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Simplify XNORM() and YNORM()

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Simplify (M - (n % M)) % M  to M - (n % M), for n < 0.
This commit is contained in:
Markus Armbruster 2008-03-24 14:00:59 +01:00
parent 9c8109768d
commit 5f76428524
1 changed files with 2 additions and 2 deletions
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4
include/xy.h
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@ -43,9 +43,9 @@
#define XYOFFSET(x, y) (((y) * WORLD_X + (x)) / 2) #define XYOFFSET(x, y) (((y) * WORLD_X + (x)) / 2)
#define XNORM(x) \ #define XNORM(x) \
(((x) < 0) ? ((WORLD_X - (-(x) % WORLD_X)) % WORLD_X) : ((x) % WORLD_X)) (((x) < 0) ? (WORLD_X - (-(x) % WORLD_X)) : ((x) % WORLD_X))
#define YNORM(y) \ #define YNORM(y) \
(((y) < 0) ? ((WORLD_Y - (-(y) % WORLD_Y)) % WORLD_Y) : ((y) % WORLD_Y)) (((y) < 0) ? (WORLD_Y - (-(y) % WORLD_Y)) : ((y) % WORLD_Y))
struct range { struct range {
coord lx; /* low-range x,y */ coord lx; /* low-range x,y */