Add a get_bitfield function for byte arrays.

2 files changed, 49 insertions, 26 deletions

diff --git a/tests/8byte_tests.c b/tests/8byte_tests.c
index 5ebb0db..12ff417 100644
--- a/tests/8byte_tests.c
+++ b/tests/8byte_tests.c
@@ -12,7 +12,7 @@ END_TEST
 START_TEST (test_one_bit_not_swapped)
 {
     uint64_t data = 0x80;
-    uint64_t result = eightbyte_get_bit_field(data, 0, 1, false);
+    uint64_t result = eightbyte_get_bitfield(data, 0, 1, false);
     fail_if(result == 1);
 }
 END_TEST
@@ -20,7 +20,7 @@ END_TEST
 START_TEST (test_one_bit)
 {
     uint64_t data = 0x8000000000000000;
-    uint64_t result = eightbyte_get_bit_field(data, 0, 1, false);
+    uint64_t result = eightbyte_get_bitfield(data, 0, 1, false);
     fail_unless(result == 0x1,
             "First bit in 0x%llx was 0x%llx instead of 0x1", data, result);
 }
@@ -29,7 +29,7 @@ END_TEST
 START_TEST (test_32_bit_parse)
 {
     uint64_t data = 0x0402574d555a0401;
-    uint64_t result = eightbyte_get_bit_field(data, 16, 32, false);
+    uint64_t result = eightbyte_get_bitfield(data, 16, 32, false);
     uint64_t expectedValue = 0x574d555a;
     fail_unless(result == expectedValue,
             "Field retrieved in 0x%llx was 0x%llx instead of 0x%llx", data,
@@ -40,7 +40,7 @@ END_TEST
 START_TEST (test_16_bit_parse)
 {
     uint64_t data = 0xF34DFCFF00000000;
-    uint64_t result = eightbyte_get_bit_field(data, 16, 16, false);
+    uint64_t result = eightbyte_get_bitfield(data, 16, 16, false);
     uint64_t expectedValue = 0xFCFF;
     fail_unless(result == expectedValue,
             "Field retrieved in 0x%llx was 0x%llx instead of 0x%llx", data,
@@ -51,13 +51,13 @@ END_TEST
 START_TEST (test_one_byte)
 {
     uint64_t data = 0xFA00000000000000;
-    uint64_t result = eightbyte_get_bit_field(data, 0, 4, false);
+    uint64_t result = eightbyte_get_bitfield(data, 0, 4, false);
     fail_unless(result == 0xF,
             "First nibble in 0x%llx was 0x%llx instead of 0xF", data, result);
-    result = eightbyte_get_bit_field(data, 4, 4, false);
+    result = eightbyte_get_bitfield(data, 4, 4, false);
     fail_unless(result == 0xA,
             "Second nibble in 0x%llx was 0x%llx instead of 0xA", data, result);
-    result = eightbyte_get_bit_field(data, 0, 8, false);
+    result = eightbyte_get_bitfield(data, 0, 8, false);
     fail_unless(result == 0xFA,
             "All bits in 0x%llx were 0x%llx instead of 0x%llx", data, result, data);
 }
@@ -66,19 +66,19 @@ END_TEST
 START_TEST (test_multi_byte)
 {
     uint64_t data = 0x12FA000000000000;
-    uint64_t result = eightbyte_get_bit_field(data, 0, 4, false);
+    uint64_t result = eightbyte_get_bitfield(data, 0, 4, false);
     fail_unless(result == 0x1,
             "First 4 bits in 0x%llx was 0x%llx instead of 0xF", (data >> 60) & 0xF,
             result);
-    result = eightbyte_get_bit_field(data, 4, 4, false);
+    result = eightbyte_get_bitfield(data, 4, 4, false);
     fail_unless(result == 0x2,
             "Second 4 bits in 0x%llx was 0x%llx instead of 0xA", (data >> 56) & 0xF,
             result);
-    result = eightbyte_get_bit_field(data, 8, 4, false);
+    result = eightbyte_get_bitfield(data, 8, 4, false);
     fail_unless(result == 0xF,
             "First 4 bits in 0x%llx was 0x%llx instead of 0x1", (data >> 52) & 0xF,
             result);
-    result = eightbyte_get_bit_field(data, 12, 4, false);
+    result = eightbyte_get_bitfield(data, 12, 4, false);
     fail_unless(result == 0xA,
             "Second 4 bits in 0x%llx was 0x%llx instead of 0x2", (data >> 48) % 0xF,
             result);
@@ -88,7 +88,7 @@ END_TEST
 START_TEST (test_get_multi_byte)
 {
     uint64_t data = 0x12FA000000000000;
-    uint64_t result = eightbyte_get_bit_field(data, 0, 9, false);
+    uint64_t result = eightbyte_get_bitfield(data, 0, 9, false);
     ck_assert_int_eq(result, 0x25);
 }
 END_TEST
@@ -96,7 +96,7 @@ END_TEST
 START_TEST (test_get_off_byte_boundary)
 {
     uint64_t data = 0x000012FA00000000;
-    uint64_t result = eightbyte_get_bit_field(data, 12, 8, false);
+    uint64_t result = eightbyte_get_bitfield(data, 12, 8, false);
     ck_assert_int_eq(result, 0x01);
 } END_TEST
 
