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Remove more unused code paths in double conversions

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miloyip 2015-04-15 11:52:24 +08:00
parent 402d75a801
commit 2689cc4974
2 changed files with 4 additions and 17 deletions
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7
include/rapidjson/internal/biginteger.h
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@ -172,13 +172,10 @@ public:
}
// Compute absolute difference of this and rhs.
// Return false if this < rhs
// Assume this != rhs
bool Difference(const BigInteger& rhs, BigInteger* out) const {
int cmp = Compare(rhs);
if (cmp == 0) {
*out = BigInteger(0);
return false;
}
RAPIDJSON_ASSERT(cmp != 0);
const BigInteger *a, *b; // Makes a > b
bool ret;
if (cmp < 0) { a = &rhs; b = this; ret = true; }

14
include/rapidjson/internal/strtod.h
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@ -104,19 +104,9 @@ inline int CheckWithinHalfULP(double b, const BigInteger& d, int dExp) {
hS.MultiplyPow5(hS_Exp5) <<= hS_Exp2;
BigInteger delta(0);
bool adjustToNegative = dS.Difference(bS, &delta);
dS.Difference(bS, &delta);
int cmp = delta.Compare(hS);
// If delta is within 1/2 ULP, check for special case when significand is power of two.
// In this case, need to compare with 1/2h in the lower bound.
if (cmp < 0 && adjustToNegative && // within and dS < bS
db.IsNormal() && (bInt & (bInt - 1)) == 0 && // Power of 2
db.Uint64Value() != RAPIDJSON_UINT64_C2(0x00100000, 0x00000000)) // minimum normal number must not do this
{
delta <<= 1;
return delta.Compare(hS);
}
return cmp;
return delta.Compare(hS);
}
inline bool StrtodFast(double d, int p, double* result) {