From 77f11d8a4ca22d897c01d4b592e92cff2f16334f Mon Sep 17 00:00:00 2001 From: Måns Rullgård Date: Sun, 16 Mar 2008 13:15:42 +0000 Subject: improve precision in mdct.c using double for some temporaries Originally committed as revision 12457 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/mdct.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/libavcodec/mdct.c b/libavcodec/mdct.c index e809fcdcbc..c51f809714 100644 --- a/libavcodec/mdct.c +++ b/libavcodec/mdct.c @@ -54,7 +54,7 @@ void ff_kbd_window_init(float *window, float alpha, int n) int ff_mdct_init(MDCTContext *s, int nbits, int inverse) { int n, n4, i; - float alpha; + double alpha; memset(s, 0, sizeof(*s)); n = 1 << nbits; @@ -85,10 +85,10 @@ int ff_mdct_init(MDCTContext *s, int nbits, int inverse) /* complex multiplication: p = a * b */ #define CMUL(pre, pim, are, aim, bre, bim) \ {\ - float _are = (are);\ - float _aim = (aim);\ - float _bre = (bre);\ - float _bim = (bim);\ + double _are = (are);\ + double _aim = (aim);\ + double _bre = (bre);\ + double _bim = (bim);\ (pre) = _are * _bre - _aim * _bim;\ (pim) = _are * _bim + _aim * _bre;\ } -- cgit v1.2.3