# | Line 112 | Line 112 | register int x; | |
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112 | register int a; | |
113 | { | |
114 | static int cerr[NCOLS][3]; | |
115 | < | static int err[3]; |
115 | > | static int err[3], errp[3]; |
116 | int b; | |
117 | register int ison; | |
118 | ||
119 | b = col[a]; | |
120 | + | errp[a] = err[a]; |
121 | err[a] += b + cerr[x][a]; | |
122 | ison = err[a] > 128; | |
123 | if (ison) err[a] -= 256; | |
124 | < | cerr[x][a] = err[a] /= 2; |
124 | > | err[a] /= 3; |
125 | > | cerr[x][a] = err[a] + errp[a]; |
126 | return(ison); | |
127 | } |
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