From: David Gibson <david@gibson.dropbear.id.au>
Date: Mon, 19 May 2014 11:21:48 +0000 (+1000)
Subject: bitmap: Use const qualifiers where possible
X-Git-Url: https://git.ozlabs.org/?p=ccan;a=commitdiff_plain;h=ebc67c3fc630b8c7e71880c4972f5f8cde3b9a53

bitmap: Use const qualifiers where possible

A number of functions in bitmap.h take parameters which they don't modify
but aren't currently marked as const.  This patch fixes that.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---

diff --git a/ccan/bitmap/bitmap.h b/ccan/bitmap/bitmap.h
index ee22d455..9841a37a 100644
--- a/ccan/bitmap/bitmap.h
+++ b/ccan/bitmap/bitmap.h
@@ -91,7 +91,7 @@ static inline void bitmap_fill(bitmap *bitmap, int nbits)
 	memset(bitmap, 0xff, bitmap_sizeof(nbits));
 }
 
-static inline void bitmap_copy(bitmap *dst, bitmap *src, int nbits)
+static inline void bitmap_copy(bitmap *dst, const bitmap *src, int nbits)
 {
 	memcpy(dst, src, bitmap_sizeof(nbits));
 }
@@ -113,7 +113,7 @@ BITMAP_DEF_BINOP(andnot, & ~)
 
 #undef BITMAP_DEF_BINOP
 
-static inline void bitmap_complement(bitmap *dst, bitmap *src, int nbits)
+static inline void bitmap_complement(bitmap *dst, const bitmap *src, int nbits)
 {
 	unsigned int i;
 
@@ -121,14 +121,16 @@ static inline void bitmap_complement(bitmap *dst, bitmap *src, int nbits)
 		dst[i].w = ~src[i].w;
 }
 
-static inline bool bitmap_equal(bitmap *src1, bitmap *src2, int nbits)
+static inline bool bitmap_equal(const bitmap *src1, const bitmap *src2,
+				int nbits)
 {
 	return (memcmp(src1, src2, BITMAP_HEADBYTES(nbits)) == 0)
 		&& (!BITMAP_HASTAIL(nbits)
 		    || (BITMAP_TAIL(src1, nbits) == BITMAP_TAIL(src2, nbits)));
 }
 
-static inline bool bitmap_intersects(bitmap *src1, bitmap *src2, int nbits)
+static inline bool bitmap_intersects(const bitmap *src1, const bitmap *src2,
+				     int nbits)
 {
 	unsigned int i;
 
@@ -142,7 +144,8 @@ static inline bool bitmap_intersects(bitmap *src1, bitmap *src2, int nbits)
 	return false;
 }
 
-static inline bool bitmap_subset(bitmap *src1, bitmap *src2, int nbits)
+static inline bool bitmap_subset(const bitmap *src1, const bitmap *src2,
+				 int nbits)
 {
 	unsigned int i;
 
@@ -156,7 +159,7 @@ static inline bool bitmap_subset(bitmap *src1, bitmap *src2, int nbits)
 	return true;
 }
 
-static inline bool bitmap_full(bitmap *bitmap, int nbits)
+static inline bool bitmap_full(const bitmap *bitmap, int nbits)
 {
 	unsigned int i;
 
@@ -171,7 +174,7 @@ static inline bool bitmap_full(bitmap *bitmap, int nbits)
 	return true;
 }
 
-static inline bool bitmap_empty(bitmap *bitmap, int nbits)
+static inline bool bitmap_empty(const bitmap *bitmap, int nbits)
 {
 	unsigned int i;