git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1003504 13f79535-47bb-0310-9956-ffa450edef68tags/POI-3.7
<changes> | <changes> | ||||
<release version="3.7-beta4" date="2010-??-??"> | <release version="3.7-beta4" date="2010-??-??"> | ||||
<action dev="poi-developers" type="fix">50033 - Improved rounding in MOD</action> | |||||
<action dev="poi-developers" type="add">Generate SHA1 hashes of distribution files, alongside existing MD5 ones</action> | <action dev="poi-developers" type="add">Generate SHA1 hashes of distribution files, alongside existing MD5 ones</action> | ||||
</release> | </release> | ||||
<release version="3.7-beta3" date="2010-09-24"> | <release version="3.7-beta3" date="2010-09-24"> |
package org.apache.poi.hssf.record.formula.functions; | package org.apache.poi.hssf.record.formula.functions; | ||||
/** | /** | ||||
* @author Amol S. Deshmukh < amolweb at ya hoo dot com > | * @author Amol S. Deshmukh < amolweb at ya hoo dot com > | ||||
* This class is an extension to the standard math library | * This class is an extension to the standard math library | ||||
result = Double.NaN; | result = Double.NaN; | ||||
} | } | ||||
else if (sign(n) == sign(d)) { | else if (sign(n) == sign(d)) { | ||||
double t = Math.abs(n / d); | |||||
t = t - (long) t; | |||||
result = sign(d) * Math.abs(t * d); | |||||
result = n % d; | |||||
} | } | ||||
else { | else { | ||||
double t = Math.abs(n / d); | |||||
t = t - (long) t; | |||||
t = Math.ceil(t) - t; | |||||
result = sign(d) * Math.abs(t * d); | |||||
result = ((n % d) + d) % d; | |||||
} | } | ||||
return result; | return result; | ||||
} | } | ||||
/** | /** | ||||
* inverse hyperbolic cosine | * inverse hyperbolic cosine | ||||
* @param d | * @param d |
} | } | ||||
public void testMod() { | public void testMod() { | ||||
//example from Excel help | |||||
assertEquals(1.0, MathX.mod(3, 2)); | |||||
assertEquals(1.0, MathX.mod(-3, 2)); | |||||
assertEquals(-1.0, MathX.mod(3, -2)); | |||||
assertEquals(-1.0, MathX.mod(-3, -2)); | |||||
assertEquals((double) 1.4, MathX.mod(3.4, 2)); | |||||
assertEquals((double) -1.4, MathX.mod(-3.4, -2)); | |||||
assertEquals((double) 0.6000000000000001, MathX.mod(-3.4, 2.0));// should actually be 0.6 | |||||
assertEquals((double) -0.6000000000000001, MathX.mod(3.4, -2.0));// should actually be -0.6 | |||||
// Bugzilla 50033 | |||||
assertEquals(1.0, MathX.mod(13, 12)); | |||||
} | } | ||||
public void testNChooseK() { | public void testNChooseK() { |