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authorRaymond Lu <songyulu@hdfgroup.org>2004-04-13 18:37:14 (GMT)
committerRaymond Lu <songyulu@hdfgroup.org>2004-04-13 18:37:14 (GMT)
commit5fb4b1a71e3d5ed7e006a81eb7868db3f7fec2a7 (patch)
tree5463d9a5edd1b422799ab099fb706cfb0f566a53 /test
parent6e9faf2337fa950615dc7a414bc8311fe3525220 (diff)
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[svn-r8349] *** empty log message ***
Diffstat (limited to 'test')
-rw-r--r--test/bittests.c396
1 files changed, 396 insertions, 0 deletions
diff --git a/test/bittests.c b/test/bittests.c
index a59ea02..2823a56 100644
--- a/test/bittests.c
+++ b/test/bittests.c
@@ -270,6 +270,398 @@ test_copy (void)
/*-------------------------------------------------------------------------
+ * Function: test_shift
+ *
+ * Purpose: Test bit shifting operations.
+ *
+ * Return: Success: 0
+ *
+ * Failure: -1
+ *
+ * Programmer: Raymond Lu
+ * Monday, April 12, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_shift (void)
+{
+ uint8_t vector[8];
+ size_t offset, size;
+ int i, j;
+ ssize_t shift_dist, n;
+
+ TESTING("bit shift operations");
+
+ for (i=0; i<NTESTS; i++) {
+ offset = rand() % (8*sizeof vector);
+ size = (unsigned)rand() % (8*sizeof(vector)-offset);
+ /* Don't want size to be 0 */
+ if(size == 0) continue;
+ shift_dist = rand() % size;
+
+ /*-------- LEFT-shift some bits and make sure something was shifted --------*/
+ memset (vector, 0x00, sizeof vector);
+ H5T_bit_set (vector, offset, size, 1);
+
+ H5T_bit_shift (vector, shift_dist, offset, size);
+
+ /* Look for the ones */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_LSB, 1);
+ if (n!=offset+shift_dist) {
+ H5_FAILED();
+ printf (" Unable to find first bit in destination "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*
+ * Look for zeros and ones in reverse order. This is only to test
+ * that reverse searches work as expected.
+ */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_MSB, 1);
+ if (n!=(ssize_t)(offset+size-1)) {
+ H5_FAILED();
+ printf (" Unable to find last bit in destination "
+ "(reverse, n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*-------- RIGHT-shift some bits and make sure something was shifted --------*/
+ memset (vector, 0x00, sizeof vector);
+ H5T_bit_set (vector, offset, size, 1);
+
+ H5T_bit_shift (vector, -shift_dist, offset, size);
+
+ /* Look for the ones */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_LSB, 1);
+ if (n!=offset) {
+ H5_FAILED();
+ printf (" Unable to find first bit in destination "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*
+ * Look for zeros and ones in reverse order. This is only to test
+ * that reverse searches work as expected.
+ */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_MSB, 1);
+ if (n!=(ssize_t)(offset+size-shift_dist-1)) {
+ H5_FAILED();
+ printf (" Unable to find last bit in destination "
+ "(reverse, n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*-------- Shift the bits out of sight --------*/
+ /* A sequence 111111 will be 000000 if shift_dist=6 */
+
+ /* Randomly decide shift direction */
+ if(size % 2 == 0)
+ shift_dist = size;
+ else
+ shift_dist = -size;
+
+ memset (vector, 0x00, sizeof vector);
+ H5T_bit_set (vector, offset, size, 1);
+
+ H5T_bit_shift (vector, shift_dist, offset, size);
+
+ /* Supposed to fail to find any ones */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_LSB, 1);
+ if (n >= 0) {
+ H5_FAILED();
+ printf (" Unable to verify all bits are zero in destination(LSB) "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /* Look from the other direction */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_MSB, 1);
+ if (n >= 0) {
+ H5_FAILED();
+ printf (" Unable to verify all bits are zero in destination(MSB) "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+ }
+
+ PASSED();
+ return 0;
+
+ failed:
+ printf (" i=%d, offset=%lu, size=%lu, shift_dist=%lu\n",
+ i, (unsigned long)offset, (unsigned long)size,
+ (unsigned long)shift_dist);
+ for (j=sizeof(vector)-1; j>=0; --j) printf ("%02x", vector[j]);
+ printf ("\n");
+ return -1;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: test_increment
+ *
+ * Purpose: Test operation to increment bit vector by 1.
