Add a set of declarations to math.h. Since we don't actually have

implementations for these functions, we lean on GNU builtin functions
for using them, so these declarations are also conditional on using
a GNU compiler.

diff --git a/include/math.h b/include/math.h
index a3c8d28ab21e870e854f393637152ea0b173f28d..1c3df22d400bffaa9063e45b230d11ee37f6d45f 100644 (file)
--- a/include/math.h
+++ b/include/math.h
@@ -66,9 +66,37 @@ _PROTOTYPE( int isless,         (double x, double y) );
 _PROTOTYPE( int islessequal,    (double x, double y)   );
 _PROTOTYPE( int islessgreater,  (double x, double y)   );
 _PROTOTYPE( int isunordered,    (double x, double y)   );
-_PROTOTYPE( double nearbyint,   (double x)                             );
+_PROTOTYPE( double nearbyint,   (double x)             );
 _PROTOTYPE( double remainder,   (double x, double y)   );
-_PROTOTYPE( double trunc,       (double x)                             );
+_PROTOTYPE( double trunc,       (double x)             );
+#endif
+
+/* The following definitions are not implemented in the ACK math lib.
+ * We allow them in the GNU compiler because they are builtins there.
+ */
+#ifdef __GNUC__
+_PROTOTYPE( float powf,                (float, float)          );
+_PROTOTYPE( float fmodf,       (float, float)          );
+_PROTOTYPE( double erf,                (double)                );
+_PROTOTYPE( double erfc,       (double)                );
+_PROTOTYPE( double gamma,      (double)                );
+_PROTOTYPE( double j0,         (double)                );
+_PROTOTYPE( double j1,         (double)                );
+_PROTOTYPE( double jn,         (int, double)           );
+_PROTOTYPE( double lgamma,     (double)                );
+_PROTOTYPE( double y0,         (double)                );
+_PROTOTYPE( double y1,         (double)                );
+_PROTOTYPE( double yn,         (int, double)           );
+_PROTOTYPE( double acosh,      (double)                );
+_PROTOTYPE( double asinh,      (double)                );
+_PROTOTYPE( double atanh,      (double)                );
+_PROTOTYPE( double cbrt,       (double)                );
+_PROTOTYPE( double expm1,      (double)                );
+_PROTOTYPE( int    ilogb,      (double)                );
+_PROTOTYPE( double log1p,      (double)                );
+_PROTOTYPE( double logb,       (double)                );
+_PROTOTYPE( double nextafter,  (double, double)        );
+_PROTOTYPE( double scalb,      (double, double)        );
 #endif
 
 #endif /* _MATH_H */