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p20 and a minor change in p11

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This commit is contained in:
Henrik Hautakoski 2010-05-17 08:48:30 +02:00
parent fe45c3ab43
commit 64b6d0ae49
2 changed files with 55 additions and 9 deletions
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18
p11.c
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@ -18,15 +18,15 @@
#define prd(x, y) (grid[y][x] * grid[y-1][x+1] * grid[y-2][x+2] * grid[y-3][x+3])
/* macro for checking all directions of a square x,y */
#define check_square(x, y) \
do { \
if (x < 17) \
setprod(px(x, y)); \
if (y < 17) \
setprod(py(x, y)); \
if (x < 17 && y < 17) \
setprod(pd(x, y)); \
if (x >= 3 && y >= 3) \
#define check_square(x, y) \
do { \
if (x < 17) \
setprod(px(x, y)); \
if (y < 17) \
setprod(py(x, y)); \
if (x < 17 && y < 17) \
setprod(pd(x, y)); \
if (x >= 3 && y >= 3) \
setprod(prd(x, y)); \
} while(0)