src/usr.bin/cvs/rcsnum.c - diff

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-version 1.16, 2005/09/19 15:45:16
+version 1.17, 2005/10/10 13:06:24
 Line 327
 Line 327
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  }
  /*
+  * rcsnum_dec()
+  *
+  * Decreases the revision number specified in <num>
+  * Returns pointer to the <num> on success, or NULL on failure.
+  */
+ RCSNUM *
+ rcsnum_dec(RCSNUM *num)
+ {
+         if (num->rn_id[num->rn_len - 1] <= 0)
+                 return (NULL);
+         num->rn_id[num->rn_len - 1]--;
+         return (num);
+ }
+ /*
   * rcsnum_revtobr()
   *
   * Retrieve the branch number associated with the revision number <num>.