1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/powerpc/s_isnan.c b/sysdeps/powerpc/s_isnan.c
new file mode 100644
index 0000000000..34019fdbdb
--- /dev/null
+++ b/sysdeps/powerpc/s_isnan.c
@@ -0,0 +1,47 @@
+/* Return 1 if argument is a NaN, else 0.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+  
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+  
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+  
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "math.h"
+#include <fenv_libc.h>
+
+int __isnan(double x)
+{
+  fenv_t savedstate;
+  int result;
+  savedstate = fegetenv_register();
+  reset_fpscr_bit(FPSCR_VE);
+  result = !(x == x);
+  fesetenv_register(savedstate);
+  return result;
+}
+weak_alias (__isnan, isnan)
+/* It turns out that the 'double' version will also always work for
+   single-precision.  Use explicit assembler to stop gcc complaining
+   that 'isnanf' takes a float parameter, not double.  */
+asm ("\
+        .globl __isnanf
+        .globl isnanf
+        .weak isnanf
+	.set __isnanf,__isnan
+	.set isnanf,__isnan
+");
+#ifdef NO_LONG_DOUBLE
+strong_alias (__isnan, __isnanl)
+weak_alias (__isnan, isnanl)
+#endif