Question

I’m trying to use JSPack to convert from double to array of octets.

This code:

jsp = new JSPack();
t = jsp.Pack("d", 2.0);

results in t being the array [127, 240, 0, 0, 0, 0, 0, 1].

What am I doing wrong?

Answer 1

The documentation says:

Pack(fmt, values)

Return an octet array containing the packed values array.

Indeed:

new JSPack().Pack("d", [2])

returns:

[64, 0, 0, 0, 0, 0, 0, 0]

which seems correct (I get the same result with typed arrays: Float64Array to Uint8Array).