# HG changeset patch
# User Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
# Date 1384456598 0
# Node ID 4ac657b95f52df235c4a62e223966dee819463cf
# Parent  4d629b6bbcfdeb859228a0efe85a7f21e5ca5b18
gsm-fw: sprintf %f: handle infinities and NaNs

diff -r 4d629b6bbcfd -r 4ac657b95f52 gsm-fw/sprintf/float.c
--- a/gsm-fw/sprintf/float.c	Thu Nov 14 19:03:52 2013 +0000
+++ b/gsm-fw/sprintf/float.c	Thu Nov 14 19:16:38 2013 +0000
@@ -67,6 +67,15 @@
 	double fract, tmp;
 	char *start, *t;
 
+	/* first order of business: weed out infinities and NaNs */
+	if (isinf(number)) {
+		if (number < 0)
+			sign = '-';
+		return _sprintf_field(op, width, flags, sign, "Inf", 3, 0, 0);
+	}
+	if (isnan(number))
+		return _sprintf_field(op, width, flags, sign, "NaN", 3, 0, 0);
+	/* OK, we know it's a valid real like in the good old VAX days */
 	if (number < 0) {
 		sign = '-';
 		number = -number;