Re: Unexpected frexpf implementation used by MSVC9 in C++ mode

[Bruno Haible]

Michael Goffioul wrote:
> frexpf is actually defined as a macro in C,
> and as an inline function in C++.

Normally gnulib avoids collisions with system functions by checking whether
a system function exists, via AC_CHECK_FUNCS. But AC_CHECK_FUNCS looks
only in the libraries and misses the inline functions...

Would it help to set REPLACE_FREXPF to 1? To test this, simply change your
copy of math.in.h, replacing

   # if @REPLACE_FREXPF@

with a)

   # if @REPLACE_FREXPF@ || defined _MSC_VER

or b)

   # if @REPLACE_FREXPF@ || (defined _MSC_VER && defined __cplusplus)

Does one or the other produce better results?

Bruno