var __Ox957f2 = ["value", "bjr", "getElementById", "gdh", "请输入数字", "jg", "toFixed","PI", "undefined", "log"];
function is_float(_0xac82x15){var _0xac82x20=/^(-?\d+)(\.\d+)?$/;if(!_0xac82x20['test'](_0xac82x15)){return false};return true}
function showerror(e){
        toastr.warning(e);
}
function calc() {
    var _0x7293x2 = document[__Ox957f2[0x2]](__Ox957f2[0x1])[__Ox957f2[0x0]];
    var _0x7293x3 = document[__Ox957f2[0x2]](__Ox957f2[0x3])[__Ox957f2[0x0]];
    if (!is_float(_0x7293x2) || !is_float(_0x7293x3)) {
        showerror(__Ox957f2[0x4]);
        return false
    } else {
        _0x7293x2 = parseFloat(_0x7293x2);
        _0x7293x3 = parseFloat(_0x7293x3);
        document[__Ox957f2[0x2]](__Ox957f2[0x5])[__Ox957f2[0x0]] = (1/ 3* Math[__Ox957f2[0x7]] * _0x7293x2 * _0x7293x2 * _0x7293x3)[__Ox957f2[0x6]](4)
    }
}