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Posted to commits@commons.apache.org by se...@apache.org on 2011/01/22 21:26:34 UTC
svn commit: r1062258 -
/commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java
Author: sebb
Date: Sat Jan 22 20:26:34 2011
New Revision: 1062258
URL: http://svn.apache.org/viewvc?rev=1062258&view=rev
Log:
Simplify code by using doubleHighPart
Modified:
commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java
Modified: commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java
URL: http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java?rev=1062258&r1=1062257&r2=1062258&view=diff
==============================================================================
--- commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java (original)
+++ commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java Sat Jan 22 20:26:34 2011
@@ -3205,13 +3205,7 @@ public class FastMath {
return Math.PI/2; // so return the appropriate value
}
- if (abs(r) < Double.MAX_VALUE/HEX_40000000){ // is it safe to split r ?
- temp = r * HEX_40000000;
- } else {
- temp = 0.0;
- }
-
- double ra = r + temp - temp;
+ double ra = doubleHighPart(r);
double rb = r - ra;
rb += (y - ra*xa - ra*xb - rb*xa - rb*xb) / x; // Correct for rounding in division
@@ -3323,11 +3317,7 @@ public class FastMath {
final double facta = 0.01745329052209854;
final double factb = 1.997844754509471E-9;
- double temp = 0;
- if (abs(x) < Double.MAX_VALUE/HEX_40000000) { // prevent overflow to infinity
- temp = x * HEX_40000000;
- }
- double xa = x + temp - temp;
+ double xa = doubleHighPart(x);
double xb = x - xa;
double result = xb * factb + xb * facta + xa * factb + xa * facta;
@@ -3352,11 +3342,7 @@ public class FastMath {
final double facta = 57.2957763671875;
final double factb = 3.145894820876798E-6;
- double temp = 0;
- if (abs(x) < Double.MAX_VALUE/HEX_40000000) { // prevent overflow to infinity
- temp = x * HEX_40000000;
- }
- double xa = x + temp - temp;
+ double xa = doubleHighPart(x);
double xb = x - xa;
return xb * factb + xb * facta + xa * factb + xa * facta;