X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fisnanf-nolibm.h;h=dc43863a6986a6e4245b68d2b48ab04695e4e414;hb=a3232e87aa43983f16befedc0b6311ac02aceacb;hp=774942c728e2499f9c63afd7ec67c55e1c9c0531;hpb=f2bbde92e487b8446ff201767c430306450220be;p=gnulib.git

diff --git a/lib/isnanf-nolibm.h b/lib/isnanf-nolibm.h
index 774942c72..dc43863a6 100644
--- a/lib/isnanf-nolibm.h
+++ b/lib/isnanf-nolibm.h
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -24,6 +24,13 @@
 # elif defined isnan
 #  undef isnanf
 #  define isnanf(x) isnan ((float)(x))
+# else
+   /* Get declaration of isnanf(), if not declared in <math.h>.  */
+#  if defined __sgi
+   /* We can't include <ieeefp.h>, because it conflicts with our definition of
+      isnand.  Therefore declare isnanf separately.  */
+extern int isnanf (float x);
+#  endif
 # endif
 #else
 /* Test whether X is a NaN.  */