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8262744: Formatter '%g' conversion uses wrong format for BigDecimal rounding up to limits

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Reviewed-by: rriggs, bpb
This commit is contained in:
Ian Graves 2021-04-16 20:05:48 +00:00 • committed by Roger Riggs
parent 4413dbfbdb
commit 0bdc3e7a41
2 changed files with 65 additions and 4 deletions
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7
src/java.base/share/classes/java/util/Formatter.java
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@ -3821,11 +3821,10 @@ public final class Formatter implements Closeable, Flushable {
else if (precision == 0)
prec = 1;
BigDecimal tenToTheNegFour = BigDecimal.valueOf(1, 4);
BigDecimal tenToThePrec = BigDecimal.valueOf(1, -prec);
value = value.round(new MathContext(prec));
if ((value.equals(BigDecimal.ZERO))
|| ((value.compareTo(tenToTheNegFour) != -1)
&& (value.compareTo(tenToThePrec) == -1))) {
|| ((value.compareTo(BigDecimal.valueOf(1, 4)) != -1)
&& (value.compareTo(BigDecimal.valueOf(1, -prec)) == -1))) {
int e = - value.scale()
+ (value.unscaledValue().toString().length() - 1);