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82 lines
2.9 KiB
82 lines
2.9 KiB
/* Machine-dependent software floating-point definitions. |
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Alpha kernel version. |
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Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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Contributed by Richard Henderson ([email protected]), |
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Jakub Jelinek ([email protected]) and |
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David S. Miller ([email protected]). |
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The GNU C Library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Library General Public License as |
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published by the Free Software Foundation; either version 2 of the |
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License, or (at your option) any later version. |
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The GNU C Library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Library General Public License for more details. |
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You should have received a copy of the GNU Library General Public |
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License along with the GNU C Library; see the file COPYING.LIB. If |
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not, write to the Free Software Foundation, Inc., |
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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#ifndef _SFP_MACHINE_H |
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#define _SFP_MACHINE_H |
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#define _FP_W_TYPE_SIZE 64 |
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#define _FP_W_TYPE unsigned long |
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#define _FP_WS_TYPE signed long |
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#define _FP_I_TYPE long |
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#define _FP_MUL_MEAT_S(R,X,Y) \ |
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_FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y) |
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#define _FP_MUL_MEAT_D(R,X,Y) \ |
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_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) |
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#define _FP_MUL_MEAT_Q(R,X,Y) \ |
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_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) |
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#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm) |
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#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y) |
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#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) |
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#define _FP_NANFRAC_S _FP_QNANBIT_S |
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#define _FP_NANFRAC_D _FP_QNANBIT_D |
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#define _FP_NANFRAC_Q _FP_QNANBIT_Q |
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#define _FP_NANSIGN_S 1 |
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#define _FP_NANSIGN_D 1 |
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#define _FP_NANSIGN_Q 1 |
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#define _FP_KEEPNANFRACP 1 |
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/* Alpha Architecture Handbook, 4.7.10.4 sais that |
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* we should prefer any type of NaN in Fb, then Fa. |
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*/ |
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#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ |
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do { \ |
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R##_s = Y##_s; \ |
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_FP_FRAC_COPY_##wc(R,X); \ |
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R##_c = FP_CLS_NAN; \ |
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} while (0) |
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/* Obtain the current rounding mode. */ |
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#define FP_ROUNDMODE mode |
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#define FP_RND_NEAREST (FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT) |
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#define FP_RND_ZERO (FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT) |
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#define FP_RND_PINF (FPCR_DYN_PLUS >> FPCR_DYN_SHIFT) |
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#define FP_RND_MINF (FPCR_DYN_MINUS >> FPCR_DYN_SHIFT) |
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/* Exception flags. */ |
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#define FP_EX_INVALID IEEE_TRAP_ENABLE_INV |
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#define FP_EX_OVERFLOW IEEE_TRAP_ENABLE_OVF |
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#define FP_EX_UNDERFLOW IEEE_TRAP_ENABLE_UNF |
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#define FP_EX_DIVZERO IEEE_TRAP_ENABLE_DZE |
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#define FP_EX_INEXACT IEEE_TRAP_ENABLE_INE |
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#define FP_EX_DENORM IEEE_TRAP_ENABLE_DNO |
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#define FP_DENORM_ZERO (swcr & IEEE_MAP_DMZ) |
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/* We write the results always */ |
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#define FP_INHIBIT_RESULTS 0 |
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#endif
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