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Fix and clarify some comments.

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llvm-svn: 42670
This commit is contained in:
Neil Booth 2007-10-06 00:43:45 +00:00
parent 2c4419d71b
commit 0613ec4ee6
1 changed files with 12 additions and 12 deletions
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24
lib/Support/APInt.cpp
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@ -2029,22 +2029,22 @@ namespace {
return ~(integerPart) 0 >> (integerPartWidth - bits);
}
/* Returns the value of the lower nibble of PART. */
/* Returns the value of the lower half of PART. */
inline integerPart
lowHalf(integerPart part)
{
return part & lowBitMask(integerPartWidth / 2);
}
/* Returns the value of the upper nibble of PART. */
/* Returns the value of the upper half of PART. */
inline integerPart
highHalf(integerPart part)
{
return part >> (integerPartWidth / 2);
}
/* Returns the bit number of the most significant bit of a part. If
the input number has no bits set -1U is returned. */
/* Returns the bit number of the most significant set bit of a part.
If the input number has no bits set -1U is returned. */
unsigned int
partMSB(integerPart value)
{
@ -2068,8 +2068,8 @@ namespace {
return msb;
}
/* Returns the bit number of the least significant bit of a part.
If the input number has no bits set -1U is returned. */
/* Returns the bit number of the least significant set bit of a
part. If the input number has no bits set -1U is returned. */
unsigned int
partLSB(integerPart value)
{
@ -2144,8 +2144,8 @@ APInt::tcSetBit(integerPart *parts, unsigned int bit)
parts[bit / integerPartWidth] |= (integerPart) 1 << (bit % integerPartWidth);
}
/* Returns the bit number of the least significant bit of a number.
If the input number has no bits set -1U is returned. */
/* 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
APInt::tcLSB(const integerPart *parts, unsigned int n)
{
@ -2162,8 +2162,8 @@ APInt::tcLSB(const integerPart *parts, unsigned int n)
return -1U;
}
/* Returns the bit number of the most significant bit of a number. If
the input number has no bits set -1U is returned. */
/* Returns the bit number of the most significant set bit of a number.
If the input number has no bits set -1U is returned. */
unsigned int
APInt::tcMSB(const integerPart *parts, unsigned int n)
{
@ -2240,8 +2240,8 @@ APInt::tcNegate(integerPart *dst, unsigned int parts)
tcIncrement(dst, parts);
}
/* DST += SRC * MULTIPLIER + PART if add is true
DST = SRC * MULTIPLIER + PART if add is false
/* DST += SRC * MULTIPLIER + CARRY if add is true
DST = SRC * MULTIPLIER + CARRY if add is false
Requires 0 <= DSTPARTS <= SRCPARTS + 1. If DST overlaps SRC
they must start at the same point, i.e. DST == SRC.