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author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/libgfortran/m4/in_unpack.m4 | |
parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
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[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/libgfortran/m4/in_unpack.m4')
-rw-r--r-- | gcc-4.8/libgfortran/m4/in_unpack.m4 | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/gcc-4.8/libgfortran/m4/in_unpack.m4 b/gcc-4.8/libgfortran/m4/in_unpack.m4 new file mode 100644 index 000000000..caeef508d --- /dev/null +++ b/gcc-4.8/libgfortran/m4/in_unpack.m4 @@ -0,0 +1,110 @@ +`/* Helper function for repacking arrays. + Copyright (C) 2003-2013 Free Software Foundation, Inc. + Contributed by Paul Brook <paul@nowt.org> + +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" +#include <stdlib.h> +#include <assert.h> +#include <string.h>' + +include(iparm.m4)dnl + +`#if defined (HAVE_'rtype_name`)' + +dnl Only the kind (ie size) is used to name the function for integers, +dnl reals and logicals. For complex, it's c4 and c8. +`void +internal_unpack_'rtype_ccode` ('rtype` * d, const 'rtype_name` * src) +{ + index_type count[GFC_MAX_DIMENSIONS]; + index_type extent[GFC_MAX_DIMENSIONS]; + index_type stride[GFC_MAX_DIMENSIONS]; + index_type stride0; + index_type dim; + index_type dsize; + 'rtype_name` * restrict dest; + int n; + + dest = d->base_addr; + if (src == dest || !src) + return; + + dim = GFC_DESCRIPTOR_RANK (d); + dsize = 1; + for (n = 0; n < dim; n++) + { + count[n] = 0; + stride[n] = GFC_DESCRIPTOR_STRIDE(d,n); + extent[n] = GFC_DESCRIPTOR_EXTENT(d,n); + if (extent[n] <= 0) + return; + + if (dsize == stride[n]) + dsize *= extent[n]; + else + dsize = 0; + } + + if (dsize != 0) + { + memcpy (dest, src, dsize * sizeof ('rtype_name`)); + return; + } + + stride0 = stride[0]; + + while (dest) + { + /* Copy the data. */ + *dest = *(src++); + /* Advance to the next element. */ + dest += stride0; + count[0]++; + /* Advance to the next source element. */ + n = 0; + while (count[n] == extent[n]) + { + /* When we get to the end of a dimension, reset it and increment + the next dimension. */ + count[n] = 0; + /* We could precalculate these products, but this is a less + frequently used path so probably not worth it. */ + dest -= stride[n] * extent[n]; + n++; + if (n == dim) + { + dest = NULL; + break; + } + else + { + count[n]++; + dest += stride[n]; + } + } + } +} + +#endif +' |