Fix clang warning by using fabs to compare floats

jenshnielsen · jenshnielsen · commit 941406e545c9 · 2016-03-07T20:19:25.000Z
diff --git a/src/_image_resample.h b/src/_image_resample.h
@@ -908,8 +908,8 @@ void resample(
 
     if (params.interpolation != NEAREST &&
         params.is_affine &&
-        abs(params.affine.sx) == 1.0 &&
-        abs(params.affine.sy) == 1.0 &&
+        fabs(params.affine.sx) == 1.0 &&
+        fabs(params.affine.sy) == 1.0 &&
         params.affine.shx == 0.0 &&
         params.affine.shy == 0.0) {
         params.interpolation = NEAREST;
