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-rw-r--r--lib/isnanf-nolibm.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/isnanf-nolibm.h b/lib/isnanf-nolibm.h
index 5e29207..b3a280c 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) 2007-2010 Free Software Foundation, Inc.
+ Copyright (C) 2007-2015 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser 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. */