From 4ac8eaa1c968713a63cea83079bb55ec9b05a454 Mon Sep 17 00:00:00 2001
From: Recep Aslantas <info@recp.me>
Date: Wed, 26 Oct 2016 14:37:06 +0300
Subject: [PATCH] helper for get sign of integer

---
 include/cglm-util.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/cglm-util.h b/include/cglm-util.h
index 0aa0fa8..34d6207 100644
--- a/include/cglm-util.h
+++ b/include/cglm-util.h
@@ -10,6 +10,17 @@
 
 #include "cglm-common.h"
 
+/*!
+ * @brief get sign of 32 bit integer as +1 or -1
+ *
+ * @param X integer value
+ */
+CGLM_INLINE
+int
+glm_sign(int val) {
+  return ((val >> 31) - (-val >> 31));
+}
+
 CGLM_INLINE
 float
 glm_rad(float deg) {