[patch] Toeplitz system solver

Jules Bergmann jules at codesourcery.com
Thu Sep 29 15:37:04 UTC 2005

This patch implements and tests the toeplitz system solver. 
Implementation is based on the TASP C-VSIPL version.

To write a generic version that works for both real and complex, I 
needed a conj function that works for both real and complex numbers. 
However, the VSIPL++ conj is limited to just complex<T>.  To get around 
this, I added impl_conj (and impl_real and impl_imag) scalar and 
element-wise functions that work for both real and complex (conj(real) 
is just the identity function).

It may be worthwhile to make 'conj' have the same behavior as 
'impl_conj'.  This would let users write generic code that works for 
both complex and real values.

				-- Jules
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