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Teach APFloat how to create both QNaNs and SNaNs and with arbitrary-width

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payloads.  APFloat's internal folding routines always make QNaNs now,
instead of sometimes making QNaNs and sometimes SNaNs depending on the
type.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97364 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John McCall
2010-02-28 02:51:25 +00:00
parent 6281cda673
commit e12b73816b
6 changed files with 107 additions and 17 deletions
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lib/Support/APInt.cpp
+9 -1
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@@ -2344,13 +2344,21 @@ APInt::tcExtractBit(const integerPart *parts, unsigned int bit)
& ((integerPart) 1 << bit % integerPartWidth)) != 0;
}
/* Set the given bit of a bignum. */
/* Set the given bit of a bignum. */
void
APInt::tcSetBit(integerPart *parts, unsigned int bit)
{
parts[bit / integerPartWidth] |= (integerPart) 1 << (bit % integerPartWidth);
}
/* Clears the given bit of a bignum. */
void
APInt::tcClearBit(integerPart *parts, unsigned int bit)
{
parts[bit / integerPartWidth] &=
~((integerPart) 1 << (bit % integerPartWidth));
}
/* Returns the bit number of the least significant set bit of a
number. If the input number has no bits set -1U is returned. */
unsigned int