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include "tbtables.h"
# tbyoff -- Y column offset
# This function returns the offset in char from the beginning of the
# table data file to a specific element in the table.
# This is for column-ordered tables.
long procedure tbyoff (tp, cp, rownum)
pointer tp # i: pointer to table descriptor
pointer cp # i: pointer to column descriptor
int rownum # i: the row number
long offset
begin
offset = TB_BOD(tp) + COL_OFFSET(cp) * TB_ALLROWS(tp) +
(rownum-1) * COL_LEN(cp)
return (offset)
end
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