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authorMartin Storsjo <martin@martin.st>2012-09-14 11:10:29 +0300
committerMartin Storsjo <martin@martin.st>2012-09-14 11:10:29 +0300
commite79b172ba6f62855b7d5d5b86cd3c118be8750ea (patch)
treecfea9809bce501dc224031d9c0b88dfd5e234e74
parentbf0d9ddc43b25f0fb56ed69ff72d1c37c29e2db6 (diff)
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Revert "Do schur_div with a direct 64 bit division instead of a loop on x86"
This reverts commit 923f3e95f3e332d26f03cf6782f0ab61596ceef2. The optimized version differed from the original in a few cases (in some cases where the return value turned out to be negative while the original implementation returned a positive value), so revert it for now until it has been analyzed completely.
-rw-r--r--libFDK/src/fixpoint_math.cpp10
1 files changed, 0 insertions, 10 deletions
diff --git a/libFDK/src/fixpoint_math.cpp b/libFDK/src/fixpoint_math.cpp
index 7d5fbb5..000820c 100644
--- a/libFDK/src/fixpoint_math.cpp
+++ b/libFDK/src/fixpoint_math.cpp
@@ -443,15 +443,6 @@ FIXP_DBL sqrtFixp(FIXP_DBL op)
*****************************************************************************/
-#if defined(__x86__)
-FIXP_DBL schur_div(FIXP_DBL num, FIXP_DBL denum, INT count)
-{
- INT64 tmp=(INT64)num<<31;
- LONG div=(tmp/denum)>>(DFRACT_BITS-count);
- return (FIXP_DBL)(div) << (DFRACT_BITS-count);
-}
-
-#else
FIXP_DBL schur_div(FIXP_DBL num, FIXP_DBL denum, INT count)
{
@@ -478,7 +469,6 @@ FIXP_DBL schur_div(FIXP_DBL num, FIXP_DBL denum, INT count)
return (FIXP_DBL)(div << (DFRACT_BITS - count));
}
-#endif
#endif /* !defined(FUNCTION_schur_div) */