diff --git a/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java b/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java index 39768024f..10e573549 100644 --- a/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java +++ b/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java @@ -27,565 +27,380 @@ import org.junit.Ignore; */ public class FastMathTestPerformance { private static final int RUNS = 10000000; - private static final double SCALE = 1000d / RUNS; - @Ignore - public void testPerformance() { - final int numberOfRuns = 10000000; - for (int j = 0; j < 10; j++) { - double x = 0; - long time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.log(Math.PI + i/* 1.0 + i/1e9 */); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.log " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.log(Math.PI + i/* 1.0 + i/1e9 */); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.log " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.pow(Math.PI + i / 1e6, i / 1e6); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.pow " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.pow(Math.PI + i / 1e6, i / 1e6); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.pow " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.exp(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.exp " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.exp(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.exp " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.sin(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.sin " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.sin(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.sin " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.asin(i / 10000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.asin " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.asin(i / 10000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.asin " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.cos(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.cos " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.cos(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.cos " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.acos(i / 10000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.acos " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.acos(i / 10000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.acos " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.tan(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.tan " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.tan(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.tan " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.atan(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.atan " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.atan(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.atan " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.cbrt(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.cbrt " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.cbrt(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.cbrt " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.cosh(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.cosh " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.cosh(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.cosh " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.sinh(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.sinh " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.sinh(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.sinh " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.tanh(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.tanh " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.tanh(i / 1000000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.tanh " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += StrictMath.expm1(-i / 100000.0); - time = System.currentTimeMillis() - time; - System.out.print("StrictMath.expm1 " + time + "\t" + x + "\t"); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.expm1(-i / 100000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.expm1 " + time + "\t" + x); - - x = 0; - time = System.currentTimeMillis(); - for (int i = 0; i < numberOfRuns; i++) - x += FastMath.expm1(-i / 100000.0); - time = System.currentTimeMillis() - time; - System.out.println("FastMath.expm1 " + time + "\t" + x); - - } + private void print(String funcName) { + System.out.print(funcName + " "); + } + private void print(long time, long unitTime) { + final double ratio = time / (double) unitTime; + System.out.print(time + " " + ratio + " "); + } + private void println(long time, long unitTime) { + print(time, unitTime); + System.out.println(); } @Test public void testLog() { - System.out.print("log "); + print("log"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.log(Math.PI + i/* 1.0 + i/1e9 */); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.log(Math.PI + i/* 1.0 + i/1e9 */); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.log(Math.PI + i/* 1.0 + i/1e9 */); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testPow() { - System.out.print("pow "); + print("pow"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.pow(Math.PI + i / 1e6, i / 1e6); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.pow(Math.PI + i / 1e6, i / 1e6); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.pow(Math.PI + i / 1e6, i / 1e6); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testExp() { - System.out.print("exp "); + print("exp"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.exp(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.exp(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.exp(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testSin() { - System.out.print("sin "); + print("sin"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.sin(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.sin(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.sin(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testAsin() { - System.out.print("asin "); + print("asin"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.asin(i / 10000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.asin(i / 10000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.asin(i / 10000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testCos() { - System.out.print("cos "); + print("cos"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.cos(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.cos(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.cos(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testAcos() { - System.out.print("acos "); + print("acos"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.acos(i / 10000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.acos(i / 10000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.acos(i / 10000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testTan() { - System.out.print("tan "); + print("tan"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.tan(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.tan(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.tan(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testAtan() { - System.out.print("atan "); + print("atan"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.atan(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.atan(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.atan(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testCbrt() { - System.out.print("cbrt "); + print("cbrt"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.cbrt(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.cbrt(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.cbrt(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testCosh() { - System.out.print("cosh "); + print("cosh"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.cosh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.cosh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.cosh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testSinh() { - System.out.print("sinh "); + print("sinh"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.sinh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.sinh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.sinh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testTanh() { - System.out.print("tanh "); + print("tanh"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.tanh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.tanh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.tanh(i / 1000000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } @Test public void testExpm1() { - System.out.print("expm1 "); + print("expm1"); double x = 0; long time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += StrictMath.expm1(-i / 100000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + long unitTime = time; + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += FastMath.expm1(-i / 100000.0); time = System.currentTimeMillis() - time; - System.out.print(time * SCALE + " "); + print(time, unitTime); x = 0; time = System.currentTimeMillis(); for (int i = 0; i < RUNS; i++) x += Math.expm1(-i / 100000.0); time = System.currentTimeMillis() - time; - System.out.println(time * SCALE); + println(time, unitTime); } }