These are the pthread dlls you may need to run InvertTrishear. Use pthreadGC2-64 for the 64-bit version and pthreadGC2-32 for the 32-bit version.

This is the 2.9.1 release of the pthread dlls as downloaded from https://www.sourceware.org/pthreads-win32/

These dlls are licensed under the GNU LGPL license. In order to fulfill the terms of that license, I have included the source code (in the folder pthreads-w32-2-9-1-release), but you are only likely to need the pthreadGC2-64.dll or pthreadGC2-32.dll file.

To use the dlls, do one of the following:
1) Copy the appropriate dll into the same folder as InvertTrishear
or
2) Add the folder containing the dll to your path environment variable.
or
3) Copy the dll to C:\Windows\System32. Open a run dialogue and type "regsvr32 phtreadGC2-64.dll" or "regsvr32 phtreadGC2-64.dll"