Mesa (master): gallivm: make sure we return the correct type when approximating log's

[Zack Rusin]

Module: Mesa
Branch: master
Commit: 63aa9b505a2439399af3e6ed47c5a0b1b791fba8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=63aa9b505a2439399af3e6ed47c5a0b1b791fba8

Author: Zack Rusin <zackr at vmware.com>
Date:   Thu Apr 22 13:00:48 2010 -0400

gallivm: make sure we return the correct type when approximating log's

---

 src/gallium/auxiliary/gallivm/lp_bld_arit.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_arit.c b/src/gallium/auxiliary/gallivm/lp_bld_arit.c
index 8e8fccc..d696763 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_arit.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_arit.c
@@ -1502,8 +1502,10 @@ lp_build_log2_approx(struct lp_build_context *bld,
       res = LLVMBuildAdd(bld->builder, logmant, logexp, "");
    }
 
-   if(p_exp)
+   if(p_exp) {
+      exp = LLVMConstBitCast(exp, vec_type);
       *p_exp = exp;
+   }
 
    if(p_floor_log2)
       *p_floor_log2 = logexp;