--- ./source4/torture/raw/qfsinfo.c.orig	2017-03-11 19:00:43.000000000 +0100
+++ ./source4/torture/raw/qfsinfo.c	2017-03-11 19:03:24.000000000 +0100
@@ -22,7 +22,7 @@
 #include "torture/util.h"
 #include "torture/basic/proto.h"
 #include "torture/raw/proto.h"
-
+#include <math.h>
 
 static struct {
 	const char *name;
@@ -206,7 +206,7 @@
 			s2->allocation.out.sectors_per_unit *
 			s2->allocation.out.total_alloc_units *
 			s2->allocation.out.bytes_per_sector / scale;
-		if (abs(size1 - size2) > 1) {
+		if (fabs(size1 - size2) > 1) {
 			printf("Inconsistent total size in DSKATTR and ALLOCATION - size1=%.0f size2=%.0f\n", 
 			       size1, size2);
 			ret = false;
@@ -228,7 +228,7 @@
 			s2->allocation.out.sectors_per_unit *
 			s2->allocation.out.avail_alloc_units *
 			s2->allocation.out.bytes_per_sector / scale;
-		if (abs(size1 - size2) > 1) {
+		if (fabs(size1 - size2) > 1) {
 			printf("Inconsistent avail size in DSKATTR and ALLOCATION - size1=%.0f size2=%.0f\n", 
 			       size1, size2);
 			ret = false;