On 2017-05-12 15:59:44 -0500, Daniel Santos wrote:
> [...] But from a conceptual standpoint, I believe the term
> "constant-expression" would be incorrect because the C standard
> defines this constraint: (6.6.3 of C11) "Constant expressions shall
> not contain assignment, increment, decrement, fun
On 05/12/2017 10:49 AM, Martin Sebor wrote:
On 05/10/2017 04:14 PM, Daniel Santos wrote:
Well my primary goal is programming with values that are constant in the
compiler. There is no language in any C specification (that I'm aware
of) for a "compile-time constant", but the concept is very impo
On Fri, 12 May 2017, Daniel Santos wrote:
> > Note that while "other forms" might be accepted in initializers, they
> > would still not be integer constant expressions (see DR#312).
>
> What is DR#312?
http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_312.htm
(but cf the older
http://www.open
Sorry for my delayed response.
On 05/11/2017 09:35 AM, Joseph Myers wrote:
On Thu, 11 May 2017, Jonathan Wakely wrote:
On 10 May 2017 at 23:14, Daniel Santos wrote:
Well my primary goal is programming with values that are constant in the
compiler. There is no language in any C specification
On 05/10/2017 04:14 PM, Daniel Santos wrote:
On 05/10/2017 04:24 AM, Jonathan Wakely wrote:
Just because there's already one way to do something doesn't mean
better ways to do it are bad.
I'm only speaking out of jealousy being that most of my recent work has
been in C.
hadn't gone so far as
On Thu, 11 May 2017, Jonathan Wakely wrote:
> On 10 May 2017 at 23:14, Daniel Santos wrote:
> > Well my primary goal is programming with values that are constant in the
> > compiler. There is no language in any C specification (that I'm aware of)
> > for a "compile-time constant", but the concept
On Thu, May 11, 2017 at 11:12:24AM +0100, Jonathan Wakely wrote:
> On 10 May 2017 at 23:14, Daniel Santos wrote:
> > Well my primary goal is programming with values that are constant in the
> > compiler. There is no language in any C specification (that I'm aware of)
> > for a "compile-time consta
On 10 May 2017 at 23:14, Daniel Santos wrote:
> Well my primary goal is programming with values that are constant in the
> compiler. There is no language in any C specification (that I'm aware of)
> for a "compile-time constant", but the concept is very important. So just
> because some expressio
On 05/10/2017 04:24 AM, Jonathan Wakely wrote:
Just because there's already one way to do something doesn't mean
better ways to do it are bad.
I'm only speaking out of jealousy being that most of my recent work has
been in C.
hadn't gone so far as to investigate using this new attribute on
On 10 May 2017 at 10:17, Daniel Santos wrote:
> Maybe "constexpr" would be a better name, as it mirrors the C++11 keyword.
> When I first read about C++ getting constexpr, my first thought was, "Yeah,
> as if they needed yet another way to do metaprogramming!" :) However, I
Because writing functi
Thanks for your feedback!
On 05/09/2017 08:29 AM, Allan Sandfeld Jensen wrote:
On Tuesday 09 May 2017, Daniel Santos wrote:
The primary aim is to facilitate high-performance generic C
libraries for software where C++ is not suitable, but the cost of
run-time abstraction is unacceptable. A good
Thanks for your feedback!
On 05/09/2017 04:36 AM, Florian Weimer wrote:
On 05/09/2017 01:36 AM, Daniel Santos wrote:
To further the usefulness of such techniques, I propose the addition
of a c-family attribute to declare a parameter, variable (and
possibly other declarations) as "constprop" or
On Tuesday 09 May 2017, Daniel Santos wrote:
> The primary aim is to facilitate high-performance generic C
> libraries for software where C++ is not suitable, but the cost of
> run-time abstraction is unacceptable. A good example is the Linux
> kernel, where the source tree is littered with more th
On 05/09/2017 01:36 AM, Daniel Santos wrote:
To further the usefulness of such techniques, I propose the addition of
a c-family attribute to declare a parameter, variable (and possibly
other declarations) as "constprop" or some similar word. The purpose of
the attribute is to:
1.) Emit a warn
I would like to make some changes in GCC 8, so I thought that formal
proposal and RFC would be the best path. I'm still relatively new to the
GCC project.
I began experimenting with C metaprogramming techniques back in 2012, in
order to implement more efficient generic libraries in C
On Wed, Jun 20, 2012 at 8:21 AM, Daniel Santos wrote:
> Thanks for your response!
>
> On 06/19/2012 08:40 AM, Richard Guenther wrote:
>> On Tue, Jun 19, 2012 at 4:41 AM, Daniel Santos wrote:
>>> So before filing any feature request bugs, I figured I should bring my
>>> discussion here first, as I
Thanks for your response!
On 06/19/2012 08:40 AM, Richard Guenther wrote:
> On Tue, Jun 19, 2012 at 4:41 AM, Daniel Santos wrote:
>> So before filing any feature request bugs, I figured I should bring my
>> discussion here first, as I believe some enhancements to gcc can better
>> enable this typ
On Tue, Jun 19, 2012 at 4:41 AM, Daniel Santos wrote:
> Yes, my topic sounds crazy huh? But you guys made it possible when you
> started optimizing out constant function pointers. (Thank you!!) This
> didn't mature to "full power" until 4.6.? (works in 4.6.2, not sure
> about earlier 4.6). Now t
Thats very interesting, thanks for sharing.
mike
On Tue, Jun 19, 2012 at 4:41 AM, Daniel Santos wrote:
> Yes, my topic sounds crazy huh? But you guys made it possible when you
> started optimizing out constant function pointers. (Thank you!!) This
> didn't mature to "full power" until 4.6.? (wor
Yes, my topic sounds crazy huh? But you guys made it possible when you
started optimizing out constant function pointers. (Thank you!!) This
didn't mature to "full power" until 4.6.? (works in 4.6.2, not sure
about earlier 4.6). Now that you can populate a struct with const
pointers to inline fun
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