From 279a7d4091950e26057fe36a6dcb4463c2bebb30 Mon Sep 17 00:00:00 2001
From: Christopher James Lahey <clahey@ximian.com>
Date: Sat, 31 Mar 2001 11:38:21 +0000
Subject: Added e_bit_array_cross_and and e_bit_array_cross_or.

2001-03-31  Christopher James Lahey  <clahey@ximian.com>

	* gal/util/e-bit-array.c, gal/util/e-bit-array.h: Added
	e_bit_array_cross_and and e_bit_array_cross_or.

svn path=/trunk/; revision=9069
---
 e-util/e-bit-array.c | 26 ++++++++++++++++++++++++++
 e-util/e-bit-array.h |  4 +++-
 2 files changed, 29 insertions(+), 1 deletion(-)

(limited to 'e-util')

diff --git a/e-util/e-bit-array.c b/e-util/e-bit-array.c
index ba65c53120..f8934f8b4e 100644
--- a/e-util/e-bit-array.c
+++ b/e-util/e-bit-array.c
@@ -294,6 +294,32 @@ e_bit_array_bit_count (EBitArray *eba)
 	return eba->bit_count;
 }
 
+gboolean
+e_bit_array_cross_and           (EBitArray    *eba)
+{
+	int i;
+	for (i = 0; i < eba->bit_count / 32; i++) {
+		if (eba->data[i] != ONES)
+			return FALSE;
+	}
+	if ((eba->bit_count % 32) && ((eba->data[i] & BITMASK_LEFT(eba->bit_count)) != BITMASK_LEFT(eba->bit_count)))
+		return FALSE;
+	return TRUE;
+}
+
+gboolean
+e_bit_array_cross_or            (EBitArray    *eba)
+{
+	int i;
+	for (i = 0; i < eba->bit_count / 32; i++) {
+		if (eba->data[i] != 0)
+			return TRUE;
+	}
+	if ((eba->bit_count % 32) && ((eba->data[i] & BITMASK_LEFT(eba->bit_count)) != 0))
+		return TRUE;
+	return FALSE;
+}
+
 #define OPERATE(object, i,mask,grow) ((grow) ? (((object)->data[(i)]) |= ((guint32) ~(mask))) : (((object)->data[(i)]) &= (mask)))
 
 void
diff --git a/e-util/e-bit-array.h b/e-util/e-bit-array.h
index 5cb33b22b7..7469413be3 100644
--- a/e-util/e-bit-array.h
+++ b/e-util/e-bit-array.h
@@ -57,7 +57,6 @@ void       e_bit_array_select_single_row   (EBitArray    *eba,
 void       e_bit_array_toggle_single_row   (EBitArray    *eba,
 					    int           row);
 
-/* Protected Functions */
 void       e_bit_array_insert              (EBitArray    *esm,
 					    int           row,
 					    int           count);
@@ -72,6 +71,9 @@ void       e_bit_array_move_row            (EBitArray    *esm,
 					    int           new_row);
 gint       e_bit_array_bit_count           (EBitArray    *esm);
 
+gboolean   e_bit_array_cross_and           (EBitArray    *esm);
+gboolean   e_bit_array_cross_or            (EBitArray    *esm);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
-- 
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