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/*
* This is component of StoRM - Cuda Plugin to check whether a pair of uint_fast64_t and float gets auto-aligned to match 64bit boundaries
*/
#include <cstdint>
#include <utility>
#include <vector>
#define CONTAINER_SIZE 100ul
int main(int argc, char* argv[]) {
int result = 0;
std::vector<std::pair<uint_fast64_t, float>> myVector;
for (size_t i = 0; i < CONTAINER_SIZE; ++i) {
myVector.push_back(std::make_pair(i, 42.12345f * i));
}
char* firstUintPointer = reinterpret_cast<char*>(&(myVector.at(0).first));
char* secondUintPointer = reinterpret_cast<char*>(&(myVector.at(1).first));
ptrdiff_t uintDiff = secondUintPointer - firstUintPointer;
if (uintDiff == (2 * sizeof(uint_fast64_t))) {
result = 2;
} else if (uintDiff == (sizeof(uint_fast64_t) + sizeof(float))) {
result = 3;
} else {
result = -5;
}
return result;
}