Mesa (mesa_7_7_branch): llvmpipe: Fix yet another copynpaste typo in lp_build_log2_approx.

[Jose Fonseca]

Module: Mesa
Branch: mesa_7_7_branch
Commit: e20547042c03e22234c9580f005286552bd4ae18
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e20547042c03e22234c9580f005286552bd4ae18

Author: José Fonseca <jfonseca at vmware.com>
Date:   Tue Dec 15 14:46:43 2009 +0000

llvmpipe: Fix yet another copynpaste typo in lp_build_log2_approx.

Now fslight looks perfect.

---

 src/gallium/drivers/llvmpipe/lp_bld_arit.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_arit.c b/src/gallium/drivers/llvmpipe/lp_bld_arit.c
index 46dabda..a94b30a 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_arit.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_arit.c
@@ -1290,7 +1290,7 @@ lp_build_log2_approx(struct lp_build_context *bld,
                                     Elements(lp_build_log2_polynomial));
 
       /* This effectively increases the polynomial degree by one, but ensures that log2(1) == 0*/
-      logmant = LLVMBuildMul(bld->builder, logmant, LLVMBuildMul(bld->builder, mant, bld->one, ""), "");
+      logmant = LLVMBuildMul(bld->builder, logmant, LLVMBuildSub(bld->builder, mant, bld->one, ""), "");
 
       res = LLVMBuildAdd(bld->builder, logmant, logexp, "");
    }