Method ToUnsigned

lua.go:787–793

ToUnsigned converts the Lua value at index to a Go uint. The Lua value must be a number or a string convertible to a number. If the number is not an unsigned integer, it is truncated in some non-specified way. If the number is outside the range of uint, it is normalized to the remainder of its div

(index int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_tounsignedx
func (l *State) ToUnsigned(index int) (uint, bool) {
	if n, ok := l.toNumber(l.indexToValue(index)); ok {
		const supUnsigned = float64(^uint32(0)) + 1
		return uint(n - math.Floor(n/supUnsigned)*supUnsigned), true
	}
	return 0, false
}

// ToString  converts the Lua value at index to a Go string.  The Lua value
// must also be a string or a number; otherwise the function returns