diff options
Diffstat (limited to 'lib/Support/APFloat.cpp')
-rw-r--r-- | lib/Support/APFloat.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp index ec50064f42..4179231f13 100644 --- a/lib/Support/APFloat.cpp +++ b/lib/Support/APFloat.cpp @@ -2575,11 +2575,40 @@ APFloat::convertFromDecimalString(StringRef str, roundingMode rounding_mode) return fs; } +bool +APFloat::convertFromStringSpecials(StringRef str) { + if (str.equals("inf") || str.equals("INFINITY")) { + makeInf(false); + return true; + } + + if (str.equals("-inf") || str.equals("-INFINITY")) { + makeInf(true); + return true; + } + + if (str.equals("nan") || str.equals("NaN")) { + makeNaN(false, false); + return true; + } + + if (str.equals("-nan") || str.equals("-NaN")) { + makeNaN(false, true); + return true; + } + + return false; +} + APFloat::opStatus APFloat::convertFromString(StringRef str, roundingMode rounding_mode) { assert(!str.empty() && "Invalid string length"); + // Handle special cases. + if (convertFromStringSpecials(str)) + return opOK; + /* Handle a leading minus sign. */ StringRef::iterator p = str.begin(); size_t slen = str.size(); |