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Extra utility function.

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[originally from svn r6780]
This commit is contained in:
Simon Tatham
2006-08-05 16:35:25 +00:00
parent 6837cc46cd
commit f05c25347d
2 changed files with 9 additions and 0 deletions
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8
dsf.c
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@ -28,3 +28,11 @@ void dsf_merge(int *dsf, int v1, int v2)
v2 = dsf_canonify(dsf, v2); v2 = dsf_canonify(dsf, v2);
dsf[v2] = v1; dsf[v2] = v1;
} }
void dsf_init(int *dsf, int len)
{
int i;
for (i = 0; i < len; i++)
dsf[i] = i;
}

1
puzzles.h
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@ -280,6 +280,7 @@ void draw_rect_outline(drawing *dr, int x, int y, int w, int h,
*/ */
int dsf_canonify(int *dsf, int val); int dsf_canonify(int *dsf, int val);
void dsf_merge(int *dsf, int v1, int v2); void dsf_merge(int *dsf, int v1, int v2);
void dsf_init(int *dsf, int len);
/* /*
* version.c * version.c