From 115f34a704e517ffc503355145f86e955438c7a6 Mon Sep 17 00:00:00 2001
From: lkcl <lkcl@web>
Date: Wed, 2 Oct 2019 08:31:32 +0100
Subject: [PATCH]

---
 simple_v_extension/specification/bitmanip.mdwn | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/simple_v_extension/specification/bitmanip.mdwn b/simple_v_extension/specification/bitmanip.mdwn
index 25acef469..d38b4246f 100644
--- a/simple_v_extension/specification/bitmanip.mdwn
+++ b/simple_v_extension/specification/bitmanip.mdwn
@@ -80,6 +80,15 @@ output  instruction     pseudoinstruction
 
 population-count
 
+Pseudocode:
+
+    unsigned int v; // count the number of bits set in v
+    unsigned int c; // c accumulates the total bits set in v
+    for (c = 0; v; c++)
+    {
+      v &= v - 1; // clear the least significant bit set
+    }
+
 ## ffirst - find first bit
 
 finds the first bit set as an index.
-- 
2.30.2