/*
THIS INFRAGISTICS ULTIMATE SOFTWARE LICENSE  AGREEMENT ("AGREEMENT") LOCATED HERE:
https://www.infragistics.com/legal/license/igultimate-la
https://www.infragistics.com/legal/license/igultimate-eula
GOVERNS THE LICENSING, INSTALLATION AND USE OF INFRAGISTICS SOFTWARE. BY DOWNLOADING AND/OR INSTALLING AND USING INFRAGISTICS SOFTWARE:  you are indicating that you have read and understand this Agreement, and agree to be legally bound by it on behalf of the yourself and your company.
*/
import { BuiltInFunctionBase } from "./BuiltInFunctionBase";
import { ExcelCalcValue } from "./ExcelCalcValue";
import { ExcelCalcErrorValue } from "./ExcelCalcErrorValue";
import { markType } from "igniteui-angular-core";
import { truncate, intDivide } from "igniteui-angular-core";
/**
 * @hidden
 */
export class UltraCalcFunctionPermut extends BuiltInFunctionBase {
    evaluate(a, b) {
        let c = a.pop();
        if (c.isError) {
            return new ExcelCalcValue(c.toErrorValue());
        }
        let d = truncate(c._toDecimal2());
        c = a.pop();
        if (c.isError) {
            return new ExcelCalcValue(c.toErrorValue());
        }
        let e = truncate(c._toDecimal2());
        if (e < 0 || d < 0 || d > e) {
            return new ExcelCalcValue(new ExcelCalcErrorValue(4));
        }
        let f = UltraCalcFunctionPermut._ak(e, d);
        return new ExcelCalcValue(f);
    }
    get_name() {
        return "permut";
    }
    get name() {
        return this.get_name();
    }
    get_minArgs() {
        return 2;
    }
    get minArgs() {
        return this.get_minArgs();
    }
    get_maxArgs() {
        return 2;
    }
    get maxArgs() {
        return this.get_maxArgs();
    }
    static _ak(a, b) {
        if (b > a) {
            return NaN;
        }
        let c = 1;
        while (true) {
            if (b == 0) {
                break;
            }
            if (b < 0) {
                break;
            }
            if (b > intDivide(a, 2)) {
                b = a - b;
            }
            else {
                c *= a;
                a--;
                b--;
            }
        }
        return c;
    }
}
UltraCalcFunctionPermut.$t = markType(UltraCalcFunctionPermut, 'UltraCalcFunctionPermut', BuiltInFunctionBase.$);
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