diff options
| author | Bruce Evans <bde@FreeBSD.org> | 2005-11-12 19:56:35 +0000 |
|---|---|---|
| committer | Bruce Evans <bde@FreeBSD.org> | 2005-11-12 19:56:35 +0000 |
| commit | 6e10a447f8aea9fe3d893c5da92f415c943fc50d (patch) | |
| tree | e942122977b3b320e6bd7faebb2421b0e4f55d9a | |
| parent | 787d6d77d575082b70ac4e23970dd15b0dfb2d97 (diff) | |
| download | src-6e10a447f8aea9fe3d893c5da92f415c943fc50d.tar.gz src-6e10a447f8aea9fe3d893c5da92f415c943fc50d.zip | |
Tweaked the minimax polynomial and improved its comments.
Notes
Notes:
svn path=/head/; revision=152341
| -rw-r--r-- | lib/msun/src/k_sinf.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/msun/src/k_sinf.c b/lib/msun/src/k_sinf.c index 05df14e5fce9..d393db7092af 100644 --- a/lib/msun/src/k_sinf.c +++ b/lib/msun/src/k_sinf.c @@ -21,13 +21,13 @@ static char rcsid[] = "$FreeBSD$"; #include "math.h" #include "math_private.h" -/* Range of maximum relative error in polynomial: ~[-1.61e-10, 1.621e-10]. */ +/* |sin(x)/x - s(x)| < 2**-32.5 (~[-1.57e-10, 1.572e-10]). */ static const float half = 0.5, -S1 = -0xaaaaab.0p-26, /* -0.1666666716337203979492187500 */ -S2 = 0x8888ba.0p-30, /* 0.008333379402756690979003906250 */ -S3 = -0xd02cb0.0p-36, /* -0.0001985307317227125167846679687 */ -S4 = 0xbe18ff.0p-42; /* 0.000002832675590980215929448604584 */ +S1 = -0xaaaaab.0p-26, /* -0.16666667163 */ +S2 = 0x8888bb.0p-30, /* 0.0083333803341 */ +S3 = -0xd02de1.0p-36, /* -0.00019853517006 */ +S4 = 0xbe6dbe.0p-42; /* 0.0000028376084629 */ float __kernel_sinf(float x, float y, int iy) |