Convert int bits to float bits

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Vexingly, if you were using double and long, there is BitConverter.DoubleToInt64Bits and BitConverter.Int64BitsToDouble. I have genuinely no idea why there aren’t Single / Int32 equivalents, as it forces you to create a pointless byte[] on the heap (it doesn’t even let you pass in a pre-existing buffer).

If you are happy to use unsafe code, you can actually do it all in a simply data thunk, without any method calls or arrays:

public static unsafe int SingleToInt32Bits(float value) {
    return *(int*)(&value);
}
public static unsafe float Int32BitsToSingle(int value) {
    return *(float*)(&value);
}

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