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| author | Richard Henderson <rth@redhat.com> | 2004-03-06 20:46:23 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@redhat.com> | 2004-03-06 20:46:23 +0000 |
| commit | a598e3fc041f38d0c43be55d1664ff7ed0cf405b (patch) | |
| tree | da22cbd1cae0cff761823248c1350f7d6ec32177 /sysdeps/alpha/soft-fp/ots_nintxq.c | |
| parent | 4df8c11d26a29bc3a6116a9125cdfdca3cd517bb (diff) | |
| download | glibc-a598e3fc041f38d0c43be55d1664ff7ed0cf405b.tar glibc-a598e3fc041f38d0c43be55d1664ff7ed0cf405b.tar.gz glibc-a598e3fc041f38d0c43be55d1664ff7ed0cf405b.tar.bz2 glibc-a598e3fc041f38d0c43be55d1664ff7ed0cf405b.zip | |
* soft-fp/quad.h (union _FP_UNION_Q): Add longs structure. * sysdeps/alpha/Implies: Add alpha/soft-fp. * sysdeps/alpha/soft-fp/sfp-machine.h: Rewrite for GEM interface. * sysdeps/alpha/Subdirs, sysdeps/alpha/soft-fp/Makefile, sysdeps/alpha/soft-fp/Versions, sysdeps/alpha/soft-fp/local-soft-fp.h, sysdeps/alpha/soft-fp/ots_add.c, sysdeps/alpha/soft-fp/ots_cmp.c, sysdeps/alpha/soft-fp/ots_cmpe.c, sysdeps/alpha/soft-fp/ots_cvtqux.c, sysdeps/alpha/soft-fp/ots_cvtqx.c, sysdeps/alpha/soft-fp/ots_cvttx.c, sysdeps/alpha/soft-fp/ots_cvtxq.c, sysdeps/alpha/soft-fp/ots_cvtxt.c, sysdeps/alpha/soft-fp/ots_div.c, sysdeps/alpha/soft-fp/ots_mul.c, sysdeps/alpha/soft-fp/ots_nintxq.c, sysdeps/alpha/soft-fp/ots_sub.c: New files.
2004-03-06 Richard Henderson <rth@redhat.com>
* soft-fp/quad.h (union _FP_UNION_Q): Add longs structure.
* sysdeps/alpha/Implies: Add alpha/soft-fp.
* sysdeps/alpha/soft-fp/sfp-machine.h: Rewrite for GEM interface.
* sysdeps/alpha/Subdirs, sysdeps/alpha/soft-fp/Makefile,
sysdeps/alpha/soft-fp/Versions, sysdeps/alpha/soft-fp/local-soft-fp.h,
sysdeps/alpha/soft-fp/ots_add.c, sysdeps/alpha/soft-fp/ots_cmp.c,
sysdeps/alpha/soft-fp/ots_cmpe.c, sysdeps/alpha/soft-fp/ots_cvtqux.c,
sysdeps/alpha/soft-fp/ots_cvtqx.c, sysdeps/alpha/soft-fp/ots_cvttx.c,
sysdeps/alpha/soft-fp/ots_cvtxq.c, sysdeps/alpha/soft-fp/ots_cvtxt.c,
sysdeps/alpha/soft-fp/ots_div.c, sysdeps/alpha/soft-fp/ots_mul.c,
sysdeps/alpha/soft-fp/ots_nintxq.c, sysdeps/alpha/soft-fp/ots_sub.c:
New files.
Diffstat (limited to 'sysdeps/alpha/soft-fp/ots_nintxq.c')
| -rw-r--r-- | sysdeps/alpha/soft-fp/ots_nintxq.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/alpha/soft-fp/ots_nintxq.c b/sysdeps/alpha/soft-fp/ots_nintxq.c new file mode 100644 index 0000000000..2cb1ca4c2a --- /dev/null +++ b/sysdeps/alpha/soft-fp/ots_nintxq.c @@ -0,0 +1,50 @@ +/* Software floating-point emulation: convert to fortran nearest. + Copyright (C) 1997,1999,2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson (rth@cygnus.com) and + Jakub Jelinek (jj@ultra.linux.cz). + + 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 "local-soft-fp.h" + +long +_OtsNintXQ (long al, long ah, long _round) +{ + FP_DECL_EX; + FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C); + long r, s; + + /* If bit 3 is set, then integer overflow detection is requested. */ + s = _round & 8 ? 1 : -1; + _round = _round & 3; + + FP_INIT_ROUNDMODE; + FP_UNPACK_Q(A, a); + + /* Build 0.5 * sign(A) */ + B_e = _FP_EXPBIAS_Q; + __FP_FRAC_SET_2 (B, _FP_IMPLBIT_Q, 0); + B_s = A_s; + _FP_UNPACK_CANONICAL(Q,2,B); + + FP_ADD_Q(C, A, B); + FP_TO_INT_Q(r, C, 64, s); + if (s > 0 && (_fex &= FP_EX_INVALID)) + FP_HANDLE_EXCEPTIONS; + + return r; +} |