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MATH-486 FastMath toRadian and toDegree don't handle large double numbers well

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git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1060967 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastian Bazley 2011-01-19 20:26:55 +00:00
parent 0900d78b9a
commit c1d889840c
1 changed files with 8 additions and 2 deletions
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src/main/java/org/apache/commons/math/util/FastMath.java
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@ -3239,7 +3239,10 @@ public class FastMath {
final double facta = 0.01745329052209854; final double facta = 0.01745329052209854;
final double factb = 1.997844754509471E-9; final double factb = 1.997844754509471E-9;
double temp = x * 1073741824.0; double temp = 0;
if (abs(x) < Double.MAX_VALUE/1073741824.0) { // prevent overflow to infinity
temp = x * 1073741824.0;
}
double xa = x + temp - temp; double xa = x + temp - temp;
double xb = x - xa; double xb = x - xa;
@ -3264,7 +3267,10 @@ public class FastMath {
final double facta = 57.2957763671875; final double facta = 57.2957763671875;
final double factb = 3.145894820876798E-6; final double factb = 3.145894820876798E-6;
double temp = x * 1073741824.0; double temp = 0;
if (abs(x) < Double.MAX_VALUE/1073741824.0) { // prevent overflow to infinity
temp = x * 1073741824.0;
}
double xa = x + temp - temp; double xa = x + temp - temp;
double xb = x - xa; double xb = x - xa;