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8278831: Use table lookup for the last two bytes in Integer.getChars

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Reviewed-by: jlaskey, rriggs
This commit is contained in:
Claes Redestad 2022-01-17 11:01:55 +00:00
parent 431bd9a66d
commit 71ca85f5a6
4 changed files with 26 additions and 31 deletions
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20
src/java.base/share/classes/java/lang/StringUTF16.java
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@ -1549,13 +1549,9 @@ final class StringUTF16 {
}
// We know there are at most two digits left at this point.
q = i / 10;
r = (q * 10) - i;
putChar(buf, --charPos, '0' + r);
// Whatever left is the remaining digit.
if (q < 0) {
putChar(buf, --charPos, '0' - q);
putChar(buf, --charPos, Integer.DigitOnes[-i]);
if (i < -9) {
putChar(buf, --charPos, Integer.DigitTens[-i]);
}
if (negative) {
@ -1604,13 +1600,9 @@ final class StringUTF16 {
}
// We know there are at most two digits left at this point.
q2 = i2 / 10;
r = (q2 * 10) - i2;
putChar(buf, --charPos, '0' + r);
// Whatever left is the remaining digit.
if (q2 < 0) {
putChar(buf, --charPos, '0' - q2);
putChar(buf, --charPos, Integer.DigitOnes[-i2]);
if (i2 < -9) {
putChar(buf, --charPos, Integer.DigitTens[-i2]);
}
if (negative) {