On Thu, 6 Jun 2024, Iris Simmons wrote:
Unless I'm misunderstanding, you're trying to pass a value by name to a
function. That is not a thing in C nor C++. However if you want to name the
arguments, you can do so with comments:
/* print = */ print
I would recommend against using comments in this fashion because while it
tells you what you meant to do, the compiler does not know it. If you made
an error the comment will make it harder to find.
If you happen to have a function with a lot of arguments of similar types
and putting arguments in order is a concern, you can instead convert them
to a struct and pass a struct instead:
typedef struct {
int a;
int b;
} INPUT_TYPE1
void myfunc(INPUT_TYPE1 x);
And somewhere:
{
INPUT_TYPE1 x;
x.a=3;
x.b=4;
myfunc(x);
}
I don't know whether the modern compilers are smart enough to optimize
this in the same way as passing an argument list. If this is a concern,
probably some code restructuring is a good idea.
best
Vladimir Dergachev
On Thu, Jun 6, 2024, 19:16 Søren Højsgaard via R-package-devel <
r-package-devel@r-project.org> wrote:
Dear all,
From CRAN maintainers I recieve:
Flavor: r-devel-linux-x86_64-debian-gcc
Check: whether package can be installed, Result: WARNING
Found the following significant warnings:
grips_fit_ips.cpp:149:45: warning: explicitly assigning value of
variable of type 'int' to itself [-Wself-assign]
grips_fit_ips.cpp:213:16: warning: explicitly assigning value of
variable of type 'int' to itself [-Wself-assign]
grips_fit_ips.cpp:254:10: warning: explicitly assigning value of
variable of type 'int' to itself [-Wself-assign]
grips_fit_ips.cpp:254:21: warning: explicitly assigning value of
variable of type 'double' to itself [-Wself-assign]
The first warning pertains to the line:
conips_inner_(S, K, elst0, clist0, print=print);
print on lhs of "=" is the formal name and print on rhs of "=" the name of
a variable. Does the compiler think I assign an integer
to itself? Like if I write
int a=7;
a=a;
Can anyone help me throw light on this?
Thanks in advance
Søren
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