Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

TESTS/mbedmicro-mbed/div/main.cpp@1:d96dbedaebdb, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:54:50 2016 +0000
Revision:
1:d96dbedaebdb
Parent:
0:6c56fb4bc5f0 
Removed extra directories for other platforms

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 #include <utility> // std::pair
nexpaq 0:6c56fb4bc5f0 2 #include "mbed.h"
nexpaq 0:6c56fb4bc5f0 3 #include "greentea-client/test_env.h"
nexpaq 0:6c56fb4bc5f0 4
nexpaq 0:6c56fb4bc5f0 5 uint32_t test_64(uint64_t ticks) {
nexpaq 0:6c56fb4bc5f0 6 ticks >>= 3; // divide by 8
nexpaq 0:6c56fb4bc5f0 7 if (ticks > 0xFFFFFFFF) {
nexpaq 0:6c56fb4bc5f0 8 ticks /= 3;
nexpaq 0:6c56fb4bc5f0 9 } else {
nexpaq 0:6c56fb4bc5f0 10 ticks = (ticks * 0x55555556) >> 32; // divide by 3
nexpaq 0:6c56fb4bc5f0 11 }
nexpaq 0:6c56fb4bc5f0 12 return (uint32_t)(0xFFFFFFFF & ticks);
nexpaq 0:6c56fb4bc5f0 13 }
nexpaq 0:6c56fb4bc5f0 14
nexpaq 0:6c56fb4bc5f0 15 const char *result_str(bool result) {
nexpaq 0:6c56fb4bc5f0 16 return result ? "[OK]" : "[FAIL]";
nexpaq 0:6c56fb4bc5f0 17 }
nexpaq 0:6c56fb4bc5f0 18
nexpaq 0:6c56fb4bc5f0 19 int main() {
nexpaq 0:6c56fb4bc5f0 20 GREENTEA_SETUP(5, "default_auto");
nexpaq 0:6c56fb4bc5f0 21
nexpaq 0:6c56fb4bc5f0 22 bool result = true;
nexpaq 0:6c56fb4bc5f0 23
nexpaq 0:6c56fb4bc5f0 24 { // 0xFFFFFFFF * 8 = 0x7fffffff8
nexpaq 0:6c56fb4bc5f0 25 std::pair<uint32_t, uint64_t> values = std::make_pair(0x55555555, 0x7FFFFFFF8);
nexpaq 0:6c56fb4bc5f0 26 uint32_t test_ret = test_64(values.second);
nexpaq 0:6c56fb4bc5f0 27 bool test_res = values.first == test_ret;
nexpaq 0:6c56fb4bc5f0 28 result = result && test_res;
nexpaq 0:6c56fb4bc5f0 29 printf("64bit: 0x7FFFFFFF8: expected 0x%lX got 0x%lX ... %s\r\n", values.first, test_ret, result_str(test_res));
nexpaq 0:6c56fb4bc5f0 30 }
nexpaq 0:6c56fb4bc5f0 31
nexpaq 0:6c56fb4bc5f0 32 { // 0xFFFFFFFF * 24 = 0x17ffffffe8
nexpaq 0:6c56fb4bc5f0 33 std::pair<uint32_t, uint64_t> values = std::make_pair(0xFFFFFFFF, 0x17FFFFFFE8);
nexpaq 0:6c56fb4bc5f0 34 uint32_t test_ret = test_64(values.second);
nexpaq 0:6c56fb4bc5f0 35 bool test_res = values.first == test_ret;
nexpaq 0:6c56fb4bc5f0 36 result = result && test_res;
nexpaq 0:6c56fb4bc5f0 37 printf("64bit: 0x17FFFFFFE8: expected 0x%lX got 0x%lX ... %s\r\n", values.first, test_ret, result_str(test_res));
nexpaq 0:6c56fb4bc5f0 38 }
nexpaq 0:6c56fb4bc5f0 39
nexpaq 0:6c56fb4bc5f0 40 GREENTEA_TESTSUITE_RESULT(result);
nexpaq 0:6c56fb4bc5f0 41 }