The result of reinterpret_cast is different for different struct types for float value

when using softfloat.. I'm extract the value 3.14f

here is code.. converting value 3.14f for testing with reinterpret_cast

using softfloat, the variabbble of data and data2 value mean 3.14f

I'm using VS 2022 compilier.

typedef unsigned long long uint64_t;
typedef struct { uint64_t v[2]; } float128_t;
typedef struct { uint64_t v; } float64_t;

int main()
{
    float128_t data;
    data.v[0] = 0x00000070507fe4d8;
    data.v[1] = 4611846459178876928;

    float64_t data2;
    data2.v = 4614253070451212288;

    auto test = *reinterpret_cast<double*>(&data.v[0]);
    auto test2 = *reinterpret_cast<double*>(&data.v[1]);
    auto test3 = *reinterpret_cast<double*>(&data);

    auto ans = *reinterpret_cast<double*>(&data2.v);
    
    std::cout << test << "  " << test2 << "  " << test3 << "  " << ans << "\n";
}

in this case, the output is 2.38331e-312 2.07125 2.38331e-312 3.14

Why variable test, test2, test3 not convert correct float value 3.14f ?

why using float64_t type and convert casting that correctly?

does no way to using float128_t type and convert casting that correctly?