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io/unix.h
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- intrinsics/args.c intrinsics/bit_intrinsics.c \
- intrinsics/cshift0.c intrinsics/eoshift0.c \
+ intrinsics/args.c intrinsics/cshift0.c intrinsics/eoshift0.c \
intrinsics/eoshift2.c intrinsics/erfc_scaled.c \
intrinsics/extends_type_of.c intrinsics/fnum.c \
intrinsics/ierrno.c intrinsics/ishftc.c \
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+++ /dev/null
-/* Implementation of the bit intrinsics not implemented as GCC builtins.
- Copyright (C) 2009-2016 Free Software Foundation, Inc.
-
-This file is part of the GNU Fortran runtime library (libgfortran).
-
-Libgfortran is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public
-License as published by the Free Software Foundation; either
-version 3 of the License, or (at your option) any later version.
-
-Libgfortran 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 General Public License for more details.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
-<http://www.gnu.org/licenses/>. */
-
-#include "libgfortran.h"
-
-
-#ifdef HAVE_GFC_INTEGER_16
-extern int clz128 (GFC_INTEGER_16);
-export_proto(clz128);
-
-int
-clz128 (GFC_INTEGER_16 x)
-{
- int res = 127;
-
- // We can't write 0xFFFFFFFFFFFFFFFF0000000000000000, so we work around it
- if (x & ((__uint128_t) 0xFFFFFFFFFFFFFFFF << 64))
- {
- res -= 64;
- x >>= 64;
- }
-
- if (x & 0xFFFFFFFF00000000)
- {
- res -= 32;
- x >>= 32;
- }
-
- if (x & 0xFFFF0000)
- {
- res -= 16;
- x >>= 16;
- }
-
- if (x & 0xFF00)
- {
- res -= 8;
- x >>= 8;
- }
-
- if (x & 0xF0)
- {
- res -= 4;
- x >>= 4;
- }
-
- if (x & 0xC)
- {
- res -= 2;
- x >>= 2;
- }
-
- if (x & 0x2)
- {
- res -= 1;
- x >>= 1;
- }
-
- return res;
-}
-#endif
-
-
-#ifdef HAVE_GFC_INTEGER_16
-extern int ctz128 (GFC_INTEGER_16);
-export_proto(ctz128);
-
-int
-ctz128 (GFC_INTEGER_16 x)
-{
- int res = 0;
-
- if ((x & 0xFFFFFFFFFFFFFFFF) == 0)
- {
- res += 64;
- x >>= 64;
- }
-
- if ((x & 0xFFFFFFFF) == 0)
- {
- res += 32;
- x >>= 32;
- }
-
- if ((x & 0xFFFF) == 0)
- {
- res += 16;
- x >>= 16;
- }
-
- if ((x & 0xFF) == 0)
- {
- res += 8;
- x >>= 8;
- }
-
- if ((x & 0xF) == 0)
- {
- res += 4;
- x >>= 4;
- }
-
- if ((x & 0x3) == 0)
- {
- res += 2;
- x >>= 2;
- }
-
- if ((x & 0x1) == 0)
- {
- res += 1;
- x >>= 1;
- }
-
- return res;
-}
-#endif
projects / gcc.git / commitdiff