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Author SHA1 Message Date
James Benton cf68959f99 gallivm: Updated lp_build_log2_approx to use a more accurate polynomial. 
Tested with lp_test_arit with 100% passes and piglit tests with 100%
pass for log but some tests still fail for pow.

Signed-off-by: José Fonseca <jfonseca@vmware.com>
 2012-04-05 20:34:11 +01:00
José Fonseca d312b224b6 gallivm: Simplify/reorder minimax helper. 2012-04-03 09:12:47 +01:00
José Fonseca ef1a2765a4 gallivm: Update minimax comments. 2011-07-22 18:52:09 -07:00
José Fonseca ffebc7f2a7 gallivm: Import the code to compute the minimax polynomials. 
It's quite a pain to remember the details after a while, and it is quite
likely we'll want to use this again, either for different polynomial
orders or different functions, so commit it here.
 2010-05-08 23:29:05 +01:00