List of usage examples for java.lang Math signum
public static float signum(float f)
From source file:com.capitati.omtc.core.negotiation.SemanticVersionComparator.java
public static final ImmutablePair<Integer, SemanticVersionComponent> compare(final ISemanticVersion verOne, final ISemanticVersion verTwo) { if (verOne.equals(verTwo) == true) { return new ImmutablePair<Integer, SemanticVersionComponent>(0, SemanticVersionComponent.INVALID); }//from w w w . j av a 2s. c o m if (verOne.getMajor() == verTwo.getMajor()) { if (verOne.getMinor() == verTwo.getMinor()) { if (verOne.getPatch() == verTwo.getPatch()) { /* * Compare the pre-release components. */ final ImmutablePair<Integer, Boolean> preReleaseCompResult = compareArray( verOne.getPreRelease(), verTwo.getPreRelease()); /* * Compare the build components. */ final ImmutablePair<Integer, Boolean> buildCompResult = compareArray(verOne.getBuild(), verTwo.getBuild()); /* * Unpack the comparison values. */ final int prc = preReleaseCompResult.getLeft(); final int bc = buildCompResult.getLeft(); if ((preReleaseCompResult.getRight() == true) && (buildCompResult.getRight() == true)) { /* * There was at most one pre-release component, and at most one * build component in both versions. */ if ((Math.abs(prc) == 1) && (Math.abs(bc) == 1)) { return new ImmutablePair<Integer, SemanticVersionComponent>( (Math.signum((float) prc) == 1.0) ? -1 : 1, SemanticVersionComponent.PRE_RELEASE_AND_BUILD_VERSION); } else if ((Math.abs(prc) == 1) && (bc == 0)) { return new ImmutablePair<Integer, SemanticVersionComponent>( (Math.signum((float) prc) == 1.0) ? -1 : 1, SemanticVersionComponent.PRE_RELEASE_AND_BUILD_VERSION); } return new ImmutablePair<Integer, SemanticVersionComponent>(bc, SemanticVersionComponent.PRE_RELEASE_AND_BUILD_VERSION); } else if ((preReleaseCompResult.getRight() == true) && (buildCompResult.getRight() == false)) { /* * One of the versions had a null pre-release. */ return new ImmutablePair<Integer, SemanticVersionComponent>(bc, SemanticVersionComponent.PRE_RELEASE_AND_BUILD_VERSION); } /* * Either one of the version has a null build or both versions where * fully specified. */ return new ImmutablePair<Integer, SemanticVersionComponent>((Math.abs(prc) == 1) ? prc : bc, SemanticVersionComponent.PRE_RELEASE_AND_BUILD_VERSION); } else { return new ImmutablePair<Integer, SemanticVersionComponent>( verOne.getPatch() - verTwo.getPatch(), SemanticVersionComponent.PATCH_VERSION); } } else { return new ImmutablePair<Integer, SemanticVersionComponent>(verOne.getMinor() - verTwo.getMinor(), SemanticVersionComponent.MINOR_VERSION); } } return new ImmutablePair<Integer, SemanticVersionComponent>(verOne.getMajor() - verTwo.getMajor(), SemanticVersionComponent.MAJOR_VERSION); }
From source file:edu.emory.mathcs.nlp.common.util.MathUtils.java
static public int signum(double d) { return (int) Math.signum(d); }
From source file:com.opengamma.analytics.math.statistics.distribution.LaplaceDistribution.java
/** * {@inheritDoc}/*from w w w .j a v a2s . com*/ */ @Override public double getCDF(final Double x) { Validate.notNull(x); return 0.5 * (1 + Math.signum(x - _mu) * (1 - Math.exp(-Math.abs(x - _mu) / _b))); }
From source file:com.google.android.apps.santatracker.doodles.tilt.StickyActor.java
/** * Cause the other actor to be slowed down by this actor. */// w ww . java 2s.com @Override public boolean resolveCollision(Actor other, float deltaMs) { if (!isEnabled || other.velocity.getLength() == 0 || !collisionBody.contains(other.position)) { // Don't bother resolving the collision if the other actor is either not moving, or if the // other actor is not colliding with this object. return false; } float deltaSeconds = deltaMs / 1000.0f; Vector2D acceleration = Vector2D.get(other.velocity).normalize(); if (other.velocity.getLength() < 400) { acceleration.scale(0.01f * stickiness * Constants.GRAVITY); } else { acceleration.scale(stickiness * Constants.GRAVITY); } if (Math.signum(other.velocity.x - acceleration.x * deltaSeconds) != Math.signum(other.velocity.x)) { // Don't allow stickiness to accelerate the ball in the other direction. other.velocity.x = 0; other.velocity.y = 0; } else { other.velocity.x -= acceleration.x * deltaSeconds; other.velocity.y -= acceleration.y * deltaSeconds; } return false; }
