From 259237fae792e8f19d9b7920b2354f75bc1789e2 Mon Sep 17 00:00:00 2001 From: quou Date: Mon, 23 Sep 2024 21:11:29 +1000 Subject: initial commit, basic platform and rendering code. --- maths.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 maths.h (limited to 'maths.h') diff --git a/maths.h b/maths.h new file mode 100644 index 0000000..bd87839 --- /dev/null +++ b/maths.h @@ -0,0 +1,22 @@ +#ifndef maths_h +#define maths_h + +#define mini(a_, b_) ((a_) < (b_) ? (a_) : (b_)) +#define maxi(a_, b_) ((a_) > (b_) ? (a_) : (b_)) +#define clamp(v_, min_, max_) (maxi(min_, mini(max_, v_))) +#define absolute(v_) ((v_) < 0? -(v_): (v_)) + +#define fbits 0x9 +#define f1 0x200 + +#define sin_table_count 0x100 +#define sin_table_mask 0x0ff +#define sqrt_table_count 0x800 +#define sqrt_table_mask 0x07f + +extern int sin_table[sin_table_count]; +extern int cos_table[sin_table_count]; + +void init_maths(void); + +#endif -- cgit v1.2.3-54-g00ecf