How to use

even_p

method

in

org.jruby.RubyBignum

private IRubyObject powerOther19(ThreadContext context, IRubyObject other) {
  Ruby runtime = context.runtime;
  long a = value;
  if (other instanceof RubyBignum) {
    if (other.callMethod(context, "<", RubyFixnum.zero(runtime)).isTrue()) {
      return RubyRational.newRationalRaw(runtime, this).callMethod(context, "**", other);
    }
    if (a == 0) return RubyFixnum.zero(runtime);
    if (a == 1) return RubyFixnum.one(runtime);
    if (a == -1) {
      return ((RubyBignum)other).even_p(context).isTrue() ? RubyFixnum.one(runtime) : RubyFixnum.minus_one(runtime);
    }
    RubyBignum.newBignum(runtime, RubyBignum.fix2big(this)).op_pow(context, other);
  } else if (other instanceof RubyFloat) {
    double b = ((RubyFloat)other).getValue();
    if (b == 0.0 || a == 1) return runtime.newFloat(1.0);
    if (a == 0) return runtime.newFloat(b < 0 ? 1.0 / 0.0 : 0.0);
    return RubyFloat.newFloat(runtime, Math.pow(a, b));
  }
  return coerceBin(context, "**", other);
}

private IRubyObject powerOther19(ThreadContext context, IRubyObject other) {
  Ruby runtime = context.runtime;
  long a = value;
  if (other instanceof RubyBignum) {
    if (other.callMethod(context, "<", RubyFixnum.zero(runtime)).isTrue()) {
      return RubyRational.newRationalRaw(runtime, this).callMethod(context, "**", other);
    }
    if (a == 0) return RubyFixnum.zero(runtime);
    if (a == 1) return RubyFixnum.one(runtime);
    if (a == -1) {
      return ((RubyBignum)other).even_p(context).isTrue() ? RubyFixnum.one(runtime) : RubyFixnum.minus_one(runtime);
    }
    RubyBignum.newBignum(runtime, RubyBignum.fix2big(this)).op_pow(context, other);
  } else if (other instanceof RubyFloat) {
    double b = ((RubyFloat)other).getValue();
    if (b == 0.0 || a == 1) return runtime.newFloat(1.0);
    if (a == 0) return runtime.newFloat(b < 0 ? 1.0 / 0.0 : 0.0);
    return RubyFloat.newFloat(runtime, Math.pow(a, b));
  }
  return coerceBin(context, "**", other);
}

private IRubyObject powerOther(ThreadContext context, IRubyObject other) {
  final Ruby runtime = context.runtime;
  final long a = this.value;
  if (other instanceof RubyBignum) {
    if (sites(context).op_lt_bignum.call(context, other, other, RubyFixnum.zero(runtime)).isTrue()) {
      RubyRational rational = RubyRational.newRationalRaw(runtime, this);
      return numFuncall(context, rational, sites(context).op_exp_rational, other);
    }
    if (a == 0) return RubyFixnum.zero(runtime);
    if (a == 1) return RubyFixnum.one(runtime);
    if (a == -1) {
      return ((RubyBignum) other).even_p(context).isTrue() ? RubyFixnum.one(runtime) : RubyFixnum.minus_one(runtime);
    }
    return RubyBignum.newBignum(runtime, RubyBignum.long2big(a)).op_pow(context, other);
  }
  if (other instanceof RubyFloat) {
    double b = ((RubyFloat)other).getValue();
    if (b == 0.0 || a == 1) return runtime.newFloat(1.0);
    if (a == 0) return runtime.newFloat(b < 0 ? 1.0 / 0.0 : 0.0);
    return RubyFloat.newFloat(runtime, Math.pow(a, b));
  }
  return coerceBin(context, sites(context).op_exp, other);
}

private IRubyObject powerOther(ThreadContext context, IRubyObject other) {
  final Ruby runtime = context.runtime;
  final long a = this.value;
  if (other instanceof RubyBignum) {
    if (sites(context).op_lt_bignum.call(context, other, other, RubyFixnum.zero(runtime)).isTrue()) {
      RubyRational rational = RubyRational.newRationalRaw(runtime, this);
      return numFuncall(context, rational, sites(context).op_exp_rational, other);
    }
    if (a == 0) return RubyFixnum.zero(runtime);
    if (a == 1) return RubyFixnum.one(runtime);
    if (a == -1) {
      return ((RubyBignum) other).even_p(context).isTrue() ? RubyFixnum.one(runtime) : RubyFixnum.minus_one(runtime);
    }
    return RubyBignum.newBignum(runtime, RubyBignum.long2big(a)).op_pow(context, other);
  }
  if (other instanceof RubyFloat) {
    double b = ((RubyFloat)other).getValue();
    if (b == 0.0 || a == 1) return runtime.newFloat(1.0);
    if (a == 0) return runtime.newFloat(b < 0 ? 1.0 / 0.0 : 0.0);
    return RubyFloat.newFloat(runtime, Math.pow(a, b));
  }
  return coerceBin(context, sites(context).op_exp, other);
}