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| author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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| committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
| commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
| tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/powerpc/powerpc64/fpu/s_copysign.S | |
| parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
| download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip | |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc64/fpu/s_copysign.S')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/powerpc64/fpu/s_copysign.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/fpu/s_copysign.S b/REORG.TODO/sysdeps/powerpc/powerpc64/fpu/s_copysign.S new file mode 100644 index 0000000000..59472816c7 --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/powerpc64/fpu/s_copysign.S @@ -0,0 +1,59 @@ +/* Copy a sign bit between floating-point values. PowerPC64 version. + Copyright (C) 1997-2017 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, see + <http://www.gnu.org/licenses/>. */ + +/* This has been coded in assembler because GCC makes such a mess of it + when it's coded in C. */ + +#include <sysdep.h> +#include <math_ldbl_opt.h> + +ENTRY(__copysign) + CALL_MCOUNT 0 +/* 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. */ + stfd fp2,-8(r1) + nop + nop + nop + ld r3,-8(r1) + cmpdi r3,0 + blt L(0) + fabs fp1,fp1 + blr +L(0): fnabs fp1,fp1 + 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 +#if IS_IN (libm) +# if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) +compat_symbol (libm, __copysign, copysignl, GLIBC_2_0) +# endif +#elif LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __copysign, copysignl, GLIBC_2_0) +#endif |