IntenseFinance/gnucash
3
0
Fork 0
mirror of https://github.com/Gnucash/gnucash.git synced 2025-02-25 18:55:30 -06:00
Code Issues Packages Projects Releases Wiki Activity

Fix GncInt128 shift operators when shift amount will clear a leg.

Browse Source
This commit is contained in:
John Ralls 2017-01-30 12:59:45 -08:00
parent 4a134ae0b1
commit 570c8a8d60
1 changed files with 20 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/libqof/qof/gnc-int128.cpp
View File

@ -309,10 +309,16 @@ GncInt128::operator<<= (unsigned int i) noexcept
m_lo = 0; m_lo = 0;
return *this; return *this;
} }
uint64_t carry {(m_lo & (((UINT64_C(1) << i) - 1) << (legbits - i)))}; if (i < legbits)
m_lo <<= i; {
m_hi <<= i; uint64_t carry {(m_lo & (((UINT64_C(1) << i) - 1) << (legbits - i)))};
m_hi += carry; m_lo <<= i;
m_hi <<= i;
m_hi += carry;
return *this;
}
m_hi = m_lo << (i - legbits);
m_lo = 0;
return *this; return *this;
} }
@ -326,10 +332,16 @@ GncInt128::operator>>= (unsigned int i) noexcept
m_lo = 0; m_lo = 0;
return *this; return *this;
} }
uint64_t carry {(m_hi & ((UINT64_C(1) << i) - 1))}; if (i < legbits)
m_lo >>= i; {
m_hi >>= i; uint64_t carry {(m_hi & ((UINT64_C(1) << i) - 1))};
m_lo += (carry << (legbits - i)); m_lo >>= i;
m_hi >>= i;
m_lo += (carry << (legbits - i));
return *this;
}
m_lo = m_hi >> (i - legbits);
m_hi = 0;
return *this; return *this;
} }