From ba15caa3be3ecfabde5bfda65d5a6b7ef2cea313 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexander=20Bostr=C3=B6m?= <abo@kth.se>
Date: Mon, 20 Jan 2014 13:25:55 -0700
Subject: [PATCH] Add mp_isneg()

This function originally came from Heimdal's bundled copy of libtommath.

Signed-off-by: Ken Dreyer <ktdreyer@ktdreyer.com>
---
 tommath.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tommath.h b/tommath.h
index 055a4e0..50eff6e 100644
--- a/tommath.h
+++ b/tommath.h
@@ -221,6 +221,7 @@ int mp_init_size(mp_int *a, int size);
 #define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
 #define mp_iseven(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO)
 #define mp_isodd(a)  (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO)
+#define mp_isneg(a)  (((a)->sign) ? MP_YES : MP_NO)
 
 /* set to zero */
 void mp_zero(mp_int *a);