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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
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parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
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+/* Copy a sign bit between floating-point values.
+ IBM extended format long double version.
+ Copyright (C) 2006 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+#include <math_ldbl_opt.h>
+
+ENTRY(__copysignl)
+/* long double [f1,f2] copysign (long double [f1,f2] x, long double [f3,f4] y);
+ copysign(x,y) returns a value with the magnitude of x and
+ with the sign bit of y. */
+ stwu r1,-16(r1)
+ cfi_adjust_cfa_offset (16)
+ stfd fp3,8(r1)
+ fmr fp0,fp1
+ fabs fp1,fp1
+ fcmpu cr7,fp0,fp1
+ lwz r3,8(r1)
+ cmpwi cr6,r3,0
+ addi r1,r1,16
+ cfi_adjust_cfa_offset (-16)
+ beq cr7,L(0)
+ fneg fp2,fp2
+L(0): bgelr cr6
+ fneg fp1,fp1
+ fneg fp2,fp2
+ blr
+END (__copysignl)
+
+#ifdef IS_IN_libm
+long_double_symbol (libm, __copysignl, copysignl)
+#else
+long_double_symbol (libc, __copysignl, copysignl)
+#endif