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Also take the unsigned -> signed conversion into account.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41846 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz 2011-05-30 22:31:59 +00:00
parent 2925a66e80
commit 6d551ee44f
1 changed files with 8 additions and 3 deletions
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11
src/add-ons/kernel/drivers/input/usb_hid/HIDReportItem.cpp
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@ -118,9 +118,14 @@ HIDReportItem::SetData(uint32 data)
uint32 uint32
HIDReportItem::ScaledData(uint8 scaleToBits, bool toBeSigned) HIDReportItem::ScaledData(uint8 scaleToBits, bool toBeSigned)
{ {
uint32 source = fData; uint32 source;
if (Signed() && !toBeSigned) if (Signed() != toBeSigned) {
source = (uint32)((int32)fData - (int32)fMinimum); if (toBeSigned)
source = (uint32)((int32)fData - (fMaximum + 1) / 2) & fMask;
else
source = (uint32)((int32)fData - (int32)fMinimum);
} else
source = fData;
if (fBitCount == scaleToBits) if (fBitCount == scaleToBits)
return source; return source;