// Check if number is an integer
export const isInt = (value: number): boolean => {
  if (typeof value === "boolean") return true;

  return isFinite(value) ? value === Math.round(value) : false;
};

// Calculate the sign of a number
export const sign =
  Math.sign ||
  function (x: number): number {
    if (x > 0) {
      return 1;
    } else if (x < 0) {
      return -1;
    } else {
      return 0;
    }
  };

// Calculate the base-2 logarithm of a number
export const log2 =
  Math.log2 ||
  function log2(x: number) {
    return Math.log(x) / Math.LN2;
  };

// Calculate the base-10 logarithm of a number
export const log10 =
  Math.log10 ||
  function log10(x: number) {
    return Math.log(x) / Math.LN10;
  };

// Calculate cubic root for a number
export const cbrt =
  Math.cbrt ||
  function cbrt(x: number) {
    if (x === 0) return x;

    const negate = x < 0;
    let result;
    if (negate) {
      x = -x;
    }

    if (isFinite(x)) {
      result = Math.exp(Math.log(x) / 3);
      result = (x / (result * result) + 2 * result) / 3;
    } else {
      result = x;
    }
    return negate ? -result : result;
  };

export const clamp = (n: number, min: number, max: number): number => {
  return Math.min(Math.max(n, min), max);
};

export const sqrt = (n: number): number => {
  let x = 1.0;
  let z = 1.0;
  for (let i = 0; i < 10; i++) {
    z = x - (x * x - n) / (2 * x);

    if (z == x) {
      return z;
    }

    x = z;
  }

  return x;
};