tnvcsum.c - plan9port - [fork] Plan 9 from user space
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       ---
       tnvcsum.c (195B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <authsrv.h>
            4 
            5 uchar
            6 nvcsum(void *vmem, int n)
            7 {
            8         uchar *mem, sum;
            9         int i;
           10 
           11         sum = 9;
           12         mem = vmem;
           13         for(i = 0; i < n; i++)
           14                 sum += mem[i];
           15         return sum;
           16 }