int vasprintf(char **ptr, const char *format, va_list ap);
#endif
-#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+#if !defined(HAVE_VSNPRINTF) && !defined(HAVE_C99_VSNPRINTF)
int vsnprintf (char *str, size_t count, const char *fmt, va_list args);
#endif
-#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+#if !defined(HAVE_SNPRINTF) && !defined(HAVE_C99_VSNPRINTF)
int snprintf(char *str,size_t count,const char *fmt,...);
#endif