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Javadoc clarification for signum 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1061096 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastian Bazley 2011-01-20 01:28:59 +00:00
parent 0a9d609f98
commit a0c8e5c701
1 changed files with 4 additions and 4 deletions
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8
src/main/java/org/apache/commons/math/util/FastMath.java
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@ -576,19 +576,19 @@ public class FastMath {
/** Compute the signum of a number.
* The signum is -1 for negative numbers, +1 for positive numbers and 0 otherwise
* @param a number on which evaluation is done
* @return -1, 0, +1 or NaN depending on sign of a
* @return -1.0, -0.0, +0.0, +1.0 or NaN depending on sign of a
*/
public static double signum(final double a) {
return (a < 0.0) ? -1.0 : ((a > 0.0) ? 1.0 : a);
return (a < 0.0) ? -1.0 : ((a > 0.0) ? 1.0 : a); // return +0.0/-0.0/NaN depending on a
}
/** Compute the signum of a number.
* The signum is -1 for negative numbers, +1 for positive numbers and 0 otherwise
* @param a number on which evaluation is done
* @return -1, 0, +1 or NaN depending on sign of a
* @return -1.0, -0.0, +0.0, +1.0 or NaN depending on sign of a
*/
public static float signum(final float a) {
return (a < 0.0f) ? -1.0f : ((a > 0.0f) ? 1.0f : a);
return (a < 0.0f) ? -1.0f : ((a > 0.0f) ? 1.0f : a); // return +0.0/-0.0/NaN depending on a
}
/** Compute next number towards positive infinity.