Converts the given number to an unsigned 32-bit integer (`uint32`) by rounding to the nearest whole number and typecasting.
If the number exceeds the range of a `uint32` (0 to 4,294,967,295), it will wrap due to typecasting.
u32(value)
u32(123456.7); // returns 123457
u32(-1); // returns 4294967295 (wrap)
u32(5000000000); // returns 705032704 (wrap)