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Definitions for IEEE Double Precision Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson (rth@cygnus.com), Jakub Jelinek (jj@ultra.linux.cz), David S. Miller (davem@redhat.com) and Peter Maydell (pmaydell@chiark.greenend.org.uk). 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. */ #ifndef __MATH_EMU_DOUBLE_H__ #define __MATH_EMU_DOUBLE_H__ #if _FP_W_TYPE_SIZE < 32 #error "Here's a nickel kid. Go buy yourself a real computer." #endif #if _FP_W_TYPE_SIZE < 64 #define _FP_FRACTBITS_D (2 * _FP_W_TYPE_SIZE) #else #define _FP_FRACTBITS_D _FP_W_TYPE_SIZE #endif #define _FP_FRACBITS_D 53 #define _FP_FRACXBITS_D (_FP_FRACTBITS_D - _FP_FRACBITS_D) #define _FP_WFRACBITS_D (_FP_WORKBITS + _FP_FRACBITS_D) #define _FP_WFRACXBITS_D (_FP_FRACTBITS_D - _FP_WFRACBITS_D) #define _FP_EXPBITS_D 11 #define _FP_EXPBIAS_D 1023 #define _FP_EXPMAX_D 2047 #define _FP_QNANBIT_D \ ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE) #define _FP_IMPLBIT_D \ ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE) #define _FP_OVERFLOW_D \ ((_FP_W_TYPE)1 << _FP_WFRACBITS_D % _FP_W_TYPE_SIZE) #if _FP_W_TYPE_SIZE < 64 union _FP_UNION_D { double flt; struct { #if __BYTE_ORDER == __BIG_ENDIAN unsigned sign : 1; unsigned exp : _FP_EXPBITS_D; unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; unsigned frac0 : _FP_W_TYPE_SIZE; #else unsigned frac0 : _FP_W_TYPE_SIZE; unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; unsigned exp : _FP_EXPBITS_D; unsigned sign : 1; #endif } bits __attribute__((packed)); }; #define FP_DECL_D(X) _FP_DECL(2,X) #define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_2(D,X,val) #define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_2_P(D,X,val) #define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_2(D,val,X) #define FP_PACK_RAW_DP(val,X) \ do { \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_2_P(D,val,X); \ } while (0) #define FP_UNPACK_D(X,val) \ do { \ _FP_UNPACK_RAW_2(D,X,val); \ _FP_UNPACK_CANONICAL(D,2,X); \ } while (0) #define FP_UNPACK_DP(X,val) \ do { \ _FP_UNPACK_RAW_2_P(D,X,val); \ _FP_UNPACK_CANONICAL(D,2,X); \ } while (0) #define FP_PACK_D(val,X) \ do { \ _FP_PACK_CANONICAL(D,2,X); \ _FP_PACK_RAW_2(D,val,X); \ } while (0) #define FP_PACK_DP(val,X) \ do { \ _FP_PACK_CANONICAL(D,2,X); \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_2_P(D,val,X); \ } while (0) #define FP_ISSIGNAN_D(X) _FP_ISSIGNAN(D,2,X) #define FP_NEG_D(R,X) _FP_NEG(D,2,R,X) #define FP_ADD_D(R,X,Y) _FP_ADD(D,2,R,X,Y) #define FP_SUB_D(R,X,Y) _FP_SUB(D,2,R,X,Y) #define FP_MUL_D(R,X,Y) _FP_MUL(D,2,R,X,Y) #define FP_DIV_D(R,X,Y) _FP_DIV(D,2,R,X,Y) #define FP_SQRT_D(R,X) _FP_SQRT(D,2,R,X) #define _FP_SQRT_MEAT_D(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q) #define FP_CMP_D(r,X,Y,un) _FP_CMP(D,2,r,X,Y,un) #define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,2,r,X,Y) #define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,2,r,X,rsz,rsg) #define FP_TO_INT_ROUND_D(r,X,rsz,rsg) _FP_TO_INT_ROUND(D,2,r,X,rsz,rsg) #define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,2,X,r,rs,rt) #define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_2(X) #define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_2(X) #else union _FP_UNION_D { double flt; struct { #if __BYTE_ORDER == __BIG_ENDIAN unsigned sign : 1; unsigned exp : _FP_EXPBITS_D; unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); #else unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); unsigned exp : _FP_EXPBITS_D; unsigned sign : 1; #endif } bits __attribute__((packed)); }; #define FP_DECL_D(X) _FP_DECL(1,X) #define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_1(D,X,val) #define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_1_P(D,X,val) #define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_1(D,val,X) #define FP_PACK_RAW_DP(val,X) \ do { \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_1_P(D,val,X); \ } while (0) #define FP_UNPACK_D(X,val) \ do { \ _FP_UNPACK_RAW_1(D,X,val); \ _FP_UNPACK_CANONICAL(D,1,X); \ } while (0) #define FP_UNPACK_DP(X,val) \ do { \ _FP_UNPACK_RAW_1_P(D,X,val); \ _FP_UNPACK_CANONICAL(D,1,X); \ } while (0) #define FP_PACK_D(val,X) \ do { \ _FP_PACK_CANONICAL(D,1,X); \ _FP_PACK_RAW_1(D,val,X); \ } while (0) #define FP_PACK_DP(val,X) \ do { \ _FP_PACK_CANONICAL(D,1,X); \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_1_P(D,val,X); \ } while (0) #define FP_ISSIGNAN_D(X) _FP_ISSIGNAN(D,1,X) #define FP_NEG_D(R,X) _FP_NEG(D,1,R,X) #define FP_ADD_D(R,X,Y) _FP_ADD(D,1,R,X,Y) #define FP_SUB_D(R,X,Y) _FP_SUB(D,1,R,X,Y) #define FP_MUL_D(R,X,Y) _FP_MUL(D,1,R,X,Y) #define FP_DIV_D(R,X,Y) _FP_DIV(D,1,R,X,Y) #define FP_SQRT_D(R,X) _FP_SQRT(D,1,R,X) #define _FP_SQRT_MEAT_D(R,S,T,X,Q) _FP_SQRT_MEAT_1(R,S,T,X,Q) /* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by the target machine. */ #define FP_CMP_D(r,X,Y,un) _FP_CMP(D,1,r,X,Y,un) #define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,1,r,X,Y) #define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,1,r,X,rsz,rsg) #define FP_TO_INT_ROUND_D(r,X,rsz,rsg) _FP_TO_INT_ROUND(D,1,r,X,rsz,rsg) #define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,1,X,r,rs,rt) #define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_1(X) #define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_1(X) #endif /* W_TYPE_SIZE < 64 */ #endif /* __MATH_EMU_DOUBLE_H__ */