Initial commit

1 files changed, 43 insertions, 0 deletions

diff --git a/pkg/utilities/nttools/tjoin/removejcol.x b/pkg/utilities/nttools/tjoin/removejcol.x
new file mode 100644
index 00000000..1578021b
--- /dev/null
+++ b/pkg/utilities/nttools/tjoin/removejcol.x
@@ -0,0 +1,43 @@
+include "tjoin.h"
+
+# B.Simon	16-Apr-99	first code
+
+# REMOVE_JCOL -- Remove join columns from list of data columns
+
+procedure remove_jcol (tj, tol)
+
+pointer	tj		# i: Descriptor of table information
+pointer	tol		# i: Vector of tolerances used in equality test
+#--
+bool	match
+int	icol, jcol, kcol
+
+begin
+	kcol = 0
+	do icol = 1, TJ_DNUM(tj) {
+	    # Determine if this column is a join column
+	    # with strict equality testing
+
+	    match = false
+	    do jcol = 1, TJ_JNUM(tj) {
+		if (TJ_DCOL(tj,icol) == TJ_JCOL(tj,jcol) &&
+		    TOL_VAL(tol,jcol) == 0.0) {
+		    match = true
+		    break
+		}
+	    }
+
+	    # Don't copy these columns as they duplicate the values
+	    # in the join column in the other table. Also don't copy 
+	    # if icol == kcol in order to save time
+
+	    if (! match) {
+		kcol = kcol + 1
+		if (kcol < icol)
+		    TJ_DCOL(tj,kcol) = TJ_DCOL(tj,icol)
+	    }
+	}
+
+	TJ_DNUM(tj) = kcol
+end
+