Function double_to_ufix64

pub extern "C" fn double_to_ufix64(v: f64, n: i32) -> u64

Converts an f64 to an unsigned fixed point 64-bit integer representation where n specifies the position of the binary point in the resulting fixed point representation, e.g. f(0.5f, 16) == 0x8000. This method rounds towards -Infinity, and clamps the resulting integer to lie within the range 0x0000000000000000 to 0xFFFFFFFFFFFFFFFF