diff options
| author | José Fonseca <jfonseca@vmware.com> | 2010-08-11 18:44:17 +0100 |
|---|---|---|
| committer | José Fonseca <jfonseca@vmware.com> | 2010-08-11 18:45:26 +0100 |
| commit | b481a1237e00e1e1fb68ffca0653df3a96f21788 (patch) | |
| tree | 04c3815cc97bab4b16eb2612b6194a9eed742157 /src | |
| parent | 457378e031ffb89a2011604c7798a6f5f2142207 (diff) | |
gallivm: Fix and enable the extra Newton/Raphson step in lp_build_rcp().
Thanks to Michal for spotting this.
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_arit.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_arit.c b/src/gallium/auxiliary/gallivm/lp_bld_arit.c index cf2feeb163..816ee70119 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_arit.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_arit.c @@ -1274,7 +1274,7 @@ lp_build_rcp(struct lp_build_context *bld, * when we have a better system in place to track minimum precision. */ -#if 0 +#if 1 /* * Do one Newton-Raphson step to improve precision: * @@ -1291,7 +1291,7 @@ lp_build_rcp(struct lp_build_context *bld, res = LLVMBuildFSub(bld->builder, two, res, ""); res = LLVMBuildFMul(bld->builder, res, rcp_a, ""); - return rcp_a; + return res; #else return lp_build_intrinsic_unary(bld->builder, "llvm.x86.sse.rcp.ps", lp_build_vec_type(type), a); #endif |