[Rcpp-devel] short, unsigned short, long, unsigned long, long double
edd at debian.org
Tue Apr 6 15:32:25 CEST 2010
On 6 April 2010 at 14:27, Romain Francois wrote:
| > Perhaps I am not answering the question that you asked - that sort of
| > thing happens when answering email while still on the first cup of
| > coffee. More helpful might be the comments in the limits include file
| > for libstdc++ on Debian/Ubuntu
| > // The numeric_limits<> traits document implementation-defined aspects
| > // of fundamental arithmetic data types (integers and floating points).
| > // From Standard C++ point of view, there are 13 such types:
| > // * integers
| > // bool (1)
| > // char, signed char, unsigned char (3)
| > // short, unsigned short (2)
| > // int, unsigned (2)
| > // long, unsigned long (2)
| > //
| > // * floating points
| > // float (1)
| > // double (1)
| > // long double (1)
| > //
| > // GNU C++ understands (where supported by the host C-library)
| > // * integer
| > // long long, unsigned long long (2)
| > //
| > // which brings us to 15 fundamental arithmetic data types in GNU C++.
| > So it looks like short is part of standard C++ but not long long.
| Even better, thanks again.
Not to beat a dead horse (and yours, at that) but the long long and unsigned
long long are hence not portable but GNU g++ dependent.
| BTW, I am also a recurrent victim of the "before the first cup of
| coffee" pattern.
I am incoherent and incomprehensible most of the time irrespective of the
amount of coffee.
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