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author | Ulrich Drepper <drepper@redhat.com> | 1999-12-29 18:11:48 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-12-29 18:11:48 +0000 |
commit | d876f5327985eac3bf3109e9429febc8a8954ff5 (patch) | |
tree | 2ab0233054876a59507ff2ef9652ef81b1317991 /soft-fp/sysdeps/sparc/sparc64/qp_qtod.c | |
parent | dbbbaf53352501384c57512e2251c9d7169388af (diff) | |
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Update.
1999-12-29 Ulrich Drepper <drepper@cygnus.com>
* soft-fp/*: Tons of new files to implement floating-point arithmetic
in software.
Contributed by Richard Henderson, Jakub Jelinek and others.
Diffstat (limited to 'soft-fp/sysdeps/sparc/sparc64/qp_qtod.c')
-rw-r--r-- | soft-fp/sysdeps/sparc/sparc64/qp_qtod.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/soft-fp/sysdeps/sparc/sparc64/qp_qtod.c b/soft-fp/sysdeps/sparc/sparc64/qp_qtod.c new file mode 100644 index 0000000000..50c44026e1 --- /dev/null +++ b/soft-fp/sysdeps/sparc/sparc64/qp_qtod.c @@ -0,0 +1,49 @@ +/* Software floating-point emulation. + Return (double)(*a) + Copyright (C) 1997,1999 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 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. */ + +#include "soft-fp.h" +#include "double.h" +#include "quad.h" + +double _Qp_qtod(const long double *a) +{ + FP_DECL_EX; + FP_DECL_Q(A); + FP_DECL_D(R); + double r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_QP(A, a); +#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q + FP_CONV(D,Q,2,4,R,A); +#else + FP_CONV(D,Q,1,2,R,A); +#endif + FP_PACK_D(r, R); + QP_HANDLE_EXCEPTIONS(__asm ( + "ldd [%1], %%f52 + ldd [%1+8], %%f54 + fqtod %%f52, %0 + " : "=&e" (r) : "r" (a) : QP_CLOBBER)); + + return r; +} |