On Tue, 9 Aug 2011, Rainer Orth wrote:
This patch is the last but one in the series to finally fix
PR libstdc++-v3/1773 __cplusplus defined to 1, should be 199711L
Only piece left before the switch :-)
* include/c_global/cmath (double abs(double)): Wrap in
!__CORRECT_ISO_CPP_MATH_H_PROTO1 &&
!__CORRECT_ISO_CPP_MATH_H_PROTO2.
(float abs(float), long double abs(long double): Wrap in
!__CORRECT_ISO_CPP_MATH_H_PROTO1.
(float acos(float), long double acos(long double)): Likewise.
[...]
I guess it would also be possible to reorder the declarations so as to
have a single #ifdef (well, two), but then the various overloads of each
function wouldn't be adjacent anymore.
* include/tr1/cmath (float fabs(float), long double fabs(long
double)): Wrap in !__CORRECT_ISO_CPP_MATH_H_PROTO1.
There is a comment:
// Note: we deal with fabs in a special way, because an using std::fabs
// would bring in also the overloads for complex types, which in C++0x
// mode have a different return type.
and then it proceeds to using ::fabs and declare the float and long double
overloads. Now on solaris, using ::fabs is going to be equivalent to using
std::fabs. I don't know if that creates problems for the complex types,
and in that case what can be done about it (declare fabs(double) instead
of importing the global one?).
--
Marc Glisse
