1import { F7Exception } from "../../errors/F7Exception";
 2import { SheetColumnRowKey } from "../../models/common/SheetColumnRowKey";
 3import { Complex } from "../../models/common/Types";
 4import { Converters } from "../../utils/Converters";
 5import { Numbers } from "../../utils/Numbers";
 6import { AbstractFormula } from "../AbstractFormula";
 7import { FormulaName } from "../FormulaName";
 8
 9export class SIGN extends AbstractFormula {
10  static SELF: SIGN = new SIGN();
11  NAME = FormulaName.SIGN;
12
13  internal(origin: SheetColumnRowKey, ...values: Array<Complex>) {
14    AbstractFormula.checkLength(values.length, 1, this.NAME);
15    const value = Converters.first(this.collateralLookup(origin, values[0]));
16    if (value instanceof F7Exception) {
17      return value;
18    }
19    const number = Converters.toNumber(value);
20    if (Numbers.isZero(number)) {
21      return 0;
22    }
23    return number > 0 ? 1 : -1;
24  }
25}