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-rw-r--r--sysdeps/powerpc/s_isnan.c47
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diff --git a/sysdeps/powerpc/s_isnan.c b/sysdeps/powerpc/s_isnan.c
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+/* 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