1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/powerpc/fpu/s_copysign.S b/sysdeps/powerpc/fpu/s_copysign.S
new file mode 100644
index 0000000000..0f27fef809
--- /dev/null
+++ b/sysdeps/powerpc/fpu/s_copysign.S
@@ -0,0 +1,50 @@
+/* Copy a sign bit between floating-point values.
+   Copyright (C) 1997, 1999 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.  */
+
+/* This has been coded in assembler because GCC makes such a mess of it
+   when it's coded in C.  */
+
+#include <sysdep.h>
+
+ENTRY(__copysign)
+/* double [f1] copysign (double [f1] x, double [f2] y);
+   copysign(x,y) returns a value with the magnitude of x and
+   with the sign bit of y.  */
+	stwu	1,-16(1)
+	stfd	2,8(1)
+	lwz	3,8(1)
+	cmpwi   3,0
+	addi    1,1,16
+	blt     0f
+	fabs    1,1
+	blr
+0:	fnabs   1,1
+	blr
+	END (__copysign)
+
+weak_alias(__copysign,copysign)
+
+/* It turns out that it's safe to use this code even for single-precision.  */
+weak_alias(__copysign,copysignf)
+strong_alias(__copysign,__copysignf)
+
+#ifdef NO_LONG_DOUBLE
+weak_alias(__copysign,copysignl)
+strong_alias(__copysign,__copysignl)
+#endif