• =?iso-8859-1?Q?Robert_M._M=FCnch?= (6/6) Apr 06 2019 I have a C interface that uses a parameter of type intptr_t. Wondering
• Alex (4/6) Apr 06 2019 I suppose, ptrdiff_t is.
• Paul Backus (2/4) Apr 06 2019 The correct equivalent is `intptr_t` from `core.stdc.stdint`.
• =?iso-8859-1?Q?Robert_M._M=FCnch?= (6/11) Apr 07 2019 Ha, thanks... RTFM. Will do in the future.
• bauss (2/7) Apr 07 2019 Which is just an alias for ptrdiff_t.
• Paul Backus (4/12) Apr 07 2019 Unless this is guaranteed to be the case on every platform
• bauss (6/19) Apr 07 2019 It should be guaranteed since it's just supposed to be a signed

=?iso-8859-1?Q?Robert_M._M=FCnch?= <robert.muench saphirion.com> writes:

I have a C interface that uses a parameter of type intptr_t. Wondering 
if size_t is the correct D equivalent?

-- 
Robert M. Münch
http://www.saphirion.com
smarter | better | faster

Alex <sascha.orlov gmail.com> writes:

On Saturday, 6 April 2019 at 19:31:15 UTC, Robert M. Münch wrote:
 I have a C interface that uses a parameter of type intptr_t. 
 Wondering if size_t is the correct D equivalent?

I suppose, ptrdiff_t is.

https://dlang.org/spec/type.html#ptrdiff_t
https://dlang.org/spec/portability.html#32_to_64bit

Paul Backus <snarwin gmail.com> writes:

On Saturday, 6 April 2019 at 19:31:15 UTC, Robert M. Münch wrote:
 I have a C interface that uses a parameter of type intptr_t. 
 Wondering if size_t is the correct D equivalent?

The correct equivalent is `intptr_t` from `core.stdc.stdint`.

=?iso-8859-1?Q?Robert_M._M=FCnch?= <robert.muench saphirion.com> writes:

On 2019-04-06 20:16:06 +0000, Paul Backus said:

 On Saturday, 6 April 2019 at 19:31:15 UTC, Robert M. Münch wrote:
 I have a C interface that uses a parameter of type intptr_t. Wondering 
 if size_t is the correct D equivalent?

 
 The correct equivalent is `intptr_t` from `core.stdc.stdint`.

Ha, thanks... RTFM. Will do in the future.

-- 
Robert M. Münch
http://www.saphirion.com
smarter | better | faster

bauss <jj_1337 live.dk> writes:

On Saturday, 6 April 2019 at 20:16:06 UTC, Paul Backus wrote:
 On Saturday, 6 April 2019 at 19:31:15 UTC, Robert M. Münch 
 wrote:
 I have a C interface that uses a parameter of type intptr_t. 
 Wondering if size_t is the correct D equivalent?

 The correct equivalent is `intptr_t` from `core.stdc.stdint`.

Which is just an alias for ptrdiff_t.

Paul Backus <snarwin gmail.com> writes:

On Sunday, 7 April 2019 at 12:19:10 UTC, bauss wrote:
 On Saturday, 6 April 2019 at 20:16:06 UTC, Paul Backus wrote:
 On Saturday, 6 April 2019 at 19:31:15 UTC, Robert M. Münch 
 wrote:
 I have a C interface that uses a parameter of type intptr_t. 
 Wondering if size_t is the correct D equivalent?

 The correct equivalent is `intptr_t` from `core.stdc.stdint`.

 Which is just an alias for ptrdiff_t.

Unless this is guaranteed to be the case on every platform 
druntime is ever ported to, it is technically better to use the 
`intptr_t` alias.

bauss <jj_1337 live.dk> writes:

On Sunday, 7 April 2019 at 13:45:15 UTC, Paul Backus wrote:
 On Sunday, 7 April 2019 at 12:19:10 UTC, bauss wrote:
 On Saturday, 6 April 2019 at 20:16:06 UTC, Paul Backus wrote:
 On Saturday, 6 April 2019 at 19:31:15 UTC, Robert M. Münch 
 wrote:
 I have a C interface that uses a parameter of type intptr_t. 
 Wondering if size_t is the correct D equivalent?

 The correct equivalent is `intptr_t` from `core.stdc.stdint`.

 Which is just an alias for ptrdiff_t.

 Unless this is guaranteed to be the case on every platform 
 druntime is ever ported to, it is technically better to use the 
 `intptr_t` alias.

It should be guaranteed since it's just supposed to be a signed 
integer of either 32 bit or 64 bit depending on the architecture 
you're on.

D isn't supported below 32 bit systems so it's irrelevant there 
and thus it can be a guarantee.