From 8c7839ef23ab75d510e627097c5cda4113447959 Mon Sep 17 00:00:00 2001
From: Lewis Van Winkle <lv@codeplea.com>
Date: Tue, 26 Jan 2016 13:37:57 -0600
Subject: [PATCH] Fixed case of NaN input to modulus.

---
 tinyexpr.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tinyexpr.c b/tinyexpr.c
index 914a950..2f828c2 100644
--- a/tinyexpr.c
+++ b/tinyexpr.c
@@ -130,7 +130,11 @@ static double add(double a, double b) {return a + b;}
 static double sub(double a, double b) {return a - b;}
 static double mul(double a, double b) {return a * b;}
 static double divide(double a, double b) {return a / b;}
-static double mod(double a, double b) {return ((long long)b) ? ((long long)a % (long long)b) : (0.0/0.0);}
+static double mod(double a, double b) {
+    if (a!=a || b!=b) return 0.0/0.0;
+    if (((long long)b) == 0) return 0.0/0.0;
+    return ((long long)a % (long long)b);
+}
 static double negate(double a) {return -a;}