diff options
| author | José Fonseca <[email protected]> | 2011-07-20 14:53:08 -0700 |
|---|---|---|
| committer | José Fonseca <[email protected]> | 2011-07-22 18:52:09 -0700 |
| commit | af82ff556cdd748f9f6b0d60d53afaaf369b1c5b (patch) | |
| tree | 96b5cb20e3c92dbf7af249a0a2291a97c4a2fa8e /src | |
| parent | 47d6d44a231b811f1bba05478a6bbfb1e3fdb27b (diff) | |
gallivm: Fix lp_build_exp2 order 4-5 polynomial coefficients and bump order.
Not sure how I computed these, but they were wrong (which explains why
bumping the polynomial order before never improved precision).
This allows to pass the EXP test cases of PSPrecision/VSPrecision DCTs.
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_arit.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_arit.c b/src/gallium/auxiliary/gallivm/lp_bld_arit.c index fce4685cc2d..0c075bafb2c 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_arit.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_arit.c @@ -61,7 +61,7 @@ #include "lp_bld_arit.h" -#define EXP_POLY_DEGREE 3 +#define EXP_POLY_DEGREE 5 #define LOG_POLY_DEGREE 5 @@ -2218,18 +2218,18 @@ lp_build_polynomial(struct lp_build_context *bld, */ const double lp_build_exp2_polynomial[] = { #if EXP_POLY_DEGREE == 5 - 0.999999999690134838155, - 0.583974334321735217258, - 0.164553105719676828492, - 0.0292811063701710962255, - 0.00354944426657875141846, - 0.000296253726543423377365 + 0.999999925063526176901, + 0.693153073200168932794, + 0.240153617044375388211, + 0.0558263180532956664775, + 0.00898934009049466391101, + 0.00187757667519147912699 #elif EXP_POLY_DEGREE == 4 - 1.00000001502262084505, - 0.563586057338685991394, - 0.150436017652442413623, - 0.0243220604213317927308, - 0.0025359088446580436489 + 1.00000259337069434683, + 0.693003834469974940458, + 0.24144275689150793076, + 0.0520114606103070150235, + 0.0135341679161270268764 #elif EXP_POLY_DEGREE == 3 0.999925218562710312959, 0.695833540494823811697, |