From fbf12681ab1f92b647818478641bd329d9e2810b Mon Sep 17 00:00:00 2001
From: "Thomas G. Lockhart" <lockhart@fourpalms.org>
Date: Sat, 20 Sep 1997 16:17:45 +0000
Subject: [PATCH] Include tinterval comparison functions for span of interval.
---
src/backend/utils/adt/date.c | 211 ++++++++++++++++++++++++++++++++++-
1 file changed, 206 insertions(+), 5 deletions(-)
diff --git a/src/backend/utils/adt/date.c b/src/backend/utils/adt/date.c
index 7843dee6493..5f76ffc8fa3 100644
--- a/src/backend/utils/adt/date.c
+++ b/src/backend/utils/adt/date.c
@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/adt/date.c,v 1.18 1997/09/08 21:48:21 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/date.c,v 1.19 1997/09/20 16:17:45 thomas Exp $
*
* NOTES
* This code is actually (almost) unused.
@@ -565,16 +565,217 @@ reltimege(RelativeTime t1, RelativeTime t2)
/*
- * intervaleq - returns 1, iff interval i1 is equal to interval i2
+ * intervalsame - returns 1, iff interval i1 is same as interval i2
+ * Check begin and end time.
*/
bool
-intervaleq(TimeInterval i1, TimeInterval i2)
+intervalsame(TimeInterval i1, TimeInterval i2)
{
if (i1->status == T_INTERVAL_INVAL || i2->status == T_INTERVAL_INVAL)
- return (0); /* invalid interval */
+ return (FALSE); /* invalid interval */
return (abstimeeq(i1->data[0], i2->data[0]) &&
abstimeeq(i1->data[1], i2->data[1]));
-}
+} /* intervalsame() */
+
+
+/*
+ * intervaleq - returns 1, iff interval i1 is equal to interval i2
+ * Check length of intervals.
+ */
+bool
+intervaleq(TimeInterval i1, TimeInterval i2)
+{
+ AbsoluteTime t10, t11, t20, t21;
+
+ if (i1->status == T_INTERVAL_INVAL || i2->status == T_INTERVAL_INVAL)
+ return (FALSE); /* invalid interval */
+
+ t10 = i1->data[0];
+ t11 = i1->data[1];
+ t20 = i2->data[0];
+ t21 = i2->data[1];
+
+ if ((t10 == INVALID_ABSTIME) || (t20 == INVALID_ABSTIME)
+ || (t20 == INVALID_ABSTIME) || (t21 == INVALID_ABSTIME))
+ return (FALSE);
+
+ if (t10 == CURRENT_ABSTIME)
+ t10 = GetCurrentTransactionStartTime();
+ if (t11 == CURRENT_ABSTIME)
+ t11 = GetCurrentTransactionStartTime();
+ if (t20 == CURRENT_ABSTIME)
+ t20 = GetCurrentTransactionStartTime();
+ if (t21 == CURRENT_ABSTIME)
+ t21 = GetCurrentTransactionStartTime();
+
+ return ((t11-t10) == (t21-t20));
+} /* intervaleq() */
+
+/*
+ * intervalne - returns 1, iff interval i1 is not equal to interval i2
+ * Check length of intervals.
+ */
+bool
+intervalne(TimeInterval i1, TimeInterval i2)
+{
+ AbsoluteTime t10, t11, t20, t21;
+
+ if (i1->status == T_INTERVAL_INVAL || i2->status == T_INTERVAL_INVAL)
+ return (FALSE); /* invalid interval */
+
+ t10 = i1->data[0];
+ t11 = i1->data[1];
+ t20 = i2->data[0];
+ t21 = i2->data[1];
+
+ if ((t10 == INVALID_ABSTIME) || (t20 == INVALID_ABSTIME)
+ || (t20 == INVALID_ABSTIME) || (t21 == INVALID_ABSTIME))
+ return (FALSE);
+
+ if (t10 == CURRENT_ABSTIME)
+ t10 = GetCurrentTransactionStartTime();
+ if (t11 == CURRENT_ABSTIME)
+ t11 = GetCurrentTransactionStartTime();
+ if (t20 == CURRENT_ABSTIME)
+ t20 = GetCurrentTransactionStartTime();
+ if (t21 == CURRENT_ABSTIME)
+ t21 = GetCurrentTransactionStartTime();
+
+ return ((t11-t10) != (t21-t20));
+} /* intervalne() */
+
+/*
+ * intervallt - returns TRUE, iff interval i1 is less than interval i2
+ * Check length of intervals.
