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| author | Ulrich Drepper <drepper@redhat.com> | 2008-04-10 14:15:27 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2008-04-10 14:15:27 +0000 |
| commit | 1ee82cfa183ca87f5820174b59bc774100f177f3 (patch) | |
| tree | e94054ec3819b787d4c0b659dc4fd553f53105b7 | |
| parent | 117df5d9efd27f92fd139963f1a6033e59f3f6a9 (diff) | |
| download | glibc-1ee82cfa183ca87f5820174b59bc774100f177f3.tar.gz glibc-1ee82cfa183ca87f5820174b59bc774100f177f3.tar.xz glibc-1ee82cfa183ca87f5820174b59bc774100f177f3.zip | |
isnan implementation for ppc32.
| -rw-r--r-- | sysdeps/powerpc/powerpc32/fpu/s_isnan.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_isnan.S b/sysdeps/powerpc/powerpc32/fpu/s_isnan.S new file mode 100644 index 0000000000..6e3f396de9 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/fpu/s_isnan.S @@ -0,0 +1,56 @@ +/* isnan(). PowerPC32 version. + Copyright (C) 2008 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> + +/* int __isnan(x) */ + .machine power4 +EALIGN (__isnan, 4, 0) + mffs fp0 + mtfsb0 4*cr6+lt /* reset_fpscr_bit (FPSCR_VE) */ + fcmpu cr7,fp1,fp1 + mtfsf 255,fp0 + li r3,0 + beqlr+ cr7 /* (x == x) then not a NAN */ + li r3,1 /* else must be a NAN */ + blr + END (__isnan) + +hidden_def (__isnan) +weak_alias (__isnan, isnan) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__isnan, __isnanf) +hidden_def (__isnanf) +weak_alias (__isnanf, isnanf) + +#ifdef NO_LONG_DOUBLE +strong_alias (__isnan, __isnanl) +weak_alias (__isnan, isnanl) +#endif + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); +compat_symbol (libc, isnan, isnanl, GLIBC_2_0); +# endif +#endif + |