mingo/esm/operators/expression/arithmetic/sigmoid.js

MongoDB query language for in-memory objects

import { computeValue } from "../../../core/_internal";
import { isNil, isNumber } from "../../../util";
const PRECISION = 1e10;
const $sigmoid = (obj, expr, options) => {
  if (isNil(expr)) return null;
  const args = computeValue(obj, expr, null, options);
  const { input, onNull } = isNumber(args) ? { input: args } : args;
  if (isNil(input)) return onNull ?? null;
  assert(
    isNumber(input),
    `$sigmoid: expression must resolve to number: ${input}`
  );
  const result = 1 / (1 + Math.exp(-input));
  return Math.round(result * PRECISION) / PRECISION;
};
export {
  $sigmoid
};