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8313875: Use literals instead of static fields in java.util.Math: twoToTheDoubleScaleUp, twoToTheDoubleScaleDown

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Reviewed-by: redestad, darcy, bpb, rgiulietti
This commit is contained in:
Andrey Turbanov 2023-08-08 11:38:15 +00:00
parent 091e65e95b
commit 41bdcded65
1 changed files with 2 additions and 6 deletions
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8
src/java.base/share/classes/java/lang/Math.java
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@ -3346,12 +3346,12 @@ public final class Math {
if(scaleFactor < 0) { if(scaleFactor < 0) {
scaleFactor = Math.max(scaleFactor, -MAX_SCALE); scaleFactor = Math.max(scaleFactor, -MAX_SCALE);
scale_increment = -512; scale_increment = -512;
exp_delta = twoToTheDoubleScaleDown; exp_delta = 0x1p-512;
} }
else { else {
scaleFactor = Math.min(scaleFactor, MAX_SCALE); scaleFactor = Math.min(scaleFactor, MAX_SCALE);
scale_increment = 512; scale_increment = 512;
exp_delta = twoToTheDoubleScaleUp; exp_delta = 0x1p512;
} }
// Calculate (scaleFactor % +/-512), 512 = 2^9, using // Calculate (scaleFactor % +/-512), 512 = 2^9, using
@ -3420,10 +3420,6 @@ public final class Math {
return (float)((double)f*powerOfTwoD(scaleFactor)); return (float)((double)f*powerOfTwoD(scaleFactor));
} }
// Constants used in scalb
static double twoToTheDoubleScaleUp = powerOfTwoD(512);
static double twoToTheDoubleScaleDown = powerOfTwoD(-512);
/** /**
* Returns a floating-point power of two in the normal range. * Returns a floating-point power of two in the normal range.
*/ */