BA / Mbed OS BaBoRo_test2

mbed-os/TESTS/mbedmicro-mbed/div/main.cpp@0:02dd72d1d465, 2018-04-24 (annotated)

Committer:
borlanic
Date:
Tue Apr 24 11:45:18 2018 +0000
Revision:
0:02dd72d1d465
BaBoRo_test2 - backup 1

Who changed what in which revision?

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borlanic 0:02dd72d1d465 1 /* mbed Microcontroller Library
borlanic 0:02dd72d1d465 2 * Copyright (c) 2017 ARM Limited
borlanic 0:02dd72d1d465 3 *
borlanic 0:02dd72d1d465 4 * Licensed under the Apache License, Version 2.0 (the "License");
borlanic 0:02dd72d1d465 5 * you may not use this file except in compliance with the License.
borlanic 0:02dd72d1d465 6 * You may obtain a copy of the License at
borlanic 0:02dd72d1d465 7 *
borlanic 0:02dd72d1d465 8 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:02dd72d1d465 9 *
borlanic 0:02dd72d1d465 10 * Unless required by applicable law or agreed to in writing, software
borlanic 0:02dd72d1d465 11 * distributed under the License is distributed on an "AS IS" BASIS,
borlanic 0:02dd72d1d465 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:02dd72d1d465 13 * See the License for the specific language governing permissions and
borlanic 0:02dd72d1d465 14 * limitations under the License.
borlanic 0:02dd72d1d465 15 */
borlanic 0:02dd72d1d465 16 #include <utility> // std::pair
borlanic 0:02dd72d1d465 17 #include "mbed.h"
borlanic 0:02dd72d1d465 18 #include "greentea-client/test_env.h"
borlanic 0:02dd72d1d465 19
borlanic 0:02dd72d1d465 20 uint32_t test_64(uint64_t ticks) {
borlanic 0:02dd72d1d465 21 ticks >>= 3; // divide by 8
borlanic 0:02dd72d1d465 22 if (ticks > 0xFFFFFFFF) {
borlanic 0:02dd72d1d465 23 ticks /= 3;
borlanic 0:02dd72d1d465 24 } else {
borlanic 0:02dd72d1d465 25 ticks = (ticks * 0x55555556) >> 32; // divide by 3
borlanic 0:02dd72d1d465 26 }
borlanic 0:02dd72d1d465 27 return (uint32_t)(0xFFFFFFFF & ticks);
borlanic 0:02dd72d1d465 28 }
borlanic 0:02dd72d1d465 29
borlanic 0:02dd72d1d465 30 const char *result_str(bool result) {
borlanic 0:02dd72d1d465 31 return result ? "[OK]" : "[FAIL]";
borlanic 0:02dd72d1d465 32 }
borlanic 0:02dd72d1d465 33
borlanic 0:02dd72d1d465 34 int main() {
borlanic 0:02dd72d1d465 35 GREENTEA_SETUP(5, "default_auto");
borlanic 0:02dd72d1d465 36
borlanic 0:02dd72d1d465 37 bool result = true;
borlanic 0:02dd72d1d465 38
borlanic 0:02dd72d1d465 39 { // 0xFFFFFFFF * 8 = 0x7fffffff8
borlanic 0:02dd72d1d465 40 std::pair<uint32_t, uint64_t> values = std::make_pair(0x55555555, 0x7FFFFFFF8);
borlanic 0:02dd72d1d465 41 uint32_t test_ret = test_64(values.second);
borlanic 0:02dd72d1d465 42 bool test_res = values.first == test_ret;
borlanic 0:02dd72d1d465 43 result = result && test_res;
borlanic 0:02dd72d1d465 44 printf("64bit: 0x7FFFFFFF8: expected 0x%lX got 0x%lX ... %s\r\n", values.first, test_ret, result_str(test_res));
borlanic 0:02dd72d1d465 45 }
borlanic 0:02dd72d1d465 46
borlanic 0:02dd72d1d465 47 { // 0xFFFFFFFF * 24 = 0x17ffffffe8
borlanic 0:02dd72d1d465 48 std::pair<uint32_t, uint64_t> values = std::make_pair(0xFFFFFFFF, 0x17FFFFFFE8);
borlanic 0:02dd72d1d465 49 uint32_t test_ret = test_64(values.second);
borlanic 0:02dd72d1d465 50 bool test_res = values.first == test_ret;
borlanic 0:02dd72d1d465 51 result = result && test_res;
borlanic 0:02dd72d1d465 52 printf("64bit: 0x17FFFFFFE8: expected 0x%lX got 0x%lX ... %s\r\n", values.first, test_ret, result_str(test_res));
borlanic 0:02dd72d1d465 53 }
borlanic 0:02dd72d1d465 54
borlanic 0:02dd72d1d465 55 GREENTEA_TESTSUITE_RESULT(result);
borlanic 0:02dd72d1d465 56 }