Date: Friday, March 10, 2006 @ 14:48:27
Author: marc
Path: /cvsroot/carob/carob/src
Modified: ParameterStatement.cpp (1.25 -> 1.26)
Better explanation about the number of digits required for float serialization
to strings.
------------------------+
ParameterStatement.cpp | 6 +++++-
1 files changed, 5 insertions(+), 1 deletion(-)
Index: carob/src/ParameterStatement.cpp
diff -u carob/src/ParameterStatement.cpp:1.25
carob/src/ParameterStatement.cpp:1.26
--- carob/src/ParameterStatement.cpp:1.25 Mon Mar 6 13:43:23 2006
+++ carob/src/ParameterStatement.cpp Fri Mar 10 14:48:27 2006
@@ -230,11 +230,15 @@
// Partial specialization code shared by float & double
-// std::numeric_limits<...>::digits10 is not the precision we want, cause
+// std::numeric_limits<...>::digits10 is NOT the precision we want, cause
// digits10 is the maximum number of base10 digits that (float|double)
// can hold without loss, whereas we want the opposite: the minimum
// number of base10 digits required to describe any (float|double
// value) without loss.
+// Let's put it in another way: digits10 matters when you want to go
+// from base10 to floating-point and back to base10 without loss.
+// What we do here is to go from floating-point to base10 and back to
+// floating point.
// g++ 4.0.2 defines for instance:
// <float>::digits10 = 6 and <double>::digits10 = 15
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