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Diffstat (limited to 'sysdeps/powerpc/quad_float.h')
-rw-r--r-- | sysdeps/powerpc/quad_float.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/powerpc/quad_float.h b/sysdeps/powerpc/quad_float.h new file mode 100644 index 0000000000..787e8d9ab9 --- /dev/null +++ b/sysdeps/powerpc/quad_float.h @@ -0,0 +1,44 @@ +/* Internal libc stuff for 128-bit IEEE FP emulation routines. + 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. */ + +#ifndef _QUAD_FLOAT_H +#define _QUAD_FLOAT_H 1 + +#include <fenv_libc.h> + +/* Returns the number of leading zero bits in 'x' (between 0 and 32 + inclusive). 'x' is treated as being 32 bits long. */ +#define cntlzw(x) \ + ({ unsigned p = (x); \ + unsigned r; \ + asm ("cntlzw %0,%1" : "=r"(r) : "r"(p)); \ + r; }) + +/* Returns the number of leading zero bits in 'x' (between 0 and 64 + inclusive). 'x' is treated as being 64 bits long. */ +#define cntlzd(x) \ + ({ unsigned long long q = (x); \ + unsigned int c1, c2; \ + c1 = cntlzw(q >> 32); \ + c2 = cntlzw(q); \ + c1 + (-(c1 >> 5) & c2); }) + +#define shift_and_or + +#endif /* quad_float.h */ |