Automated g4 rollback of changelist 381028293.

*** Reason for rollback ***

parpack depends on the timing functions that I removed from the lapack build..

*** Original change description ***

1. C++ implementations of ilaver to report the Eigen version number.  Though you could make the argument that it should report the LAPACK test suite number that this passes.
2.  xLAMCH implementation using <limits>. I can simplify the code for sfmin further because I know which branch of the if statement it takes.
3. Because xLAMCH and xLAMC2 live in the same fortran file, our overlay technique for testing LAPACK runs into problems because of linker issues. So we also split that function into it...

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PiperOrigin-RevId: 381082649
2 files changed