Package org.apache.commons.numbers.examples.jmh.complex

Class SinCosPerformance

java.lang.Object

org.apache.commons.numbers.examples.jmh.complex.SinCosPerformance

Direct Known Subclasses:

SinCosPerformance_jmhType_B1

public class SinCosPerformance
extends Object

Executes a benchmark to estimate the speed of sin/cos operations. This compares the Math implementation to FastMath. It would be possible to adapt FastMath to compute sin/cos together as they both use a common initial stage to map the value to the domain [0, pi/2).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SinCosPerformance.BaseNumbers	Contains an array of numbers.
static class	SinCosPerformance.Numbers	Contains an array of numbers.
static class	SinCosPerformance.NumberSize	Contains the size of numbers.
static class	SinCosPerformance.UniformNumbers	Contains an array of uniform numbers.

Constructor Summary

Constructors

Constructor	Description
SinCosPerformance()

Method Summary

Modifier and Type	Method	Description
void	baselineIdentity(SinCosPerformance.Numbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Baseline the JMH overhead for all the benchmarks that create numbers.
void	fastMathCos(SinCosPerformance.Numbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Benchmark FastMath.cos(double).
void	fastMathSin(SinCosPerformance.Numbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Benchmark FastMath.sin(double).
void	mathCos(SinCosPerformance.Numbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Benchmark Math.cos(double).
void	mathSin(SinCosPerformance.Numbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Benchmark Math.sin(double).
void	mathSin2(SinCosPerformance.Numbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Explicit benchmark without using a method reference.
void	rangeFastMathSin(SinCosPerformance.UniformNumbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Benchmark FastMath.sin(double) using a uniform range of numbers.
void	rangeMathSin(SinCosPerformance.UniformNumbers numbers, org.openjdk.jmh.infra.Blackhole bh)	Benchmark Math.sin(double) using a uniform range of numbers.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SinCosPerformance

public SinCosPerformance()

Method Detail

mathSin2

public void mathSin2(SinCosPerformance.Numbers numbers,
                     org.openjdk.jmh.infra.Blackhole bh)

Explicit benchmark without using a method reference. This is commented out as it exists for reference purposes.

Parameters:

numbers - Numbers.

bh - Data sink.

baselineIdentity

public void baselineIdentity(SinCosPerformance.Numbers numbers,
                             org.openjdk.jmh.infra.Blackhole bh)

Baseline the JMH overhead for all the benchmarks that create numbers. All other methods are expected to be slower than this.

Parameters:

numbers - Numbers.

bh - Data sink.

mathSin

public void mathSin(SinCosPerformance.Numbers numbers,
                    org.openjdk.jmh.infra.Blackhole bh)

Benchmark Math.sin(double).

Parameters:

numbers - Numbers.

bh - Data sink.

mathCos

public void mathCos(SinCosPerformance.Numbers numbers,
                    org.openjdk.jmh.infra.Blackhole bh)

Benchmark Math.cos(double).

Parameters:

numbers - Numbers.

bh - Data sink.

fastMathSin

public void fastMathSin(SinCosPerformance.Numbers numbers,
                        org.openjdk.jmh.infra.Blackhole bh)

Benchmark FastMath.sin(double).

Parameters:

numbers - Numbers.

bh - Data sink.

fastMathCos

public void fastMathCos(SinCosPerformance.Numbers numbers,
                        org.openjdk.jmh.infra.Blackhole bh)

Benchmark FastMath.cos(double).

Parameters:

numbers - Numbers.

bh - Data sink.

rangeMathSin

public void rangeMathSin(SinCosPerformance.UniformNumbers numbers,
                         org.openjdk.jmh.infra.Blackhole bh)

Benchmark Math.sin(double) using a uniform range of numbers.

Parameters:

numbers - Numbers.

bh - Data sink.

rangeFastMathSin

public void rangeFastMathSin(SinCosPerformance.UniformNumbers numbers,
                             org.openjdk.jmh.infra.Blackhole bh)

Benchmark FastMath.sin(double) using a uniform range of numbers.

Parameters:

numbers - Numbers.

bh - Data sink.