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rework 32bit version to match 64bit version

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This commit is contained in:
Mathieu Lacage
2010-07-08 09:33:06 +02:00
parent 50a560f7e3
commit 57b7572e75
1 changed files with 8 additions and 15 deletions
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23
src/simulator/high-precision-cairo.cc
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@@ -30,30 +30,23 @@ namespace ns3 {
NS_LOG_COMPONENT_DEFINE ("HighPrecisionCairo");
#define ABS_ARGS(sa,sb,ua,ub) \
bool negResult, negA, negB; \
/* take the sign of the operands */ \
#define OUTPUT_SIGN(sa,sb,ua,ub) \
({bool negA, negB; \
negA = _cairo_int128_negative (sa); \
negB = _cairo_int128_negative (sb); \
/* the result is negative only if one of the operand is negative */ \
negResult = (negA && !negB) || (!negA && negB); \
/* now take the absolute part to make sure that the resulting operands are positive */ \
ua = _cairo_int128_to_uint128 (sa); \
ub = _cairo_int128_to_uint128 (sb); \
ua = negA ? _cairo_uint128_negate (ua) : ua; \
ub = negB ? _cairo_uint128_negate (ub) : ub
#define SIGN_RESULT(result) \
negResult ? _cairo_uint128_negate (result) : result
ub = negB ? _cairo_uint128_negate (ub) : ub; \
negResult = (negA && !negB) || (!negA && negB);})
void
HighPrecision::Mul (HighPrecision const &o)
{
cairo_uint128_t a, b, result;
ABS_ARGS (m_value, o.m_value, a, b);
bool sign = OUTPUT_SIGN (m_value, o.m_value, a, b);
result = Umul (a, b);
m_value = SIGN_RESULT (result);
m_value = sign ? _cairo_uint128_negate (result) : result;
}
@@ -93,9 +86,9 @@ void
HighPrecision::Div (HighPrecision const &o)
{
cairo_uint128_t a, b, result;
ABS_ARGS(m_value, o.m_value, a, b);
bool sign = OUTPUT_SIGN (m_value, o.m_value, a, b);
result = Udiv (a, b);
m_value = SIGN_RESULT (result);
m_value = sign ? _cairo_uint128_negate (result) : result;
}
cairo_uint128_t