is +Infinity, -1 if it is -Infinity. */
__MATHDECL_1 (int,__isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
+/* Return nonzero if VALUE is finite and not NaN. */
+__MATHDECL_1 (int,__finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
+
#ifdef __USE_MISC
/* Return 0 if VALUE is finite or NaN, +1 if it
is +Infinity, -1 if it is -Infinity. */
__MATHDECL_1 (int,isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
/* Return nonzero if VALUE is finite and not NaN. */
-__MATHDECLX (int,finite,, (_Mdouble_ __value), (__const__));
+__MATHDECL_1 (int,finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
/* Deal with an infinite or NaN result.
If ERROR is ERANGE, result is +Inf;
/* Return nonzero if VALUE is not a number. */
-__MATHDECLX (int,__isnan,, (_Mdouble_ __value), (__const__));
+__MATHDECL_1 (int,__isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
#if defined __USE_MISC || defined __USE_XOPEN
/* Return nonzero if VALUE is not a number. */
-__MATHDECLX (int,isnan,, (_Mdouble_ __value), (__const__));
+__MATHDECL_1 (int,isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
/* Bessel functions. */
__MATHCALL (j0,, (_Mdouble_));