From 441c0519a07e8b86c8d079954a6b10bd31d29efc Mon Sep 17 00:00:00 2001
From: Peter Schwabe <peter@cryptojedi.org>
Date: Mon, 3 Jun 2024 09:05:02 +0200
Subject: [PATCH] Added comment description of cmov_int16

---
 ref/verify.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/ref/verify.c b/ref/verify.c
index 0fc007c4..4bcb1e5f 100644
--- a/ref/verify.c
+++ b/ref/verify.c
@@ -56,7 +56,17 @@ void cmov(uint8_t *r, const uint8_t *x, size_t len, uint8_t b)
     r[i] ^= b & (r[i] ^ x[i]);
 }
 
-
+/*************************************************
+* Name:        cmov_int16
+*
+* Description: Copy input v to *r if b is 1, don't modify *r if b is 0. 
+*              Requires b to be in {0,1};
+*              Runs in constant time.
+*
+* Arguments:   int16_t *r:       pointer to output int16_t
+*              int16_t v:        input int16_t 
+*              uint8_t b:        Condition bit; has to be in {0,1}
+**************************************************/
 void cmov_int16(int16_t *r, int16_t v, uint16_t b)
 {
   b = -b;