[cstdint, cinttypes.syn] Reorganize <cstdint> presentation #843

tkoeppe · 2016-07-21T15:01:12Z

Demote heading "18.4.1 Header <cstdint> synopsis" to \synopsis.
Show MIN/MAX macros in synopsis.
Remove stray namespace comment.
Add See Also for the relevant C clause.
Add cross reference from <cinttypes> synopsis.

zygoloid · 2016-07-21T18:27:36Z

source/support.tex

+#define UINT@\placeholdernc{N}@_C(value) @\seebelow@
+
+#define INTMAX_C(value) @\seebelow@
+#define UINTMAX_C(value) @\seebelow@
 \end{codeblock}

 \pnum
 The header defines all types and macros the same as


I think this has changed the meaning, but I'm not sure whether the old or new wording matches the intent. We used to definitively say that the C++ header definitely defines these macros for N in 8, 16, 32, 64, and in no other cases. C says something quite different -- those macros are defined if there happen to be types of those widths, and other macros can also be defined if there are types of other widths.

Does C++ not actually allow other values of N at all?

@zygoloid: updated version pushed that lists the four sizes that we support explicitly.

@zygoloid: Ping

zygoloid · 2016-08-10T21:32:14Z

source/support.tex


-\pnum
-The header also defines numerous macros of the form:
+#define INT[8, 16, 32, 64]_MIN @\seebelow@         // optional


These did not appear to be optional before.

I do not think we can fix this editorially; we need to ask LWG what they meant.

These macros are supposed to expand to expressions of their corresponding type. Since the corresponding type is optional, surely the macro must also be optional?

But indeed the LEAST/FAST macros should absolutely not be optional, that's a mistake that I will fix at once.

I will open an LWG issue to have the question settled of whether the macros are optional.

tkoeppe · 2016-11-18T20:31:31Z

Pending resolution of LWG 2764 and LWG 2820.

jensmaurer · 2016-12-14T13:47:37Z

source/iostreams.tex

@@ -14984,7 +14984,7 @@
 \indexlibrary{\idxcode{SCNuPTR}}%
 \indexlibrary{\idxcode{SCNxPTR}}%
 \begin{codeblock}
-#include <cstdint>
+#include <cstdint> // see \ref{cstdint}



Is that comment aligned to one of your preferred columns?

Let me check. Preferred columns are 20, 32, 48, 24.

jensmaurer · 2016-12-14T13:48:44Z

source/support.tex

@@ -1306,7 +1306,7 @@

 \rSec1[cstdint]{Integer types}

-\rSec2[cstdint.syn]{Header \tcode{<cstdint>} synopsis}
+\synopsis{Header \tcode{<cstdint>} synopsis}
 \indextext{\idxhdr{cstdint}}%


\synopsis is gone; see #566 and #1231.

OK, I'll rebase this.

Rebased, not sure how to avoid the pointless substructure.

jensmaurer · 2016-12-14T13:53:17Z

source/support.tex

 \end{codeblock}

 \pnum
 The header defines all types and macros the same as
 the C standard library header \tcode{<stdint.h>}.

+\xref ISO C~7.20.
+
 \rSec1[support.start.term]{Start and termination}


This seems a good addition that can go in ahead of time.

Done in edd2c5f.

jensmaurer · 2016-12-15T14:25:13Z

source/support.tex

+  using int8_t         = @\textit{signed integer type}@;    // optional
+  using int16_t        = @\textit{signed integer type}@;    // optional
+  using int32_t        = @\textit{signed integer type}@;    // optional
+  using int64_t        = @\textit{signed integer type}@;    // optional



Could you please put in the whitespace fixes right away? This makes the "hard" parts easier to spot.

Sure, will do.

Reverting those changes for now, since they don't take italic correction into account, either. Once we have direction, I'll separate cosmetic and substantive change.

cubbimew · 2016-12-21T20:10:00Z

source/support.tex


-plus function macros of the form:
+#define INT_FAST[8, 16, 32, 64]_MIN @\seebelow@


This seems worse: the never-defined pattern-matching language of "INT_[FAST LEAST]{8 16 32 64}_MIN" is both changed and used in what would otherwise be a preprocessor directive (rather than prose).

tkoeppe · 2018-04-02T01:02:13Z

I think this is pending some LWG issue (LWG 2820). I'll check with @mclow where we are on this.

jensmaurer · 2018-09-15T10:38:06Z

@tkoeppe, ping. It seems LWG 2820 is ready for a -lib vote and will make some of the changes in this pull request moot. I'd suggest you ask @mclow.

tkoeppe · 2019-03-15T21:31:40Z

Any day now, seriously.

tkoeppe · 2020-12-14T13:24:00Z

@mclow, @jensmaurer: This has been resolved by LWG2820 via 2020-11 Motion LWG-3. Thank you all for your continued support!

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jensmaurer mentioned this pull request Dec 20, 2016

[cstdint.syn] should list the macros it defines #1276

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[cstdint, cinttypes.syn] Reorganize <cstdint> presentation

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[cstdint, cinttypes.syn] Reorganize <cstdint> presentation #843

[cstdint, cinttypes.syn] Reorganize <cstdint> presentation #843

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		plus function macros of the form:
		#define INT_FAST[8, 16, 32, 64]_MIN @\seebelow@

[cstdint, cinttypes.syn] Reorganize <cstdint> presentation #843

[cstdint, cinttypes.syn] Reorganize <cstdint> presentation #843

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