Bug#474401: function `atanhf' missing from math.h of mingw32

[oseen]

Package: mingw32-runtime
Version: 3.13-1

The line 458 of /usr/i586-mingw32msvc/include/math.h of this package is:

extern float __cdecl atanf  (float);

however, the function should be `atanhf' not `atanf', i.e:

extern float __cdecl atanhf (flow);