-#include <float.h>
+#include <features.h>
-#if LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
/* shared by acosl, asinl and atan2l */
#define pio2_hi __pio2_hi
#define pio2_lo __pio2_lo
-extern const long double pio2_hi, pio2_lo;
+hidden extern const long double pio2_hi, pio2_lo;
-long double __invtrigl_R(long double z);
-#endif
+hidden long double __invtrigl_R(long double z);