X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fmath.in.h;h=0625777acc169d3b7be4646bd0c3cb3b07cb54db;hb=d4cecf1ee37f6b611ef092c9c7fa3761d02ce2c3;hp=74fca3a5e4ac7b4ded6eb0d00ca755e0d2258424;hpb=d6d7a9dc245badda81a34e336dda7baaeee78322;p=gnulib.git

diff --git a/lib/math.in.h b/lib/math.in.h
index 74fca3a5e..0625777ac 100644
--- a/lib/math.in.h
+++ b/lib/math.in.h
@@ -1133,6 +1133,20 @@ _GL_WARN_ON_USE (ilogb, "ilogb is unportable - "
 # endif
 #endif
 
+#if @GNULIB_ILOGBL@
+# if !@HAVE_ILOGBL@
+_GL_FUNCDECL_SYS (ilogbl, int, (long double x));
+# endif
+_GL_CXXALIAS_SYS (ilogbl, int, (long double x));
+_GL_CXXALIASWARN (ilogbl);
+#elif defined GNULIB_POSIXCHECK
+# undef ilogbl
+# if HAVE_RAW_DECL_ILOGBL
+_GL_WARN_ON_USE (ilogbl, "ilogbl is unportable - "
+                 "use gnulib module ilogbl for portability");
+# endif
+#endif
+
 
 /* Return x * 2^exp.  */
 #if @GNULIB_LDEXPF@