From: michal <michal@michal-laptop.(none)>
Date: Wed, 29 Aug 2007 20:40:18 +0000 (+0100)
Subject: Fix ffs().
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5c337508feedfa35ba3f534bf212f08265db2022;p=mesa.git

Fix ffs().
---

diff --git a/src/mesa/pipe/p_util.h b/src/mesa/pipe/p_util.h
old mode 100644
new mode 100755
index 3eff3328c78..436bda21393
--- a/src/mesa/pipe/p_util.h
+++ b/src/mesa/pipe/p_util.h
@@ -39,10 +39,10 @@
 #define Elements(x) sizeof(x)/sizeof(*(x))
 
 /**
- * Return pointer aligned to next multiple of 16 bytes.
+ * Return a pointer aligned to next multiple of 16 bytes.
  */
 static INLINE void *
-align16(void *unaligned)
+align16( void *unaligned )
 {
    union {
       void *p;
@@ -59,7 +59,12 @@ static INLINE unsigned ffs( unsigned u )
 {
    unsigned i;
 
+   if( u == 0 ) {
+      return 0;
+   }
+
    __asm bsf eax, [u]
+   __asm inc eax
    __asm mov [i], eax
 
    return i;