From: Jon Beniston <jon@beniston.com>
Date: Tue, 11 Dec 2018 21:03:03 +0000 (+0000)
Subject: nano-vfprintf_float.c: Fix check if negative for nans.
X-Git-Tag: newlib-snapshot-20181231~17
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=b3692aed5e48b6107afba6aab21d03191dc80117;p=newlib-cygwin.git

nano-vfprintf_float.c: Fix check if negative for nans.
---

diff --git a/newlib/libc/stdio/nano-vfprintf_float.c b/newlib/libc/stdio/nano-vfprintf_float.c
index 071a09edc..524f67a31 100644
--- a/newlib/libc/stdio/nano-vfprintf_float.c
+++ b/newlib/libc/stdio/nano-vfprintf_float.c
@@ -39,6 +39,7 @@
 #include <string.h>
 #include <limits.h>
 #include <stdint.h>
+#include <math.h>
 #include <wchar.h>
 #include <sys/lock.h>
 #include <stdarg.h>
@@ -213,7 +214,7 @@ _printf_float (struct _reent *data,
     }
   if (isnan (_fpvalue))
     {
-      if (_fpvalue < 0)
+      if (signbit (_fpvalue))
 	pdata->l_buf[0] = '-';
       if (code <= 'G')		/* 'A', 'E', 'F', or 'G'.  */
 	cp = "NAN";