[Bug c++/48379] -Wdouble-promotion warns for promotion by varargs

[dcrocker at eschertech dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48379

David Crocker <dcrocker at eschertech dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |dcrocker at eschertech dot com

--- Comment #4 from David Crocker <dcrocker at eschertech dot com> ---
I too am getting fed up with having to add an explicit cast to double to
suppress the warning whenever I pass a float to a varargs function. I have
probably spent a few hours this year adding these casts. As has already been
said, nothing can he done about the promotion in this context, so it's not
worth warning about. Whereas in other situations, the warning is very useful to
me because I work with embedded processors that have single-precision but not
double-precision floating point hardware, so I want to avoid double precision
maths as far as possible.