+ *
+ * Return: Success: 0
+ *
+ * Failure: -1
+ *
+ * Programmer: Raymond Lu
+ * Monday, April 12, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_increment (void)
+{
+ uint8_t vector[8];
+ size_t offset, size;
+ int i, j;
+ ssize_t n;
+
+ TESTING("bit increment operations");
+
+ for (i=0; i<NTESTS; i++) {
+ offset = rand() % (8*sizeof vector);
+ size = (unsigned)rand() % (8*sizeof(vector)-offset);
+ /* Don't want size to be 0 */
+ if(size == 0) continue;
+
+ memset (vector, 0x00, sizeof vector);
+ if(size>1) /* if size=6, make a sequence like 011111 */
+ H5T_bit_set (vector, offset, size-1, 1);
+ else /* if size=1, just set this one bit to 1 */
+ H5T_bit_set (vector, offset, size, 1);
+
+ /* Increment the sequence by one */
+ H5T_bit_inc (vector, offset, size);
+
+ /* Look for the one */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_LSB, 1);
+ if (size!=1 && n!=offset+size-1) {
+ H5_FAILED();
+ printf (" Unable to find first bit in destination "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+ if(size==1 && n>=0) {
+ H5_FAILED();
+ printf (" Unable to verify all-zero bit in destination "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*
+ * Look for one in reverse order. This is only to test
+ * that reverse searches work as expected.
+ */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_MSB, 1);
+ if (size!=1 && n!=(ssize_t)(offset+size-1)) {
+ H5_FAILED();
+ printf (" Unable to find last bit in destination "
+ "(reverse, n=%d)\n", (int)n);
+ goto failed;
+ }
+ if(size==1 && n>=0) {
+ H5_FAILED();
+ printf (" Unable to verify all-zero bit in destination "
+ "(reverse, n=%d)\n", (int)n);
+ goto failed;
+ }
+ }
+
+ PASSED();
+ return 0;
+
+ failed:
+ printf (" i=%d, offset=%lu, size=%lu\n",
+ i, (unsigned long)offset, (unsigned long)size);
+ for (j=sizeof(vector)-1; j>=0; --j) printf ("%02x", vector[j]);
+ printf ("\n");
+ return -1;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: test_decrement
+ *
+ * Purpose: Test operation to decrement bit vector by 1.
+ *
+ * Return: Success: 0
+ *
+ * Failure: -1
+ *
+ * Programmer: Raymond Lu
+ * Monday, April 12, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_decrement (void)
+{
+ uint8_t vector[8];
+ size_t offset, size;
+ int i, j;
+ ssize_t n;
+
+ TESTING("bit decrement operations");
+
+ for (i=0; i<NTESTS; i++) {
+ offset = rand() % (8*sizeof vector);
+ size = (unsigned)rand() % (8*sizeof(vector)-offset);
+ /* Don't want size to be 0 */
+ if(size == 0) continue;
+
+ /* All-zero sequence will become 111111(size=6) after decrement */
+ memset (vector, 0x00, sizeof vector);
+
+ /* decrement the sequence by one */
+ H5T_bit_dec (vector, offset, size);
+
+ /* Look for the ones */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_LSB, 1);
+ if (n!=offset) {
+ H5_FAILED();
+ printf (" Unable to find first bit in destination "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*
+ * Look for zeros and ones in reverse order. This is only to test
+ * that reverse searches work as expected.
