diff options
Diffstat (limited to 'llvm/lib/Support/APFloat.cpp')
| -rw-r--r-- | llvm/lib/Support/APFloat.cpp | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp index 64a7e0c..2a9b390 100644 --- a/llvm/lib/Support/APFloat.cpp +++ b/llvm/lib/Support/APFloat.cpp @@ -732,7 +732,7 @@ powerOf5(APFloatBase::integerPart *dst, unsigned int power) { APFloatBase::integerPart pow5s[maxPowerOfFiveParts * 2 + 5]; pow5s[0] = 78125 * 5; - unsigned int partsCount[16] = { 1 }; + unsigned int partsCount = 1; APFloatBase::integerPart scratch[maxPowerOfFiveParts], *p1, *p2, *pow5; unsigned int result; assert(power <= maxExponent); @@ -747,25 +747,20 @@ powerOf5(APFloatBase::integerPart *dst, unsigned int power) { pow5 = pow5s; for (unsigned int n = 0; power; power >>= 1, n++) { - unsigned int pc; - - pc = partsCount[n]; - /* Calculate pow(5,pow(2,n+3)) if we haven't yet. */ - if (pc == 0) { - pc = partsCount[n - 1]; - APInt::tcFullMultiply(pow5, pow5 - pc, pow5 - pc, pc, pc); - pc *= 2; - if (pow5[pc - 1] == 0) - pc--; - partsCount[n] = pc; + if (n != 0) { + APInt::tcFullMultiply(pow5, pow5 - partsCount, pow5 - partsCount, + partsCount, partsCount); + partsCount *= 2; + if (pow5[partsCount - 1] == 0) + partsCount--; } if (power & 1) { APFloatBase::integerPart *tmp; - APInt::tcFullMultiply(p2, p1, pow5, result, pc); - result += pc; + APInt::tcFullMultiply(p2, p1, pow5, result, partsCount); + result += partsCount; if (p2[result - 1] == 0) result--; @@ -776,7 +771,7 @@ powerOf5(APFloatBase::integerPart *dst, unsigned int power) { p2 = tmp; } - pow5 += pc; + pow5 += partsCount; } if (p1 != dst) |