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2/7 Fixed-Point math

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This commit is contained in:
Edward R. Gonzalez
2026-05-24 21:06:05 -04:00
parent d1919137a3
commit e409fe0b2d
6 changed files with 63 additions and 113 deletions
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code/duffle/math.h
+13 -2
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@@ -12,6 +12,7 @@ typedef def_farray(S2, 2);
typedef def_farray(S2, 3);
typedef def_farray(S4, 2);
typedef def_farray(S4, 3);
typedef def_farray(S4, 4);
typedef S2 A3A3_S2[3][3];
typedef def_struct(Extent2_S2) { S2 width; S2 height; };
@@ -33,7 +34,17 @@ typedef def_struct(Rect_S4) { S4 x; S4 y; S4 width; S4 height; };
typedef def_struct(M3_S2) { A3A3_S2 m; A3_S4 t; };
#define v2s2(x,y) (V2_S2){x,y}
#define v3s2(x,y,z) (V3_S2){x,y,z}
#define v3s4(x,y,z) (V3_S4){x,y,z}
#define v3s2(x,y,z) (V3_S2){x,y,z,0}
#define v3s4(x,y,z) (V3_S4){x,y,z,0}
#define v4s2(x,y,z,w) (V4_S2){x,y,z,w}
#define v4s4(x,y,z,w) (V4_S4){x,y,z,w}
FI_ void add_a3s4(A3_S4_R out_a, A3_S4 b) {
(out_a[0])[0] += b[0];
(out_a[0])[1] += b[1];
(out_a[0])[2] += b[2];
}
FI_ void add_v3s4(V3_S4_R out_a, V3_S4 b) {
add_a3s4(pcast(A3_S4_R, out_a), pcast(A3_S4, b));
}