Move various TEST_c_c tests from libm-test.inc to auto-libm-test-inc

[Andreas Jaeger]

On 12/20/2013 12:23 AM, Joseph S. Myers wrote:
> This patch moves tests of ccos, ccosh, cexp, clog, csqrt, ctan and
> ctanh to auto-libm-test-in, adding the required support to
> gen-auto-libm-tests.  Other TEST_c_c functions aren't moved for now
> (although the relevant table entries are put in gen-auto-libm-tests
> for it to know how to handle them): clog10 because of a known MPC bug
> causing it to hang for at least some pure imaginary inputs (fixed in
> SVN, but I'd rather not rely on unreleased versions of MPFR or MPC
> even if relying on very recent releases); the inverse trig and
> hyperbolic functions because of known slowness in special cases; and
> csin / csinh because of observed slowness that I need to investigate
> and report to the MPC maintainers.  Slowness can be bypassed by moving
> to incremental generation (only for new / changed tests) rather than
> regenerating the whole of auto-libm-test-out every time, but that
> needs implementing.  (This patch takes the time for running
> gen-auto-libm-tests from about one second to seven, on my system,
> which I think is reasonable.  The slow functions would make it take
> several minutes at least, which seems unreasonable.)

I agree with your handling of the slow functions.

The patch is fine, thanks.

Andreas
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