From 2ee7cd15b3cbfbde466b9edb0eb87f6b32a14dbb Mon Sep 17 00:00:00 2001
From: Wim Taymans <wim.taymans@collabora.co.uk>
Date: Mon, 6 Sep 2010 15:22:26 +0200
Subject: smoother: avoid losing precision

Avoid losing precision by subtracting uint64 values before converting them to
doubles.
---
 src/pulsecore/time-smoother.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'src/pulsecore/time-smoother.c')

diff --git a/src/pulsecore/time-smoother.c b/src/pulsecore/time-smoother.c
index 1371ad56..0696cabc 100644
--- a/src/pulsecore/time-smoother.c
+++ b/src/pulsecore/time-smoother.c
@@ -320,10 +320,8 @@ static void estimate(pa_smoother *s, pa_usec_t x, pa_usec_t *y, double *deriv) {
 
         calc_abc(s);
 
-        tx = (double) x;
-
         /* Move to origin */
-        tx -= (double) s->ex;
+        tx = (double) (x - s->ex);
 
         /* Horner scheme */
         ty = (tx * (s->c + tx * (s->b + tx * s->a)));
-- 
cgit