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Added functions. 

Replaced hard-coded numbers by a named constant.
Changed display format for ratios.


git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1063931 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gilles Sadowski 2011-01-27 00:31:26 +00:00
parent e56bea66fd
commit ec822cf7d4
1 changed files with 176 additions and 36 deletions
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212
src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java
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@ -30,11 +30,12 @@ import org.junit.Test;
*/
public class FastMathTestPerformance {
private static final int RUNS = Integer.parseInt(System.getProperty("testRuns","10000000"));
private static final double F1 = 1d / RUNS;
// Header format
private static final String FMT_HDR = "%-5s %13s %13s %13s Runs=%d Java %s (%s) %s (%s)";
// Detail format
private static final String FMT_DTL = "%-5s %6d %6.2f %6d %6.2f %6d %6.2f";
private static final String FMT_DTL = "%-5s %6d %6.1f %6d %6.4f %6d %6.4f";
@BeforeClass
public static void header() {
@ -56,6 +57,7 @@ public class FastMathTestPerformance {
mathTime / RUNS, (double) mathTime / unitTime
));
}
@Test
public void testLog() {
double x = 0;
@ -80,23 +82,69 @@ public class FastMathTestPerformance {
}
@Test
public void testPow() {
public void testLog10() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.pow(Math.PI + i / 1e6, i / 1e6);
long strictTime = System.nanoTime() - time;
x += StrictMath.log10(Math.PI + i/* 1.0 + i/1e9 */);
long strictMath = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.pow(Math.PI + i / 1e6, i / 1e6);
x += FastMath.log10(Math.PI + i/* 1.0 + i/1e9 */);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.pow(Math.PI + i / 1e6, i / 1e6);
x += Math.log10(Math.PI + i/* 1.0 + i/1e9 */);
long mathTime = System.nanoTime() - time;
report("log10",strictMath,fastTime,mathTime);
}
@Test
public void testLog1p() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.log1p(Math.PI + i/* 1.0 + i/1e9 */);
long strictMath = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.log1p(Math.PI + i/* 1.0 + i/1e9 */);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.log1p(Math.PI + i/* 1.0 + i/1e9 */);
long mathTime = System.nanoTime() - time;
report("log1p",strictMath,fastTime,mathTime);
}
@Test
public void testPow() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.pow(Math.PI + i * F1, i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.pow(Math.PI + i * F1, i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.pow(Math.PI + i * F1, i * F1);
long mathTime = System.nanoTime() - time;
report("pow",strictTime,fastTime,mathTime);
}
@ -106,19 +154,19 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.exp(i / 1000000.0);
x += StrictMath.exp(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.exp(i / 1000000.0);
x += FastMath.exp(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.exp(i / 1000000.0);
x += Math.exp(i * F1);
long mathTime = System.nanoTime() - time;
report("exp",strictTime,fastTime,mathTime);
@ -129,19 +177,19 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.sin(i / 1000000.0);
x += StrictMath.sin(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.sin(i / 1000000.0);
x += FastMath.sin(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.sin(i / 1000000.0);
x += Math.sin(i * F1);
long mathTime = System.nanoTime() - time;
report("sin",strictTime,fastTime,mathTime);
@ -175,19 +223,19 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.cos(i / 1000000.0);
x += StrictMath.cos(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.cos(i / 1000000.0);
x += FastMath.cos(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.cos(i / 1000000.0);
x += Math.cos(i * F1);
long mathTime = System.nanoTime() - time;
report("cos",strictTime,fastTime,mathTime);
@ -220,19 +268,19 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.tan(i / 1000000.0);
x += StrictMath.tan(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.tan(i / 1000000.0);
x += FastMath.tan(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.tan(i / 1000000.0);
x += Math.tan(i * F1);
long mathTime = System.nanoTime() - time;
report("tan",strictTime,fastTime,mathTime);
@ -243,65 +291,134 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.atan(i / 1000000.0);
x += StrictMath.atan(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.atan(i / 1000000.0);
x += FastMath.atan(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.atan(i / 1000000.0);
x += Math.atan(i * F1);
long mathTime = System.nanoTime() - time;
report("atan",strictTime,fastTime,mathTime);
}
@Test
public void testAtan2() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.atan2(i * F1, i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.atan2(i * F1, i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.atan2(i * F1, i * F1);
long mathTime = System.nanoTime() - time;
report("atan2",strictTime,fastTime,mathTime);
}
@Test
public void testHypot() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.hypot(i * F1, i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.hypot(i * F1, i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.hypot(i * F1, i * F1);
long mathTime = System.nanoTime() - time;
report("hypot",strictTime,fastTime,mathTime);
}
@Test
public void testCbrt() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.cbrt(i / 1000000.0);
x += StrictMath.cbrt(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.cbrt(i / 1000000.0);
x += FastMath.cbrt(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.cbrt(i / 1000000.0);
x += Math.cbrt(i * F1);
long mathTime = System.nanoTime() - time;
report("cbrt",strictTime,fastTime,mathTime);
}
@Test
public void testSqrt() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.sqrt(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.sqrt(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.sqrt(i * F1);
long mathTime = System.nanoTime() - time;
report("sqrt",strictTime,fastTime,mathTime);
}
@Test
public void testCosh() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.cosh(i / 1000000.0);
x += StrictMath.cosh(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.cosh(i / 1000000.0);
x += FastMath.cosh(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.cosh(i / 1000000.0);
x += Math.cosh(i * F1);
long mathTime = System.nanoTime() - time;
report("cosh",strictTime,fastTime,mathTime);
@ -312,19 +429,19 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.sinh(i / 1000000.0);
x += StrictMath.sinh(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.sinh(i / 1000000.0);
x += FastMath.sinh(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.sinh(i / 1000000.0);
x += Math.sinh(i * F1);
long mathTime = System.nanoTime() - time;
report("sinh",strictTime,fastTime,mathTime);
@ -335,19 +452,19 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.tanh(i / 1000000.0);
x += StrictMath.tanh(i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.tanh(i / 1000000.0);
x += FastMath.tanh(i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.tanh(i / 1000000.0);
x += Math.tanh(i * F1);
long mathTime = System.nanoTime() - time;
report("tanh",strictTime,fastTime,mathTime);
@ -358,20 +475,43 @@ public class FastMathTestPerformance {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.expm1(-i / 100000.0);
x += StrictMath.expm1(-i * F1);
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.expm1(-i / 100000.0);
x += FastMath.expm1(-i * F1);
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.expm1(-i / 100000.0);
x += Math.expm1(-i * F1);
long mathTime = System.nanoTime() - time;
report("expm1",strictTime,fastTime,mathTime);
}
@Test
public void testAbs() {
double x = 0;
long time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += StrictMath.abs(i * (1 - 0.5 * RUNS));
long strictTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += FastMath.abs(i * (1 - 0.5 * RUNS));
long fastTime = System.nanoTime() - time;
x = 0;
time = System.nanoTime();
for (int i = 0; i < RUNS; i++)
x += Math.abs(i * (1 - 0.5 * RUNS));
long mathTime = System.nanoTime() - time;
report("abs",strictTime,fastTime,mathTime);
}
}