$NetBSD: patch-source_blender_modifiers_intern_MOD__surfacedeform.cc,v 1.1 2024/09/06 15:43:28 prlw1 Exp $

--- source/blender/modifiers/intern/MOD_surfacedeform.cc.orig	2024-06-05 11:47:57.000000000 +0000
+++ source/blender/modifiers/intern/MOD_surfacedeform.cc
@@ -782,7 +782,7 @@ BLI_INLINE SDefBindWeightData *computeBi
       corner_angle_weights[0] = bpoly->point_edgemid_angles[0] / bpoly->corner_edgemid_angles[0];
       corner_angle_weights[1] = bpoly->point_edgemid_angles[1] / bpoly->corner_edgemid_angles[1];
 
-      if (isnan(corner_angle_weights[0]) || isnan(corner_angle_weights[1])) {
+      if (std::isnan(corner_angle_weights[0]) || std::isnan(corner_angle_weights[1])) {
         freeBindData(bwdata);
         data->success = MOD_SDEF_BIND_RESULT_GENERIC_ERR;
         return nullptr;