u32 X (f32 f) { union { f32 f; u32 n; } u; u.f = f; return u.n; }

Given the function X() is defined above, assume that u32 is a type-definition indicative of a 32-bit unsigned integer and that f32 is a type-definition indicative of a 32-bit floating-point number. Which of the following describes the purpose of the function defined above?

X() effectively rounds f to the nearest integer value, which it returns.

X() effectively performs a standard typecast and converts f to a roughly equivalent integer.

X() preserves the bit-pattern of f, which it returns as an unsigned integer of equal size.

Since u.n is never initialized, X() returns an undefined value. This function is therefore a primitive pseudo random number generator.

Since u.n is automatically initialized to zero (0) by the compiler, X() is an obtuse way of always obtaining a zero (0) value.