diff options
Diffstat (limited to 'lib/Support/APFloat.cpp')
| -rw-r--r-- | lib/Support/APFloat.cpp | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp index c4c892f0352a..e1e2c22e1df1 100644 --- a/lib/Support/APFloat.cpp +++ b/lib/Support/APFloat.cpp @@ -3393,7 +3393,7 @@ namespace { } void IEEEFloat::toString(SmallVectorImpl<char> &Str, unsigned FormatPrecision, - unsigned FormatMaxPadding) const { + unsigned FormatMaxPadding, bool TruncateZero) const { switch (category) { case fcInfinity: if (isNegative()) @@ -3407,9 +3407,16 @@ void IEEEFloat::toString(SmallVectorImpl<char> &Str, unsigned FormatPrecision, if (isNegative()) Str.push_back('-'); - if (!FormatMaxPadding) - append(Str, "0.0E+0"); - else + if (!FormatMaxPadding) { + if (TruncateZero) + append(Str, "0.0E+0"); + else { + append(Str, "0.0"); + if (FormatPrecision > 1) + Str.append(FormatPrecision - 1, '0'); + append(Str, "e+00"); + } + } else Str.push_back('0'); return; @@ -3543,12 +3550,16 @@ void IEEEFloat::toString(SmallVectorImpl<char> &Str, unsigned FormatPrecision, Str.push_back(buffer[NDigits-1]); Str.push_back('.'); - if (NDigits == 1) + if (NDigits == 1 && TruncateZero) Str.push_back('0'); else for (unsigned I = 1; I != NDigits; ++I) Str.push_back(buffer[NDigits-1-I]); - Str.push_back('E'); + // Fill with zeros up to FormatPrecision. + if (!TruncateZero && FormatPrecision > NDigits - 1) + Str.append(FormatPrecision - NDigits + 1, '0'); + // For !TruncateZero we use lower 'e'. + Str.push_back(TruncateZero ? 'E' : 'e'); Str.push_back(exp >= 0 ? '+' : '-'); if (exp < 0) exp = -exp; @@ -3557,6 +3568,9 @@ void IEEEFloat::toString(SmallVectorImpl<char> &Str, unsigned FormatPrecision, expbuf.push_back((char) ('0' + (exp % 10))); exp /= 10; } while (exp); + // Exponent always at least two digits if we do not truncate zeros. + if (!TruncateZero && expbuf.size() < 2) + expbuf.push_back('0'); for (unsigned I = 0, E = expbuf.size(); I != E; ++I) Str.push_back(expbuf[E-1-I]); return; @@ -4362,10 +4376,11 @@ bool DoubleAPFloat::isInteger() const { void DoubleAPFloat::toString(SmallVectorImpl<char> &Str, unsigned FormatPrecision, - unsigned FormatMaxPadding) const { + unsigned FormatMaxPadding, + bool TruncateZero) const { assert(Semantics == &semPPCDoubleDouble && "Unexpected Semantics"); APFloat(semPPCDoubleDoubleLegacy, bitcastToAPInt()) - .toString(Str, FormatPrecision, FormatMaxPadding); + .toString(Str, FormatPrecision, FormatMaxPadding, TruncateZero); } bool DoubleAPFloat::getExactInverse(APFloat *inv) const { |