NaN double vs float testing

NaNTesting.java

package com.databricks.unsafe.util.benchmark;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;

@State(Scope.Benchmark)
public class NaNTesting {

  @Benchmark
  public boolean doubleNaN() {
    return Double.isNaN(Float.NaN);
  }

  @Benchmark
  public boolean floatNaN() {
    return Float.isNaN(Float.NaN);
  }

  public static void main(String[] args) throws RunnerException {
    Options opt = new OptionsBuilder()
      .include(BinarySearch.class.getSimpleName())
      .warmupIterations(5)
      .measurementIterations(5)
      .forks(2)
      .jvmArgs("-ea")
      .build();

    new Runner(opt).run();
  }
}

result.txt

Benchmark              Mode  Cnt          Score          Error  Units
NaNTesting.doubleNaN  thrpt    4  470522065.357 ± 64048838.498  ops/s
NaNTesting.floatNaN   thrpt    4  465024924.176 ± 66806183.042  ops/s