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Diffstat (limited to 'pkg/tbtables/tbyoff.x')
| -rw-r--r-- | pkg/tbtables/tbyoff.x | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/pkg/tbtables/tbyoff.x b/pkg/tbtables/tbyoff.x new file mode 100644 index 00000000..c7c33513 --- /dev/null +++ b/pkg/tbtables/tbyoff.x @@ -0,0 +1,20 @@ +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 |