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authortmk2012-11-24 16:34:59 +0900
committertmk2012-11-24 16:34:59 +0900
commit94b4fba6e6afa6d7d68051a1ceb6987bb6002ccd (patch)
treebd9f35b876d13bca20c7655fbbb93f4733aea0dd /common/util.c
parent83f0e800e53a6d91a814d19f94bc5401a6322971 (diff)
Add bitpop16() in util.c.
Diffstat (limited to 'common/util.c')
-rw-r--r--common/util.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/common/util.c b/common/util.c
index 644301fe8..9d8fb9321 100644
--- a/common/util.c
+++ b/common/util.c
@@ -22,7 +22,7 @@ uint8_t bitpop(uint8_t bits)
{
uint8_t c;
for (c = 0; bits; c++)
- bits &= bits -1;
+ bits &= bits - 1;
return c;
/*
const uint8_t bit_count[] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
@@ -30,6 +30,14 @@ uint8_t bitpop(uint8_t bits)
*/
}
+uint8_t bitpop16(uint16_t bits)
+{
+ uint8_t c;
+ for (c = 0; bits; c++)
+ bits &= bits - 1;
+ return c;
+}
+
// most significant on-bit - return highest location of on-bit
uint8_t biton(uint8_t bits)
{