From 80b42fef5f070c980584b45de7b4a84322c749a0 Mon Sep 17 00:00:00 2001
From: Marco Paland <marco@paland.com>
Date: Sat, 26 Jan 2019 15:57:10 +0100
Subject: fix(printf): fixed support of NaN

(hot) fixes #37
---
 test/test_suite.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'test')

diff --git a/test/test_suite.cpp b/test/test_suite.cpp
index 66ba5f3..2103a5b 100644
--- a/test/test_suite.cpp
+++ b/test/test_suite.cpp
@@ -31,6 +31,7 @@
 #include "catch.hpp"
 
 #include <string.h>
+#include <math.h>
 
 namespace test {
   // use functions in own test namespace to avoid stdio conflicts
@@ -1019,6 +1020,9 @@ TEST_CASE("length", "[]" ) {
 TEST_CASE("float", "[]" ) {
   char buffer[100];
 
+  test::sprintf(buffer, "%.4f", NAN);   // using the NAN macro of math.h
+  REQUIRE(!strcmp(buffer, "nan"));
+
   test::sprintf(buffer, "%.4f", 3.1415354);
   REQUIRE(!strcmp(buffer, "3.1415"));
 
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