* @since 13.0
   */
  public static boolean fuzzyEquals(double a, double b, double tolerance) {
    MathPreconditions.checkNonNegative("tolerance", tolerance);
    return Math.copySign(a - b, 1.0) <= tolerance
        // copySign(x, 1.0) is a branch-free version of abs(x), but with different NaN semantics
        || (a == b) // needed to ensure that infinities equal themselves
        || (Double.isNaN(a) && Double.isNaN(b));
  }

pkg math, func Atan(float64) float64
pkg math, func Atan2(float64, float64) float64
pkg math, func Atanh(float64) float64
pkg math, func Cbrt(float64) float64
pkg math, func Ceil(float64) float64
pkg math, func Copysign(float64, float64) float64
pkg math, func Cos(float64) float64
pkg math, func Cosh(float64) float64
pkg math, func Dim(float64, float64) float64
pkg math, func Erf(float64) float64