From cc8e66754b1a5d0c11985cb0feb51ead49668744 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Tue, 2 Apr 2013 16:09:43 +0900
Subject: Refine ACT_LAYER and ACT_LAYER_TAP

- Remove ACT_LAYER_BITOP
---
 common/util.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'common/util.c')

diff --git a/common/util.c b/common/util.c
index ff1926d7d1..6d4d6bfda1 100644
--- a/common/util.c
+++ b/common/util.c
@@ -38,6 +38,14 @@ uint8_t bitpop16(uint16_t bits)
     return c;
 }
 
+uint8_t bitpop32(uint32_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
 // NOTE: return 0 when bit0 is on or all bits are off
 uint8_t biton(uint8_t bits)
@@ -58,3 +66,14 @@ uint8_t biton16(uint16_t bits)
     if (bits >> 1) { bits >>= 1; n += 1;}
     return n;
 }
+
+uint8_t biton32(uint32_t bits)
+{
+    uint8_t n = 0;
+    if (bits >>16) { bits >>=16; n +=16;}
+    if (bits >> 8) { bits >>= 8; n += 8;}
+    if (bits >> 4) { bits >>= 4; n += 4;}
+    if (bits >> 2) { bits >>= 2; n += 2;}
+    if (bits >> 1) { bits >>= 1; n += 1;}
+    return n;
+}
-- 
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