64-bit D and interfacing with C
Sean Kelly
sean at f4.ca
Sun Feb 18 11:13:35 PST 2007
David Friedman wrote:
> Many of the Phobos modules that interface C currently use 'int' and
> 'uint' when the actual C declaration is 'long' or 'unsigned long'. This
> works 32-bit sytems, but not for most 64-bit sytems.
>
> Should there be a standard definition for the C long and unsigned long
> types? My current solution is to add 'Clong_t' and 'Culong_t' to the
> std.stdint module:
>
> version(GNU)
> {
> import gcc.builtins;
> alias __builtin_Clong Clong_t;
> alias __builtin_Culong Culong_t;
> }
> else /* For DMD: */ version(X86_64)
> {
> // Needs more conditionals for LP64 vs. LLP64...
> alias long Clong_t;
> alias ulong Culong_t;
> }
> else
> {
> alias int Clong_t;
> alias uint Culong_t;
> }
For what it's worth, Tango has a module called tango.stdc.config which
defines the symbols c_long and c_ulong. stdint sounds like a good place
for these decls if an existing module is preferred.
Sean
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