[Bug libstdc++/59421] New: stof(), stod() wrong result

[stefan.helm...@t-online.de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59421

Bug ID: 59421
   Summary: stof(), stod() wrong result
   Product: gcc
   Version: 4.8.1
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: libstdc++
  Assignee: unassigned at gcc dot gnu.org
  Reporter: stefan.helm...@t-online.de

sometimes:

y = stod(str); // with str = "0"
cout << y << endl;

prints out:
0.4167

It depends on where the executable is copied to. It does not depend on
optimisation level. I use c++11.

workaround:

y = stod(""+str+"");

Windows 7 64 bit, mingw-builds/x64-4.8.1-posix-seh-rev5

[Bug libstdc++/59421] stof(), stod() wrong result

[stefan.helm...@t-online.de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59421

--- Comment #3 from Stefan Helmert  ---
OK, please try this code:
https://github.com/TheTesla/DigiKeyCSV2KiCadSCHpatcher/tree/gcctest

The relevant function is norm_value().