Generalize tcFullMultiply so that the operands can be of differing
part widths. Also, return the number of parts actually required to
hold the result's value.
Remove an over-cautious condition from rounding of float->hex conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42669 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index 3746ae8..34784a0 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -519,7 +519,7 @@
partsCount = partCount();
APInt::tcFullMultiply(fullSignificand, lhsSignificand,
- rhs.significandParts(), partsCount);
+ rhs.significandParts(), partsCount, partsCount);
lost_fraction = lfExactlyZero;
omsb = APInt::tcMSB(fullSignificand, newPartsCount) + 1;
@@ -1795,7 +1795,7 @@
/* hexDigits of zero means use the required number for the
precision. Otherwise, see if we are truncating. If we are,
- found out if we need to round away from zero. */
+ find out if we need to round away from zero. */
if (hexDigits) {
if (hexDigits < outputDigits) {
/* We are dropping non-zero bits, so need to check how to round.
@@ -1845,7 +1845,8 @@
do {
q--;
*q = hexDigitChars[hexDigitValue (*q) + 1];
- } while (*q == '0' && q > p);
+ } while (*q == '0');
+ assert (q >= p);
} else {
/* Add trailing zeroes. */
memset (dst, '0', outputDigits);