From source file:at.meikel.dmrl.webapp.rest.PlayerService.java
@RequestMapping(value = { "/playersByTeam/{teamName}" }, method = RequestMethod.GET)
@ResponseBody//from www .j a v a 2 s. c o m
public List<Player> getPlayersByTeam(@PathVariable String teamName) {
List<Player> result = null;
if (server != null) {
result = server.getRankingList().find(teamName);
}
if (result == null) {
result = new Vector<Player>();
}
Collections.sort(result, new Comparator<Player>() {
@Override
public int compare(Player p1, Player p2) {
if (p1 == null) {
return p2 == null ? 0 : 1;
} else {
if (p2 == null) {
return -1;
} else {
return (int) Math.signum(p1.getRanglistenwert() - p2.getRanglistenwert());
}
}
}
});
return result;
}
From source file:com.github.riccardove.easyjasub.commandline.CommandLineOptionList.java
public void printHelp(PrintWriter stream, String usage, String header, String footer) { HelpFormatter formatter = new HelpFormatter(); formatter.setOptionComparator(new Comparator<Option>() { @Override/*from w w w .ja v a2 s . com*/ public int compare(Option opt1, Option opt2) { return (int) Math.signum(optionsOrder.get(opt1.getOpt()) - optionsOrder.get(opt2.getOpt())); } }); formatter.printHelp(stream, HelpFormatter.DEFAULT_WIDTH, usage, header, options, HelpFormatter.DEFAULT_LEFT_PAD, HelpFormatter.DEFAULT_DESC_PAD, footer); }
From source file:com.opengamma.analytics.math.statistics.distribution.LaplaceDistribution.java
/** * {@inheritDoc}/*from w w w.ja v a 2 s .co m*/ */ @Override public double getInverseCDF(final Double p) { Validate.notNull(p); Validate.isTrue(p >= 0 && p <= 1, "Probability must lie between 0 and 1 (inclusive)"); return _mu - _b * Math.signum(p - 0.5) * Math.log(1 - 2 * Math.abs(p - 0.5)); }
From source file:org.apache.tajo.rule.base.CheckHadoopRuntimeVersionRule.java
private int compareVersion(int[] left, int[] right) { int returnValue = 0; int minLength = Math.min(left.length, right.length); for (int idx = 0; idx < minLength; idx++) { returnValue = (int) Math.signum(left[idx] - right[idx]); if (returnValue != 0) { break; }// w w w . j a v a 2 s.c o m } if (returnValue == 0) { returnValue = (int) Math.signum(left.length - right.length); } return returnValue; }
From source file:com.opengamma.analytics.financial.interestrate.payments.method.CouponFixedAccruedCompoundingDiscountingMethod.java
/** * Computes the present value of the fixed coupon with positive notional (abs(notional) is used) by discounting. * @param cpn The coupon.//from www . j a va2 s . co m * @param curves The curve bundle. * @return The present value. */ public CurrencyAmount presentValuePositiveNotional(final CouponFixedAccruedCompounding cpn, final YieldCurveBundle curves) { Validate.notNull(curves); Validate.notNull(cpn); return CurrencyAmount.of(cpn.getCurrency(), Math.signum(cpn.getNotional()) * presentValue(cpn, curves).getAmount()); }
From source file:gedi.util.math.stat.testing.MantelHaenszelTest.java
/** * Returns this!/* w w w. ja v a 2 s .c o m*/ * @param table * @return * @throws MathException */ public MantelHaenszelTest compute(TwoByTwoByKTable table) { this.table = table; double delta = table.getDelta(); double yates = correct && (delta >= 0.5) ? 0.5 : 0; double deltayates = delta - yates; stat = deltayates * deltayates / table.getVarianceEstimate(); if (h1 == H1.NOT_EQUAL) pval = stat > 30 ? 0 : (1 - chisq.cumulativeProbability(stat)); else if (h1 == H1.LESS_THAN) pval = norm.cumulativeProbability(Math.signum(delta) * Math.sqrt(stat)); else pval = 1 - norm.cumulativeProbability(Math.signum(delta) * Math.sqrt(stat)); estimate = table.getOddsRatio(); double sd = table.computeSD(); if (h1 == H1.LESS_THAN) { lowerConf = 0; upperConf = estimate * Math.exp(norm.inverseCumulativeProbability(confLevel) * sd); } else if (h1 == H1.GREATER_THAN) { lowerConf = estimate * Math.exp(norm.inverseCumulativeProbability(1 - confLevel) * sd); upperConf = Double.POSITIVE_INFINITY; } else { lowerConf = estimate * Math.exp(norm.inverseCumulativeProbability((1 - confLevel) / 2) * sd); upperConf = estimate * Math.exp(-norm.inverseCumulativeProbability((1 - confLevel) / 2) * sd); } return this; }