@@ -111,16 +111,16 @@ START_TEST (test_set_field)
 {
     uint64_t data = 0;
     fail_unless(set_bit_field(&data, 1, 0, 1));
-    uint64_t result = eightbyte_get_bit_field(data, 0, 1, false);
+    uint64_t result = eightbyte_get_bitfield(data, 0, 1, false);
     ck_assert_int_eq(result, 0x1);
     data = 0;
     fail_unless(set_bit_field(&data, 1, 1, 1));
-    result = eightbyte_get_bit_field(data, 1, 1, false);
+    result = eightbyte_get_bitfield(data, 1, 1, false);
     ck_assert_int_eq(result, 0x1);
 
     data = 0;
     fail_unless(set_bit_field(&data, 0xf, 3, 4));
-    result = eightbyte_get_bit_field(data, 3, 4, false);
+    result = eightbyte_get_bitfield(data, 3, 4, false);
     ck_assert_int_eq(result, 0xf);
 }
 END_TEST
@@ -129,7 +129,7 @@ START_TEST (test_set_doesnt_clobber_existing_data)
 {
     uint64_t data = 0xFFFC4DF300000000;
     fail_unless(set_bit_field(&data, 0x4fc8, 16, 16));
-    uint64_t result = eightbyte_get_bit_field(data, 16, 16, false);
+    uint64_t result = eightbyte_get_bitfield(data, 16, 16, false);
     fail_unless(result == 0x4fc8,
             "Field retrieved in 0x%llx was 0x%llx instead of 0x%x", data, result,
             0xc84f);
@@ -146,7 +146,7 @@ START_TEST (test_set_off_byte_boundary)
 {
     uint64_t data = 0xFFFC4DF300000000;
     fail_unless(set_bit_field(&data, 0x12, 12, 8));
-    uint64_t result = eightbyte_get_bit_field(data, 12, 12, false);
+    uint64_t result = eightbyte_get_bitfield(data, 12, 12, false);
     ck_assert_int_eq(result,0x12d);
 }
 END_TEST
@@ -155,14 +155,14 @@ START_TEST (test_set_odd_number_of_bits)
 {
     uint64_t data = 0xFFFC4DF300000000LLU;
     fail_unless(set_bit_field(&data, 0x12, 11, 5));
-    uint64_t result = eightbyte_get_bit_field(data, 11, 5, false);
+    uint64_t result = eightbyte_get_bitfield(data, 11, 5, false);
     fail_unless(result == 0x12,
             "Field set in 0x%llx%llx%llx%llx was 0x%llx instead of 0x%llx", data, result,
             0x12);
 
     data = 0xFFFC4DF300000000LLU;
     fail_unless(set_bit_field(&data, 0x2, 11, 5));
-    result = eightbyte_get_bit_field(data, 11, 5, false);
+    result = eightbyte_get_bitfield(data, 11, 5, false);
     fail_unless(result == 0x2,
             "Field set in 0x%llx%llx%llx%llx was 0x%llx instead of 0x%llx", data, result,
             0x2);
diff --git a/tests/read_tests.c b/tests/read_tests.c
index 1cde461..512d87e 100644
--- a/tests/read_tests.c
+++ b/tests/read_tests.c
@@ -3,8 +3,9 @@
 #include <canutil/read.h>
 
 const uint64_t BIG_ENDIAN_TEST_DATA = __builtin_bswap64(0xEB00000000000000);
+const uint8_t ARRAY_TEST_DATA[] = {0xEB, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0};
 
-START_TEST (test_parse_float)
+START_TEST (test_eightbyte_parse_float)
 {
     float result = eightbyte_parse_float(BIG_ENDIAN_TEST_DATA, 2, 4, 1001.0,
             -30000.0);
@@ -14,10 +15,30 @@ START_TEST (test_parse_float)
 }
 END_TEST
 
-START_TEST (test_parse_bool)
+START_TEST (test_eightbyte_parse_bool)
 {
-    float result = eightbyte_parse_bool(BIG_ENDIAN_TEST_DATA, 0, 1, 1.0, 0);
-    float correctResult = true;
+    bool result = eightbyte_parse_bool(BIG_ENDIAN_TEST_DATA, 0, 1, 1.0, 0);
+    bool correctResult = true;
+    fail_unless(result == correctResult,
+            "parse is incorrect: %d but should be %d", result, correctResult);
+}
+END_TEST
+
+START_TEST (test_bitfield_parse_float)
+{
+    float result = bitfield_parse_float(ARRAY_TEST_DATA,
+            sizeof(ARRAY_TEST_DATA), 2, 4, 1001.0, -30000.0);
+    float correctResult = 0xA * 1001.0 - 30000.0;
+    fail_unless(result == correctResult,
+            "parse is incorrect: %f but should be %f", result, correctResult);
+}
+END_TEST
+
+START_TEST (test_bitfield_parse_bool)
+{
+    bool result = bitfield_parse_bool(ARRAY_TEST_DATA, sizeof(ARRAY_TEST_DATA),
+            0, 1, 1.0, 0);
+    bool correctResult = true;
     fail_unless(result == correctResult,
             "parse is incorrect: %d but should be %d", result, correctResult);
 }
@@ -27,8 +48,10 @@ Suite* canreadSuite(void) {
     Suite* s = suite_create("read");
     TCase *tc_core = tcase_create("core");
     tcase_add_checked_fixture(tc_core, NULL, NULL);
-    tcase_add_test(tc_core, test_parse_float);
-    tcase_add_test(tc_core, test_parse_bool);
+    tcase_add_test(tc_core, test_eightbyte_parse_float);
+    tcase_add_test(tc_core, test_eightbyte_parse_bool);
+    tcase_add_test(tc_core, test_bitfield_parse_float);
+    tcase_add_test(tc_core, test_bitfield_parse_bool);
     suite_add_tcase(s, tc_core);
 
     return s;