Date: Friday, January 27, 2006 @ 13:22:12
Author: marc
Path: /cvsroot/carob/carob/src
Modified: ParameterStatement.cpp (1.10 -> 1.11)
Added floating-point FPoneShotFilter for float and double : now handling
+-infinity() CAROB-31
------------------------+
ParameterStatement.cpp | 42 +++++++++++++++++++++++++++++++++++++++++-
1 files changed, 41 insertions(+), 1 deletion(-)
Index: carob/src/ParameterStatement.cpp
diff -u carob/src/ParameterStatement.cpp:1.10
carob/src/ParameterStatement.cpp:1.11
--- carob/src/ParameterStatement.cpp:1.10 Fri Jan 27 12:48:24 2006
+++ carob/src/ParameterStatement.cpp Fri Jan 27 13:22:12 2006
@@ -223,6 +223,44 @@
};
};
+template<class FP>
+class FPoneShotFilter
+{
+ basic_ostream<wchar_t>& wrapped_stream;
+public:
+ FPoneShotFilter(basic_ostream<wchar_t>& s) : wrapped_stream(s) { } ;
+ basic_ostream<wchar_t>&
+ // this is the actual filtering operator
+ operator<< (FP value)
+ {
+ // too bad Standard C and Java could not agree on the same string :-(
+ if (value == std::numeric_limits<FP>::infinity())
+ wrapped_stream << L"Infinity"; // see java.lang.(Float|Double)#toString()
+ else if (value == -std::numeric_limits<FP>::infinity())
+ wrapped_stream << L"-Infinity";
+ // TODO: catch NaNs
+ else
+ wrapped_stream << value;
+ // then return the underlying stream (we filter only once!)
+ return wrapped_stream;
+ }
+};
+
+template<>
+class oneShotFilter<double, wchar_t> : public FPoneShotFilter<double>
+{
+public:
+ oneShotFilter(basic_ostream<wchar_t>& s) : FPoneShotFilter<double>(s) { } ;
+};
+
+template<>
+class oneShotFilter<float, wchar_t> : public FPoneShotFilter<float>
+{
+public:
+ oneShotFilter(basic_ostream<wchar_t>& s) : FPoneShotFilter<float>(s) { } ;
+};
+
+
} // namespace CarobNS
//// end of template filters ////
@@ -236,7 +274,9 @@
throw DriverException(L"Parameter index out of range.");
// As an optimization, we could make this stream a member.
- // That would just require a member lock for thread-safety
+ // That would require
+ // - a member lock for thread-safety
+ // - carefully checking that streamSettings<T1>() does not step on
streamSettings<T2>() toes
std::wostringstream buffer;
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