diff --git a/lib/msun/src/math.h b/lib/msun/src/math.h
--- a/lib/msun/src/math.h
+++ b/lib/msun/src/math.h
@@ -508,6 +508,9 @@
 void		sincos(double, double *, double *);
 void		sincosf(float, float *, float *);
 void		sincosl(long double, long double *, long double *);
+#endif /* __BSD_VISIBLE */
+
+#if __ISO_C_VISIBLE >= 2023
 double		cospi(double);
 float		cospif(float);
 long double 	cospil(long double);
@@ -517,7 +520,7 @@
 double		tanpi(double);
 float		tanpif(float);
 long double	tanpil(long double);
-#endif
+#endif /* __ISO_C_VISIBLE >= 2023 */
 
 __END_DECLS