+ */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_MSB, 1);
+ if (n!=(ssize_t)(offset+size-1)) {
+ H5_FAILED();
+ printf (" Unable to find last bit in destination "
+ "(reverse, n=%d)\n", (int)n);
+ goto failed;
+ }
+ }
+
+ PASSED();
+ return 0;
+
+ failed:
+ printf (" i=%d, offset=%lu, size=%lu\n",
+ i, (unsigned long)offset, (unsigned long)size);
+ for (j=sizeof(vector)-1; j>=0; --j) printf ("%02x", vector[j]);
+ printf ("\n");
+ return -1;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: test_negate
+ *
+ * Purpose: Test operation to negate bit vector.
+ *
+ * Return: Success: 0
+ *
+ * Failure: -1
+ *
+ * Programmer: Raymond Lu
+ * Monday, April 12, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_negate (void)
+{
+ uint8_t vector[8];
+ size_t offset, size;
+ int i, j;
+ ssize_t n;
+
+ TESTING("bit negate operations");
+
+ for (i=0; i<NTESTS; i++) {
+ offset = rand() % (8*sizeof vector);
+ size = (unsigned)rand() % (8*sizeof(vector)-offset);
+ /* Don't want size to be 0 */
+ if(size == 0) continue;
+
+ /* All-zero sequence will become 111111(size=6) after negating */
+ memset (vector, 0x00, sizeof vector);
+
+ /* negate the sequence */
+ H5T_bit_neg (vector, offset, size);
+
+ /* Look for the ones */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_LSB, 1);
+ if (n!=offset) {
+ H5_FAILED();
+ printf (" Unable to find first bit in destination "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*
+ * Look for zeros and ones in reverse order. This is only to test
+ * that reverse searches work as expected.
+ */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_MSB, 1);
+ if (n!=(ssize_t)(offset+size-1)) {
+ H5_FAILED();
+ printf (" Unable to find last bit in destination "
+ "(reverse, n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /* All-one sequence will become 000000(size=6) after negating */
+ memset (vector, 0x00, sizeof vector);
+ H5T_bit_set (vector, offset, size, 1);
+
+ /* negate the sequence */
+ H5T_bit_neg (vector, offset, size);
+
+ /* Look for the ones */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_LSB, 1);
+ if (n>=0) {
+ H5_FAILED();
+ printf (" Unable to verify all-zero bits in destination "
+ "(n=%d)\n", (int)n);
+ goto failed;
+ }
+
+ /*
+ * Look for ones in reverse order. This is only to test
+ * that reverse searches work as expected.
+ */
+ n = H5T_bit_find (vector, 0, 8*sizeof(vector), H5T_BIT_MSB, 1);
+ if (n>=0) {
+ H5_FAILED();
+ printf (" Unable to verify all-zero bits in destination "
+ "(reverse, n=%d)\n", (int)n);
+ goto failed;
+ }
+ }
+
+ PASSED();
+ return 0;
+
+ failed:
+ printf (" i=%d, offset=%lu, size=%lu\n",
+ i, (unsigned long)offset, (unsigned long)size);
+ for (j=sizeof(vector)-1; j>=0; --j) printf ("%02x", vector[j]);
+ printf ("\n");
+ return -1;
+}
+
+
+/*-------------------------------------------------------------------------
* Function: test_set
*
* Purpose: Test bit set operations
@@ -536,6 +928,10 @@ main (void)
nerrors += test_set ()<0?1:0;
nerrors += test_clear()<0?1:0;
nerrors += test_copy ()<0?1:0;
+ nerrors += test_shift()<0?1:0;
+ nerrors += test_increment ()<0?1:0;
+ nerrors += test_decrement ()<0?1:0;
+ nerrors += test_negate ()<0?1:0;
if (nerrors) {
printf("***** %u FAILURE%s! *****\n",