const expected = [2.82842712474619, 2.82842712474619]; testV2WithAndWithoutDestApprox( (a, len, newDst) => vec2.truncate(a, len, newDst), expected, [10.323759005323593, 10.323759005323593], 4.0);
const expected = [11, 12]; testV2WithAndWithoutDestApprox( (a, len, newDst) => vec2.truncate(a, len, newDst), expected, [11, 12], 14.6);