$NetBSD: patch-libstdc++-v3_include_c_global_cmath,v 1.1 2025/10/11 16:14:19 js Exp $

--- libstdc++-v3/include/c_global/cmath.orig	2016-12-01 15:02:37.000000000 +0000
+++ libstdc++-v3/include/c_global/cmath
@@ -48,6 +48,10 @@
 #ifndef _GLIBCXX_CMATH
 #define _GLIBCXX_CMATH 1
 
+#ifdef __QNX__
+#define __CORRECT_ISO_CPP_MATH_H_PROTO
+#endif
+
 // Get rid of those macros defined in <math.h> in lieu of real functions.
 #undef abs
 #undef div