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| author | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2015-11-13 11:18:37 -0500 |
|---|---|---|
| committer | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2015-12-01 19:05:19 -0500 |
| commit | 789ef087c636129af3db75eac71bee0b01a5f2fc (patch) | |
| tree | 0ccfa5484bc909758335ea2dcbb171ba5635771e | |
| parent | 736e2e2c30088d0c2a428a51372c78a0bfb7f356 (diff) | |
| download | ffmpeg-789ef087c636129af3db75eac71bee0b01a5f2fc.tar.gz | |
avcodec/ppc/fdctdsp: use more accurate constants
Whoever wrote this stuff had a pretty bad libm - digits differ pretty
quickly.
Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
| -rw-r--r-- | libavcodec/ppc/fdctdsp.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/libavcodec/ppc/fdctdsp.c b/libavcodec/ppc/fdctdsp.c index 924d12c911..6659046f98 100644 --- a/libavcodec/ppc/fdctdsp.c +++ b/libavcodec/ppc/fdctdsp.c @@ -37,13 +37,13 @@ #define vu16(v) ((vector unsigned short) (v)) #define vu32(v) ((vector unsigned int) (v)) -#define C1 0.98078525066375732421875000 /* cos(1 * PI / 16) */ -#define C2 0.92387950420379638671875000 /* cos(2 * PI / 16) */ -#define C3 0.83146959543228149414062500 /* cos(3 * PI / 16) */ -#define C4 0.70710676908493041992187500 /* cos(4 * PI / 16) */ -#define C5 0.55557024478912353515625000 /* cos(5 * PI / 16) */ -#define C6 0.38268342614173889160156250 /* cos(6 * PI / 16) */ -#define C7 0.19509032368659973144531250 /* cos(7 * PI / 16) */ +#define C1 0.98078528040323044912618224 /* cos(1 * PI / 16) */ +#define C2 0.92387953251128675612818319 /* cos(2 * PI / 16) */ +#define C3 0.83146961230254523707878838 /* cos(3 * PI / 16) */ +#define C4 0.70710678118654752440084436 /* cos(4 * PI / 16) */ +#define C5 0.55557023301960222474283081 /* cos(5 * PI / 16) */ +#define C6 0.38268343236508977172845998 /* cos(6 * PI / 16) */ +#define C7 0.19509032201612826784828487 /* cos(7 * PI / 16) */ #define W0 -(2 * C2) #define W1 (2 * C6) |