diff options
Diffstat (limited to 'home/sine.asm')
| -rw-r--r-- | home/sine.asm | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/home/sine.asm b/home/sine.asm index eff5ed299..a32a31612 100644 --- a/home/sine.asm +++ b/home/sine.asm @@ -1,13 +1,10 @@ Cosine:: ; 1b0f -; Return d * cos(a) in hl - add %010000 ; 90 degrees - +; a = d * cos(a * pi/32) + add %010000 ; cos(x) = sin(x + pi/2) + ; fallthrough Sine:: ; 1b11 -; Return d * sin(a) in hl -; a is a signed 6-bit value. - +; a = d * sin(a * pi/32) ld e, a - homecall _Sine ret ; 1b1e |