[Bug c++/49813] [C++0x] sinh vs asinh vs constexpr

["vincenzo.innocente at cern dot ch" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49813

--- Comment #8 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 2011-07-22 11:06:41 UTC ---
what about other "new C99 functions" such as
cexprMath.cpp:16:64: error: 'float std::nextafter(float, float)' is not
'constexpr'
cexprMath.cpp:17:58: error: 'float std::trunc(float)' is not 'constexpr'
cexprMath.cpp:18:48: error: 'float std::lgamma(float)' is not 'constexpr'
cexprMath.cpp:19:46: error: 'float std::erfc(float)' is not 'constexpr'
?
have not tested all (yet).

from
#include <cmath>

struct foo {
  static constexpr float a = std::cos(3.);
  static constexpr float c = std::exp(3.);
  static constexpr float d = std::log(3.);
  static constexpr float e1 = std::asin(1.);
  static constexpr float h = std::sqrt(.1);
  static constexpr float p = std::pow(1.3,-0.75);
  static constexpr float es = std::sinh(1.);
  static constexpr float ec = std::cosh(1.);
  static constexpr float et = std::tanh(1.);
  static constexpr float zs = std::asinh(1.2);
  static constexpr float zc = std::acosh(1.2);
  static constexpr float zt = std::atanh(.5);
  static constexpr float pi1 =std::nextafter(std::cos(-1.f),0.f);
  static constexpr float three =std::trunc(std::cos(-1.f));
  static constexpr float l0 = std::lgamma(0.45f);
  static constexpr float er = std::erfc(0.45f);

};



as we are on the subject:
if the argument of the function is invalid such as

  static constexpr float nan1 = std::asin(1.45f);
  static constexpr float nan2 = std::sqrt(-1.45f);
I get exactly the same error as above which is a bit confusing

cexprMath.cpp:20:48: error: call to non-constexpr function 'float
std::asin(float)'
cexprMath.cpp:20:48: error: field initializer is not constant
cexprMath.cpp:21:49: error: call to non-constexpr function 'float
std::sqrt(float)'
cexprMath.cpp:21:49: error: field initializer is not constant

(the test of the message has changed between 4.6 and 4.7)