[vsipl++] patch: enable/disable fftwf, fftw, and fftwl individually

[Stefan Seefeld]

Jules Bergmann wrote:

>> * I fixed code (in configure.ac) that assumed its default value was 
>> '', not '0'.
> 
> Why change this?


The 'provide_...' macros have values of either '0' or '1', but never ''.
Thus, the original test:

>  if test "x$provide_fft_long_double" != "x"; then

will always succeed. I don't mind whether we use 0/1 or ''/'something', 
but we should either test the real state or not test at all. So, the 
least disruptive change would be just to take out the test, as it is 
always true.

Thanks,
		Stefan


-- 
Stefan Seefeld
CodeSourcery
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