTH)); -bfs_static_assert(LLONG_MAX == IWIDTH_MAX(LLONG_WIDTH)); - -bfs_static_assert(SIZE_MAX == UWIDTH_MAX(SIZE_WIDTH)); -bfs_static_assert(PTRDIFF_MIN == IWIDTH_MIN(PTRDIFF_WIDTH)); -bfs_static_assert(PTRDIFF_MAX == IWIDTH_MAX(PTRDIFF_WIDTH)); - -bfs_static_assert(UINTPTR_MAX == UWIDTH_MAX(UINTPTR_WIDTH)); -bfs_static_assert(INTPTR_MIN == IWIDTH_MIN(INTPTR_WIDTH)); -bfs_static_assert(INTPTR_MAX == IWIDTH_MAX(INTPTR_WIDTH)); - -bfs_static_assert(UINTMAX_MAX == UWIDTH_MAX(UINTMAX_WIDTH)); -bfs_static_assert(INTMAX_MIN == IWIDTH_MIN(INTMAX_WIDTH)); -bfs_static_assert(INTMAX_MAX == IWIDTH_MAX(INTMAX_WIDTH)); - -int main(void) { - assert(bswap((uint8_t)0x12) == 0x12); - assert(bswap((uint16_t)0x1234) == 0x3412); - assert(bswap((uint32_t)0x12345678) == 0x78563412); - assert(bswap((uint64_t)0x1234567812345678) == 0x7856341278563412); - - assert(count_ones(0x0) == 0); - assert(count_ones(0x1) == 1); - assert(count_ones(0x2) == 1); - assert(count_ones(0x3) == 2); - assert(count_ones(0x137F) == 10); - - assert(count_zeros(0) == INT_WIDTH); - assert(count_zeros(0L) == LONG_WIDTH); - assert(count_zeros(0LL) == LLONG_WIDTH); - assert(count_zeros((uint8_t)0) == 8); - assert(count_zeros((uint16_t)0) == 16); - assert(count_zeros((uint32_t)0) == 32); - assert(count_zeros((uint64_t)0) == 64); - - assert(rotate_left((uint8_t)0xA1, 4) == 0x1A); - assert(rotate_left((uint16_t)0x1234, 12) == 0x4123); - assert(rotate_left((uint32_t)0x12345678, 20) == 0x67812345); - assert(rotate_left((uint32_t)0x12345678, 0) == 0x12345678); - - assert(rotate_right((uint8_t)0xA1, 4) == 0x1A); - assert(rotate_right((uint16_t)0x1234, 12) == 0x2341); - assert(rotate_right((uint32_t)0x12345678, 20) == 0x45678123); - assert(rotate_right((uint32_t)0x12345678, 0) == 0x12345678); - - for (int i = 0; i < 16; ++i) { - uint16_t n = (uint16_t)1 << i; - for (int j = i; j < 16; ++j) { - uint16_t m = (uint16_t)1 << j; - uint16_t nm = n | m; - assert(count_ones(nm) == 1 + (n != m)); - assert(count_zeros(nm) == 15 - (n != m)); - assert(leading_zeros(nm) == 15 - j); - assert(trailing_zeros(nm) == i); - assert(first_leading_one(nm) == j + 1); - assert(first_trailing_one(nm) == i + 1); - assert(bit_width(nm) == j + 1); - assert(bit_floor(nm) == m); - if (n == m) { - assert(bit_ceil(nm) == m); - assert(has_single_bit(nm)); - } else { - if (j < 15) { - assert(bit_ceil(nm) == (m << 1)); - } - assert(!has_single_bit(nm)); - } - } - } - - assert(leading_zeros((uint16_t)0) == 16); - assert(trailing_zeros((uint16_t)0) == 16); - assert(first_leading_one(0) == 0); - assert(first_trailing_one(0) == 0); - assert(bit_width(0) == 0); - assert(bit_floor(0) == 0); - assert(bit_ceil(0) == 1); - - return EXIT_SUCCESS; -} |