+ */
+bool
+intervallt(TimeInterval i1, TimeInterval i2)
+{
+ AbsoluteTime t10, t11, t20, t21;
+
+ if (i1->status == T_INTERVAL_INVAL || i2->status == T_INTERVAL_INVAL)
+ return (FALSE); /* invalid interval */
+
+ t10 = i1->data[0];
+ t11 = i1->data[1];
+ t20 = i2->data[0];
+ t21 = i2->data[1];
+
+ if ((t10 == INVALID_ABSTIME) || (t20 == INVALID_ABSTIME)
+ || (t20 == INVALID_ABSTIME) || (t21 == INVALID_ABSTIME))
+ return (FALSE);
+
+ if (t10 == CURRENT_ABSTIME)
+ t10 = GetCurrentTransactionStartTime();
+ if (t11 == CURRENT_ABSTIME)
+ t11 = GetCurrentTransactionStartTime();
+ if (t20 == CURRENT_ABSTIME)
+ t20 = GetCurrentTransactionStartTime();
+ if (t21 == CURRENT_ABSTIME)
+ t21 = GetCurrentTransactionStartTime();
+
+ return ((t11-t10) < (t21-t20));
+} /* intervallt() */
+
+/*
+ * intervalle - returns TRUE, iff interval i1 is less than or equal to interval i2
+ * Check length of intervals.
+ */
+bool
+intervalle(TimeInterval i1, TimeInterval i2)
+{
+ AbsoluteTime t10, t11, t20, t21;
+
+ if (i1->status == T_INTERVAL_INVAL || i2->status == T_INTERVAL_INVAL)
+ return (FALSE); /* invalid interval */
+
+ t10 = i1->data[0];
+ t11 = i1->data[1];
+ t20 = i2->data[0];
+ t21 = i2->data[1];
+
+ if ((t10 == INVALID_ABSTIME) || (t20 == INVALID_ABSTIME)
+ || (t20 == INVALID_ABSTIME) || (t21 == INVALID_ABSTIME))
+ return (FALSE);
+
+ if (t10 == CURRENT_ABSTIME)
+ t10 = GetCurrentTransactionStartTime();
+ if (t11 == CURRENT_ABSTIME)
+ t11 = GetCurrentTransactionStartTime();
+ if (t20 == CURRENT_ABSTIME)
+ t20 = GetCurrentTransactionStartTime();
+ if (t21 == CURRENT_ABSTIME)
+ t21 = GetCurrentTransactionStartTime();
+
+ return ((t11-t10) <= (t21-t20));
+} /* intervalle() */
+
+/*
+ * intervalgt - returns TRUE, iff interval i1 is less than interval i2
+ * Check length of intervals.
+ */
+bool
+intervalgt(TimeInterval i1, TimeInterval i2)
+{
+ AbsoluteTime t10, t11, t20, t21;
+
+ if (i1->status == T_INTERVAL_INVAL || i2->status == T_INTERVAL_INVAL)
+ return (FALSE); /* invalid interval */
+
+ t10 = i1->data[0];
+ t11 = i1->data[1];
+ t20 = i2->data[0];
+ t21 = i2->data[1];
+
+ if ((t10 == INVALID_ABSTIME) || (t20 == INVALID_ABSTIME)
+ || (t20 == INVALID_ABSTIME) || (t21 == INVALID_ABSTIME))
+ return (FALSE);
+
+ if (t10 == CURRENT_ABSTIME)
+ t10 = GetCurrentTransactionStartTime();
+ if (t11 == CURRENT_ABSTIME)
+ t11 = GetCurrentTransactionStartTime();
+ if (t20 == CURRENT_ABSTIME)
+ t20 = GetCurrentTransactionStartTime();
+ if (t21 == CURRENT_ABSTIME)
+ t21 = GetCurrentTransactionStartTime();
+
+ return ((t11-t10) > (t21-t20));
+} /* intervalgt() */
+
+/*
+ * intervalge - returns TRUE, iff interval i1 is less than or equal to interval i2
+ * Check length of intervals.
+ */
+bool
+intervalge(TimeInterval i1, TimeInterval i2)
+{
+ AbsoluteTime t10, t11, t20, t21;
+
+ if (i1->status == T_INTERVAL_INVAL || i2->status == T_INTERVAL_INVAL)
+ return (FALSE); /* invalid interval */
+
+ t10 = i1->data[0];
+ t11 = i1->data[1];
+ t20 = i2->data[0];
+ t21 = i2->data[1];
+
+ if ((t10 == INVALID_ABSTIME) || (t20 == INVALID_ABSTIME)
+ || (t20 == INVALID_ABSTIME) || (t21 == INVALID_ABSTIME))
+ return (FALSE);
+
+ if (t10 == CURRENT_ABSTIME)
+ t10 = GetCurrentTransactionStartTime();
+ if (t11 == CURRENT_ABSTIME)
+ t11 = GetCurrentTransactionStartTime();
+ if (t20 == CURRENT_ABSTIME)
+ t20 = GetCurrentTransactionStartTime();
+ if (t21 == CURRENT_ABSTIME)
+ t21 = GetCurrentTransactionStartTime();
+
+ return ((t11-t10) >= (t21-t20));
+} /* intervalge() */
+
/*
* intervalleneq - returns 1, iff length of interval i is equal to
--
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