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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

TESTS/mbedmicro-mbed/div/main.cpp@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 #include <utility> // std::pair
group-onsemi 0:098463de4c5d 2 #include "mbed.h"
group-onsemi 0:098463de4c5d 3 #include "greentea-client/test_env.h"
group-onsemi 0:098463de4c5d 4
group-onsemi 0:098463de4c5d 5 uint32_t test_64(uint64_t ticks) {
group-onsemi 0:098463de4c5d 6 ticks >>= 3; // divide by 8
group-onsemi 0:098463de4c5d 7 if (ticks > 0xFFFFFFFF) {
group-onsemi 0:098463de4c5d 8 ticks /= 3;
group-onsemi 0:098463de4c5d 9 } else {
group-onsemi 0:098463de4c5d 10 ticks = (ticks * 0x55555556) >> 32; // divide by 3
group-onsemi 0:098463de4c5d 11 }
group-onsemi 0:098463de4c5d 12 return (uint32_t)(0xFFFFFFFF & ticks);
group-onsemi 0:098463de4c5d 13 }
group-onsemi 0:098463de4c5d 14
group-onsemi 0:098463de4c5d 15 const char *result_str(bool result) {
group-onsemi 0:098463de4c5d 16 return result ? "[OK]" : "[FAIL]";
group-onsemi 0:098463de4c5d 17 }
group-onsemi 0:098463de4c5d 18
group-onsemi 0:098463de4c5d 19 int main() {
group-onsemi 0:098463de4c5d 20 GREENTEA_SETUP(5, "default_auto");
group-onsemi 0:098463de4c5d 21
group-onsemi 0:098463de4c5d 22 bool result = true;
group-onsemi 0:098463de4c5d 23
group-onsemi 0:098463de4c5d 24 { // 0xFFFFFFFF * 8 = 0x7fffffff8
group-onsemi 0:098463de4c5d 25 std::pair<uint32_t, uint64_t> values = std::make_pair(0x55555555, 0x7FFFFFFF8);
group-onsemi 0:098463de4c5d 26 uint32_t test_ret = test_64(values.second);
group-onsemi 0:098463de4c5d 27 bool test_res = values.first == test_ret;
group-onsemi 0:098463de4c5d 28 result = result && test_res;
group-onsemi 0:098463de4c5d 29 printf("64bit: 0x7FFFFFFF8: expected 0x%lX got 0x%lX ... %s\r\n", values.first, test_ret, result_str(test_res));
group-onsemi 0:098463de4c5d 30 }
group-onsemi 0:098463de4c5d 31
group-onsemi 0:098463de4c5d 32 { // 0xFFFFFFFF * 24 = 0x17ffffffe8
group-onsemi 0:098463de4c5d 33 std::pair<uint32_t, uint64_t> values = std::make_pair(0xFFFFFFFF, 0x17FFFFFFE8);
group-onsemi 0:098463de4c5d 34 uint32_t test_ret = test_64(values.second);
group-onsemi 0:098463de4c5d 35 bool test_res = values.first == test_ret;
group-onsemi 0:098463de4c5d 36 result = result && test_res;
group-onsemi 0:098463de4c5d 37 printf("64bit: 0x17FFFFFFE8: expected 0x%lX got 0x%lX ... %s\r\n", values.first, test_ret, result_str(test_res));
group-onsemi 0:098463de4c5d 38 }
group-onsemi 0:098463de4c5d 39
group-onsemi 0:098463de4c5d 40 GREENTEA_TESTSUITE_RESULT(result);
group-onsemi 0:098463de4c5d 41 }