Module: wine Branch: master Commit: 9008cd2f2437650ad41ce8a8924ed1828ca21889 URL: https://source.winehq.org/git/wine.git/?a=commit;h=9008cd2f2437650ad41ce8a89...
Author: Piotr Caban piotr@codeweavers.com Date: Mon Jun 21 16:37:44 2021 +0200
msvcrt: Match native cosf results in -Pi/4 - Pi/4 range.
Signed-off-by: Piotr Caban piotr@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/msvcrt/math.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c index 949bf12d66b..ecf5fdce4d8 100644 --- a/dlls/msvcrt/math.c +++ b/dlls/msvcrt/math.c @@ -680,16 +680,17 @@ static float __sindf(double x) /* Copied from musl: src/math/__cosdf.c */ static float __cosdf(double x) { - static const double C0 = -0x1ffffffd0c5e81.0p-54, - C1 = 0x155553e1053a42.0p-57, - C2 = -0x16c087e80f1e27.0p-62, - C3 = 0x199342e0ee5069.0p-68; - double r, w, z; + static const double C0 = -0x1.0000000000000p-1, + C1 = 0x1.5555555555555p-5, + C2 = -0x1.6c16c16c16c17p-10, + C3 = 0x1.a01a01a01a01ap-16, + C4 = -0x1.27e4fb7789f5cp-22; + double z;
z = x * x; - w = z * z; - r = C2 + z * C3; - return ((1.0 + z * C0) + w * C1) + (w * z) * r; + if (x > -7.8163146972656250e-03 && x < 7.8163146972656250e-03) + return 1 + C0 * z; + return 1.0 + z * (C0 + z * (C1 + z * (C2 + z * (C3 + z * C4)))); }
static const UINT64 exp2f_T[] = {